Top Flite® Model Manufacturing Co. guarantees this kit to be free from defects in both material and
workmanship at the date of purchase. This warranty does not cover any component parts damaged by use
or modification. In no case shall Top Flite’s liability exceed the original cost of the purchased kit.
Further, Top Flite reserves the right to change or modify this warranty without notice.
In that Top Flite has no control over the final assembly or material used for final assembly, no liability shall be
assumed nor accepted for any damage resulting from the use by the user of the final user-assembled
product. By the act of using the user-assembled product, the user accepts all resulting liability.
If the buyer is not prepared to accept the liability associated with the use of this product, the buyer is
advised to return this kit immediately in new and unused condition to the place of purchase.
To make a warranty claim send
the defective part or item to
Hobby Services at this address:
Include a letter stating your name, return shipping address, as much contact information as possible (daytime
telephone number, fax number, e-mail address), a detailed description of the problem and a photocopy of the
purchase receipt. Upon receipt of the package the problem will be evaluated as quickly as possible.
Hobby Services
3002 N. Apollo Dr. Suite 1
Champaign IL 61822 USA
Top Flite Models Champaign, IL
Ph: (217) 398-8970, Ext. 5
Fax: (217) 398-7721
airsupport@top-flite.com
SPECIFICATIONS
Wingspan:
Wing Area: 1325 in
Weight: 22– 24 lb
Wing
Loading:
Length: 72 in [1830mm]
Radio: 6– 7 channel
Engine: 3.0–4.0 cu in [50–65cc]
86-1/2 in [2195mm]
2
[85.5 dm2]
[9.98–10.88 kg]
38– 42 oz/ft
[116–128 g /dm2]
spark ignition gas
2
READ THROUGH THIS MANUAL BEFORE STARTING CONSTRUCTION. IT CONTAINS IMPORTANT INSTRUCTIONS AND WARNINGS CONCERNING THE ASSEMBLY AND USE OF THIS MODEL.
and membership provides liability insurance coverage,
protects modelers’ rights and interests and is required
to fl y at most R/C sites.
Academy of Model Aeronautics
5151 East Memorial Drive
Muncie, IN 47302-9252
Ph. (800) 435-9262 Or via the Internet at:
Fax (765) 741-0057 http://www.modelaircraft.org
IMPORTANT!!! Two of the most important things you
can do to preserve the radio controlled aircraft hobby
are to avoid fl ying near full-scale aircraft and avoid
fl ying near or over groups of people.
IMAA
The Top Flite Giant Spitfi re Mk IX ARF is an excellent
sport-scale model and is eligible to fl y in IMAA events.
The IMAA (International Miniature Aircraft Association)
is an organization that promotes non-competitive fl ying
of giant-scale models. If you plan to attend an IMAA
2
Balance the Model Laterally. . . . . . . . . . . . . . . 26
Check the Control Directions . . . . . . . . . . . . . . 26
Set the Control Throws. . . . . . . . . . . . . . . . . . . 27
event, obtain a copy of the IMAA Safety Code by
contacting the IMAA at the address or telephone number
below, or by logging on to their web site at: www.fl y-
imaa.org/imaa/sanction.html.
IMAA
205 S. Hilldale Road
Salina, KS 67401
(913) 823-5569
SCALE COMPETITION
Though the Top Flite Giant Spitfi re Mk IX is an ARF
and may not have the same level of detail as an “allout” scratch-built competition model, it is a scale model
nonetheless and is therefore eligible to compete in the
Fun Scale class in AMA competition (we receive many
favorable reports of Top Flite ARFs in scale competition!).
In Fun Scale, the “builder of the model” rule does not
apply. To receive the fi ve points for scale documentation,
the only proof required that a full size aircraft of this type
in this paint/markings scheme did exist is a single sheet
such as a kit box cover from a plastic model, a photo, or
a profi le painting, etc. If the photo is in black and white,
other written documentation of color must be provided.
Contact the AMA for a rule book with full details.
For more information and scale details of the full-size
Spitfi re Mk IX, photo packs are available from:
Bob’s Aircraft Documentation
3114 Yukon Ave Ph: (714) 979-8058
Costa Mesa, CA 92626 Fax: (714) 979-7279
e-mail: www.bobsairdoc.com
IMPORTANT SAFETY PRECAUTIONS
PROTECT YOUR MODEL, YOURSELF & OTHERS...
FOLLOW THESE IMPORTANT SAFETY PRECAUTIONS
1. Your Giant Spitfi re Mk IX ARF should not be considered
a toy, but rather a sophisticated, working model that
functions very much like a full-size airplane. Because
of its performance capabilities, the Giant Spitfi re Mk
IX ARF, if not assembled and operated correctly, could
possibly cause injury to yourself or spectators and
damage to property.
2. You must assemble the model according to the
instructions. Do not alter or modify the model, as
doing so may result in an unsafe or unfl yable model.
In a few cases the instructions may differ slightly from
the photos. In those instances the written instructions
should be considered as correct.
3. You must take time to build straight, true and strong.
4. You must use an R/C radio system that is in good
condition, a correctly sized engine, and other components
as specifi ed in this instruction manual. All components
must be correctly installed so that the model operates
correctly on the ground and in the air. You must check
the operation of the model and all components before
every fl ight.
5. If you are not an experienced pilot or have not fl own
this type of model before, we recommend that you get
the assistance of an experienced pilot in your R/C club
for your fi rst fl ights. If you’re not a member of a club, your
local hobby shop has information about clubs in your
area whose membership includes experienced pilots.
6. While this kit has been fl ight tested to exceed normal
use, if the plane will be used for extremely high stress
fl ying, such as racing, or if an engine larger than one
in the recommended range is used, the modeler is
responsible for taking steps to reinforce the high stress
points and/or substituting hardware more suitable for
the increased stress.
7. WARNING: The cowl and landing gear covers included
in this kit are made of fi berglass, the fi bers of which may
cause eye, skin and respiratory tract irritation. Never blow
into a part to remove fi berglass dust, as the dust will
blow back into your eyes. Always wear safety goggles, a
particle mask and rubber gloves when grinding, drilling
and sanding fi berglass parts. Vacuum the parts and the
work area thoroughly after working with fi berglass parts.
We, as the kit manufacturer, provide you with a top
quality, thoroughly tested kit and instructions, but
ultimately the quality and fl yability of your fi nished
model depends on how you build it; therefore, we
cannot in any way guarantee the performance of
your completed model, and no representations are
expressed or implied as to the performance or safety
of your completed model.
REMEMBER: Take your time and follow the
instructions to end up with a well-built model that
is straight and true.
DECISIONS YOU MUST MAKE
This is a partial list of items required to fi nish the
Giant Spitfi re Mk IX ARF that may require planning
or decision making before starting to build. Order
numbers are provided in parentheses.
ENGINE RECOMMENDATIONS
When considering engines for this model, refer to the
engine size recommendations on the cover of the
manual. Spark-ignition “gas” engines are most popular
with large-scale warbirds such as this. One advantage of
a gas engine is economy – gas engines tend to consume
less fuel than a glow engine as well. Additionally, gas
3
engines deposit little exhaust residue on the model.
Among other engines, this model was test fl own with
a DLE-55 Side Exhaust, DLE-55 Rear Exhaust, and O.S. GT55 engine. All the engines provide more than
adequate power and fl y the Giant Spitfi re Mk IX ARF
in a scale-like manner.
Note: Instructions for mounting every possible engine
cannot be incorporated into this manual. Modelers using
another engine may refer to the instructions as a guide
for mounting their engine in a similar way. If using the
DLE-55 Rear Exhaust, the stock muffl er will work well
and is recommended.
The DLE-55 Side Exhaust and O.S. GT55 require the
optional JTEC muffl er.
❍ JTC-DA50WPTF Wrap Around Muffl er
(JTCG1035)
The O.S. GT55 requires a 1" [25.4mm] aluminum
standoff.
❍ OSMG8958 74003540 1" standoff
Hardware required (not included) to mount the
O.S. GT55 engine is included with the aluminum
standoffs.
Hardware required (not included) to mount the
DLE-55 engines.
❍ (4) 10-32 x 1-1/2" Socket head cap screws
❍ (4) #10 Lock washers
❍ (4) #10 Fender washers
Per the IMAA Safety Code, magneto spark-ignition
engines must have a coil-grounding switch on the aircraft
to stop the engine and prevent accidental starting, The
switch must be operated manually (without the use of
the transmitter) and accessible by the pilot and assistant.
RADIO EQUIPMENT
The radio equipment and number of channels required
to fl y the Top Flite Giant Spitfi re Mk IX ARF depends on
the capabilities of your transmitter and how the servos
will be connected.
The Giant Spitfi re Mk IX ARF requires a servo to operate
the retract air control valve, a throttle servo, two fl ap
servos, two aileron servos, two elevator servos, a
rudder servo and a tail steering servo. Servos with a
minimum of 50 oz-in [3.9kg-cm] of torque are required
for operating the elevators, rudder, ailerons and fl aps.
We recommend that metal geared servos also be used.
Standard servos may be used for the throttle and choke
(the servo operated choke is optional). A micro servo
is required to operate the retract air valve. An optional
servo operated kill switch may also be used (this is in
addition to the IMAA-required, manually operated engine
kill switch. A servo operated kill switch is only really
necessary for engines that do not reliably shut off by
closing the carburetor, but could also serve as a backup.
recommended for fl ying the Giant Spitfi re Mk IX ARF.
The battery voltage should be checked before every
fl ight to be certain it has enough “charge”.
In addition to the servos, the following items (or similar
items) are also required. The order numbers shown in
parentheses are for Futaba servos.
❍ (4) 6" Y-harness for elevator, rudder/steering,
ailerons and fl aps (FUTM4130)
❍ (2) 12" [305mm] servo extension for fl aps
(HCAM2711)
❍ (2) 24" [610mm] servo extension for ailerons
(HCAM27021)
❍ (2) Heavy Duty switch harness (FUTM4385)
❍ (2) Ernst Charge Receptacle 124 (ERNM3001)
❍ (1) HydriMax 3600mAh NiMH battery
(HCAM6333) for receiver
❍ (1) HydriMax 1600mAh NiMH battery
(HCAM6308) for engine ignition
Note: The length and quantity of servo extensions and
Y-connectors may vary depending on the brand of radio
you are using and the radio installation.
RETRACTABLE LANDING GEAR
The Top Flite Giant Spitfi re Mk IX ARF has been designed
for Robart pneumatic and electric main gear retracts.
Note: The Spitfi re Mk IX had a fi xed tail gear.
Following is the complete list of items required to install
the Robart retracts:
❍ (1) TFSPITFIRE-E Top Flite Giant Spitfi re Mk IX
electric retractable main landing gear (ROBQ1651)
❍ (1) TFSPITFIRE Top Flite Giant Spitfi re Mk IX
pneumatic main landing gear (ROBQ1650)
❍ (1) Robart #157VRX Large-Scale Deluxe
Air Control Kit – includes pressure tank, air
line tubing, variable-rate air valve, T-fi ttings
(ROBQ2305)
❍ (1 pkg.) #190 Air Line Quick Disconnects
(ROBQ2395)
Note: An air pump will also be required to pressurize
the air tank. The Robart hand pump could be used, but
is not practical because of the large capacity of the
4
air tank in this model. A small, 12V electric pump is
recommended and can be purchased at any automotive
or hardware store.
ADDITIONAL ITEMS REQUIRED
REQUIRED HARDWARE & ACCESSORIES
In addition to the items listed in the “Decisions You
Must Make” section, following is the list of hardware
and accessories required to fi nish the Top Flite Giant
Spitfi re Mk IX ARF. Order numbers are provided in
parentheses.
❍ (2) Dubro #813 1/8" Fuel Line Barb
(DUBQ0670)
❍ (1) Dubro #554 X-large Tygon Fuel Line
(DUBQ0427)
❍ (1) R/C foam rubber (1/4" [6mm] (HCAQ1000)
or ½" [13mm] (HCAQ1050)
❍ Propeller and spare propellers suitable for your
engine.
❍ (1) Painted Pilot (GPMQ9115)
ADHESIVES AND BUILDING SUPPLIES
This is the list of Adhesives and Building Supplies that
are required to fi nish the Giant Spitfi re Mk IX ARF.
❍ 1/2 oz. [15g] Thin Pro CA (GPMR6001)
❍ 1/2 oz. [15g] Medium Pro CA+ (GPMR6007)
❍ Pro 30-minute epoxy (GPMR6047)
❍ Pro 6-minute epoxy (GPMR6045)
❍ Threadlocker thread locking cement
❍ Small metal fi le
❍ Stick-on segmented lead weights (GPMQ4485)
❍ Silver solder w/fl ux (STAR2000)
❍ Hobby Heat micro torch (HCAR0755)
❍ #1 Hobby knife (RMXR6903)
❍ #11 blades (5-pack, RMXR6930)
❍ Sanding tools and sandpaper assortment (see
Easy-Touch Bar Sander section)
❍ Curved-tip canopy scissors for trimming plastic
parts (HCAR0667)
❍ DLE-55 Propeller Drill Guide (DLEQ0551)
COVERING TOOLS
❍ Top Flite MonoKote Sealing Iron (TOPR2100)
❍ Top Flite Hot Sock Iron Cover (TOPR2175)
❍ Top Flite MonoKote Trim Seal Iron (TOPR2200)
❍ Top Flite MonoKote Heat Gun (TOPR2000)
❍ Coverite 21st Century Sealing Iron (COVR2700)
❍ Coverite 21st Century Cover Sock (COVR2702)
❍ Coverite 21st Century Trim Sealing Iron
(COVR2750)
OPTIONAL SUPPLIES AND TOOLS
Here is a list of optional tools mentioned in the manual
that will help you build the Giant Spitfi re Mk IX ARF.
❍ 2 oz. [57g] spray CA activator (GPMR6035)
❍ CA applicator tips (HCAR3780)
❍ CA debonder (GPMR6039)
❍ Builder’s Triangle Set (HCAR0480)
❍ Scale Warbird Template (TOPR2187)
❍ 36" metal ruler (HCAR0475)
❍ Hobbico High Precision Diagonal Cutter 5"
(HCAR0630)
❍ Pliers with wire cutter (HCAR0625)
❍ Robart Super Stand II (ROBP1402)
❍ Switch & Charge Jack Mounting Set
(GPMM1000)
❍ Panel Line Pen (TOPQ2510)
❍ Rotary tool such as Dremel
❍ Rotary tool reinforced cut-off wheel
●Anytime a sheet metal screw is installed in wood,
fi rst install the screw, remove the screw and apply a
couple of drops of thin CA in the hole to harden the
threads. After the CA has cured, reinstall the screw.
●Photos and sketches are placed before the step
they refer to. Frequently you can study photos in
following steps to get another view of the same parts.
●The Giant Spitfi re Mk IX ARF is factory-covered
with Top Flite MonoKote fi lm. Should repairs ever be
required, MonoKote can be patched with additional
MonoKote purchased separately. MonoKote is
packaged in six-foot rolls, but some hobby shops also
sell it by the foot. If only a small piece of MonoKote is
needed for a minor patch, perhaps a fellow modeler
would give you some. MonoKote is applied with a
model airplane covering iron, but in an emergency
a regular iron could be used. A roll of MonoKote
includes full instructions for application. Following
are the colors used on this model and order numbers
for six foot rolls.
CubYellow (TOPQ0220)
Flat Olive Drab (TOPQ0510)
Flat Dove Gray (TOPQ0511)
Flat Tan (TOPQ0516)
True Red (TOPQ0227)
●The stabilizer and wing incidences and engine
thrust angles have been factory-built into this model.
However, some technically-minded modelers may
wish to check these measurements anyway. To view
this information visit the web site at www.top-fl ite.com
and click on “Technical Data.” Due to manufacturing
tolerances which will have little or no effect on the way
your model will fl y, please expect slight deviations
between your model and the published values.
MODEL INSPECTION
Before starting to build, take an inventory of this model
to make sure it is complete, and inspect the parts
to make sure they are of acceptable quality. If any
parts are missing or are not of acceptable quality, or if
you need assistance with assembly, contact Product Support. When reporting defective or missing parts,
use the part names exactly as they are written in the
instruction manual.
Top Flite Product Support
3002 N Apollo Drive, Suite 1
Champaign, IL 61822
Ph: (217) 398-8970, ext. 5 Fax: (217) 398-7721
E-mail: productsupport@top-fl ite.com
ORDERING REPLACEMENT PARTS
Replacement parts for the Top Flite Giant Spitfi re Mk
IX ARF are available using the order numbers in the
Replacement Parts List that follows. The fastest, most
economical service can be provided by your hobby
dealer or mail-order company. Not all parts are available
separately (an aileron cannot be purchased separately,
but is only available with the wing kit). Replacement
parts are not available from Product Support, but can
be purchased from hobby shops or mail order/Internet
order fi rms. Hardware items (screws, nuts, bolts) are
also available from these outlets.
To locate a hobby dealer, visit www.top-fl ite.com
and click on “Where to Buy”. Follow the instructions
provided on the page to locate a U.S., Canadian or
International dealer.
Parts may also be ordered directly from Hobby Services
by calling (217) 398-0007, or via facsimile at (217) 398-
7721, but full retail prices and shipping and handling
charges will apply. Illinois and Nevada residents will also
5
be charged sales tax. If ordering via fax, include a Visa®
or MasterCard® number and expiration date for payment.
Mail parts orders Hobby Services
and payments by 3002 N Apollo Drive, Suite 1
personal check to: Champaign IL 61822
Be certain to specify the order number exactly as listed
in the Replacement Parts List. Payment by credit card
or personal check only; no C.O.D.
If additional assistance is required for any reason
contact Product Support:
by e-mail at or by telephone at
productsupport@top-fl ite.com (217) 398-8970
REPLACEMENT PARTS LIST
TOPA1920......…Wing Kit
TOPA1921......…Fuselage Kit
TOPA1922......…Rudder
TOPA1923......…Horizontal Stabilizer Set
TOPA1924......…Canopy
TOPA1925......…Tail Cover
TOPA1926......…Gear Door Set
TOPA1927......…Spinner
TOPA1928......…Decals
TOPA1929......…Cockpit Kit
TOPA1930......…Cannon Set
TOPA1931......…Cowl
COMMON ABBREVIATIONS
Stab = Horizontal Stabilizer
Fin = Vertical Stabilizer
LE = Leading Edge
TE = Trailing Edge
" = Inches
MM = millimeters
SHCS = Socket Head Cap Screw
To convert inches to millimeters, multiply inches by 25.5
Start with the left wing so the assembly matches the
photos the fi rst time through.
1. Lay a few paper towels on top of each other and cut
❏
them into small squares. These paper towel squares will
come in handy for wiping away excess epoxy throughout
the assembly process (and will save you from wasting
whole paper towels).
MOUNT THE AILERON SERVOS
1. Carefully remove the left aileron servo hatch
❏ ❏
from the wing by peeling off the masking tape holding
hatch to the wing. Use a paper towel square dampened
with naphtha lighter fl uid or similar solvent to remove
any glue left behind from the tape.
2. Install the rubber bushings and metal grommets
❏ ❏
in the aileron servo. Install a servo arm on the aileron
servo. Position the aileron servo on the aileron servo
hatch cover as shown. Set the two 9/16" x 3/4" x 3/8"
[15 x 20 x 8mm] hardwood blocks over the embossed
servo block locations to check that the block locations
are correct. If not, mark the new locations.
3. Use 6-minute epoxy to glue the two blocks to
❏ ❏
the bottom of the servo hatch over the embossed servo
block locations. Thoroughly coat the end of the blocks
and allow them to set for a few seconds to allow the
blocks to absorb the epoxy, then recoat the blocks. Use
clamps to hold the blocks to the servo hatch.
4. Once the epoxy has cured, remove the clamps.
❏ ❏
Place a 1/16" [1.6mm] spacer, such as a piece of
cardstock from the header card of the servo extension
or a piece of paper folded several time, under the servo
and between each mounting block. After the servo is
installed the spacer will be removed, providing adequate
spacing for vibration isolation.
2. If necessary, use a covering iron with a covering
❏
sock to go over the wing, fl ap and aileron to remove
any wrinkles. The best method to remove the wrinkles
is to glide the iron over the covering until the wrinkles
disappear, then go over the area again, pushing down on
the iron to bond the covering to the wood. If the wrinkles
don’t disappear, the balsa in that area might be fl exing
inward. If this is happening, don’t press down. Simply let
the heat of the iron shrink the covering. If the wrinkles
momentarily disappear, then immediately reappear, the
iron may be too hot, thus causing air bubbles. Lower
the temperature of the iron or use a sharp #11 blade
to puncture several holes in the covering, then reheat.
The suggested iron temperature is around 360˚ F.
When mounting the servo blocks on the bottom of the
servo hatch, make sure that the grain of the wood is
perpendicular to the hatch.
To increase the strength of the glue joint, use a T-pin
to prick holes into the gluing surface of the servo
blocks and the plywood servo hatch. Be careful not
to prick holes completely through the servo hatch
and covering.
7
5. Drill 1/16" [1.6mm] holes through the blocks
❏ ❏
for the servo mounting screws. Mount the servo to
the blocks with the screws that came with the servo.
Remove the servo mounting screws and apply a couple
of drops of thin CA in each hole to harden the threads.
Allow the CA to fully harden. Then, reinstall the servos
and remove the spacer.
6. Drill 1/16" [1.6mm] holes through the blocks at
❏ ❏
the two hole locations on the top of the hatch. Install
two #2 x 3/8" [9.5mm] fl at head sheet metal screws to
secure the servo mounting blocks to the aileron servo
hatch. Use thin CA to harden the screw threads
7. Connect a 24" [610mm] servo extension wire
❏ ❏
(not included) to the aileron servo. Cut a piece of the
included heat shrink tubing in half and slide it over the
servo connections. Shrink the tubing by applying heat.
8. Use the string in the wing to pull the aileron
❏ ❏
wire through the wing.
INSTALL THE FLAP SERVOS
1. Install the fl ap servos following the same
❏ ❏
procedure used to install the aileron servos. Note that
the fl ap servos face the same direction.
2. Connect a 12" [304mm] servo extension wire to
❏ ❏
the fl ap servo. Secure the extension to the servo with
a piece of heat shrink or electrical tape.
the 4-40 metal clevis, threaded 12 turns onto a 4-40
x 12" [304mm] metal pushrod. Attach the clevis to the
aileron servo arm 5/8" [16mm] from the center of the arm.
2. Position the control horn so that it is in line with
❏ ❏
the pushrod and over the plywood mounting plate. The
pushrod holes in the control horn should be aligned
with the hinge line of the aileron. On the aileron, mark
the four mounting holes. Remove the control horn and
drill a 5/64" [2mm] pilot hole at each mark. Do not drill
completely through the aileron. Attach the control horn
using four #4 x ½" sheet metal screws. Use thin CA to
harden the holes.
9. Place the aileron servo hatch with the servo
❏ ❏
in the wing. Be certain that the hatch is positioned
correctly as shown. Secure the hatch using four #2 x
3/8" [9.5mm] sheet metal screws and #2 fl at washers.
Use thin CA to harden the screw threads.
10. Go back to step 1 and install the right aileron servo
❏
following the same procedure. Firmly pull on the ailerons
and fl aps to check that the hinges are securely glued.
3. Route the fl ap and aileron servo leads to the
❏ ❏
root of the wing and out the hole in the top of the wing.
INSTALL THE AILERON AND FLAP PUSHRODS
Do the left aileron fi rst.
1. Slide a silicone clevis retainer over a 4-40
❏ ❏
threaded metal clevis. Thread a 4-40 nut followed by
8
3. Install the metal solder clevis in the hole at the
❏ ❏
end of the control horn. Center the aileron servo and
aileron. Mark the pushrod where it meets the solder
clevis. Remove the pushrod and the solder clevis and
cut the pushrod ¼" [6.4mm] past the mark. Solder
the solder clevis to the pushrod using the techniques
described in the following Hot Tip.
HOW TO SOLDER
1. Roughen the end of the pushrod with coarse
sandpaper where it is to be soldered. Use denatured
alcohol or other solvent to thoroughly clean the
pushrod.
2. Apply a few drops of soldering fl ux to the end of
the pushrod, then use a soldering iron or a torch
to heat it. “Tin” the heated area with silver solder
by applying the solder to the end. The heat of the
pushrod should melt the solder – not the fl ame of
the torch or soldering iron – thus allowing the solder
to fl ow. The end of the wire should be coated with
solder all the way around.
3. Place the clevis on the end of the pushrod. Add
another drop of fl ux, then heat and add solder. The
same as before, the heat of the parts being soldered
should melt the solder, thus allowing it to fl ow. Allow
the joint to cool naturally without disturbing. Avoid
excess blobs, but make certain the joint is thoroughly
soldered. The solder should be shiny, not rough. If
necessary, reheat the joint and allow to cool.
4. Immediately after the solder has solidifi ed, but
while it is still hot, use a cloth to quickly wipe off
the fl ux before it hardens. Important: After the joint
cools, coat the joint with oil to prevent rust. Note: Do
not use the acid fl ux that comes with silver solder for
electrical soldering.
4. Slide a silicone clevis retainer over the solder
❏ ❏
clevis. Reinstall the aileron pushrod with the threaded
clevis attached to the control horn. Adjust the threaded
clevis so that the aileron is centered. Apply a drop of
thread locker to the threads of the pushrod behind the
clevis. Tighten the 4-40 nut against the clevis.
MOUNT THE RETRACTS
Install the left retract fi rst.
1. Trim the axle that is included with the Robart
❏ ❏
retracts to 1-3/4" [44mm] long. File a fl at spot at the
end of the axle. Insert the axle through the included 5"
[127mm] wheel. Insert the axle into the retract. Apply
a drop of threadlocker to the 10-32 x 3/16" [4.8mm]
set screw, included with the retract, and tighten the
set screw onto the fl at of the axle. Make sure that the
wheel rotates freely.
This is what a properly soldered clevis looks
like – shiny solder with good flow, no blobs and
flux removed.
5. Assemble and connect the fl ap pushrods
❏ ❏
following the same procedure, except, adjust the fl ap
control on your transmitter to the fl ap up position. Position
the fl aps in the up position. We installed the pushrod
in the outer hole of the control horn and the hole 5/8"
[16mm] from the center of the servo arm. Use #4 x ½"
sheet metal screws in the forward holes and #4 x 3/8"
sheet metal screws in the aft holes.
6. Return to step 1 and install the aileron and fl ap
❏
pushrods on the right wing.
9
2. Test fi t the retract unit with the wheel into the
❏ ❏
wing. Position the retract so the wheel is centered in
the wheel well. Adjust the strut position in the retract
body as necessary to achieve the correct spacing all
the way around the wheel.
3. Temporarily attach the retract to the wing with
❏ ❏
two 6-32 x ¾" [19mm] machine screws. Extend the
retract. View the wheel from directly above. Adjust
the strut so that the wheel is parallel to the root of the
wing. Lock the strut in position by applying a drop of
threadlocker to the threads and securely tightening the
bolt at the top of the strut.
4. Double check that the wheel will fully retract into
❏ ❏
the wing. Extend the retract to make sure it does not
interfere with any part of the wing and that the retract
is operating smoothly.
6. Route the pressure tubing through the ribs and
❏ ❏
out the hole in the top of the wing. Tape the pressure
tubing to the top of the wing.
9. Mount the retract cover to the wing with fi ve #2
❏ ❏
x 3/8" sheet metal screws and fi ve #2 fl at washers. Use
thin CA to harden the holes.
10. Cut out the landing gear cover template from
❏ ❏
the back of the instruction manual. Tape the template to
the top of the left landing gear cover. Center the landing
gear cover over the retract. Check that the two marks
are aligned with the mounting holes on the retracts.
5. Cut a 12" [305mm] piece of red pressure tubing
❏ ❏
and a 14" [356mm] piece of purple pressure tubing from
the tubing included with the Robart Air Control Kit (not
included). Connect the red tube to the side of the air
cylinder and the purple to the end of the air cylinder.
7. Secure the retracts in the wing. Apply a drop
❏ ❏
of threadlocker to the threads of four 6-32 x ¾" [19mm]
machine screws and #6 lock washers before threading
them into the retract plate.
8. Set the retract cover over the retract and drill
❏ ❏
a 1/16" [1.6mm] pilot hole using the holes in the cover
as a guide.
10
11. Drill 1/16" [1.6mm] pilot holes at the two
❏ ❏
locations shown on the template. Enlarge the holes
with a 5/32 [4mm] drill bit. Secure the landing gear
cover to the retract with two 6-32 x 1/4" machine screws
and #6 fl at washers. Note that clear plastic shims have
been provided to raise the landing gear cover so that it
is fl ush with the bottom of the wing if needed.
12. Return to step 1 and mount the right retract in
❏
the right wing.
JOIN THE WING
Note: Keep the retracts in the retracted (up) position so
they do not extend and retract as you handle the wing.
1. Use 6-minute epoxy to glue the two 5/16 x 1-5/8"
❏
[8 x 41mm] wing alignment dowels into the root of the
left wing half.
3. Test fi t the hardwood wing joiner in each wing
❏
half, making sure that both wing halves fi t together at
the root without any gaps. Trial fi t clamping the wing
together with rubber bands around the wing dowels
at the leading edge. Insert the two ¼ - 20 x 2" [51mm]
nylon wing bolts and stretch rubber bands around the
wing bolts on the top and bottom of the wing.
4. Read through the next three steps before
❏
mixing any epoxy. Gather everything required for gluing
the wing together including 30-minute epoxy, mixing
sticks, epoxy brushes, 12" [305mm] long dowel or wire,
denatured alcohol and paper towels. Remove the rubber
bands and separate the wing halves. Remove the wing
joiner. Mix 2 oz. [59.1cc] of 30-minute epoxy. Working
quickly, pour a generous amount into the joiner pocket
of one wing half. Use your wire or dowel to thoroughly
distribute the epoxy, coating all surfaces inside the joiner
pocket. Coat the root rib and one half of the wing joiner
that goes into the wing. Insert the joiner in the wing.
the wing dowels and wing bolts. Add several strips of
masking tape to tightly hold the wings together as you
continue to wipe off excess epoxy as it squeezes out.
Be certain the leading edge and trailing edges of the
wing accurately align. Do not disturb the wing until the
epoxy has fully cured.
7. Join the matching air lines from each wing half
❏
with a couple of T-fi ttings that came with the air control
kit. Cut two 10" [250mm] pieces of corresponding color
air line (also from the control kit) and fi t each line to the
T-fi ttings. Connect one quick-connector with an O-ring
to one of the air lines and one of the quick connectors
without an O-ring to the other line. This will prevent
improper connection to the quick-connectors on the air
valve when mounting the wing to the fuselage.
8. Connect both servo wires from the aileron servos
❏
to a Y-harness and both servo wires from the fl ap servos
to a Y-harness.
2. Use 6-minute epoxy to glue the two 3/8 x 1-3/4" [9.5
❏
x 44mm] diameter forward wing dowels in the leading
edge of both wing halves. The wing dowels should
protrude approximately 5/8" [16mm] from the wing.
5. Coat the joiner pocket of the other wing half and
❏
the other end of the wing joiner. Join the wing halves
together. Then, stand the wing on end with one of the
wing tips resting on the fl oor. Use a piece of R/C foam
or something similar to cushion and stabilize the wing
so it won’t slide around.
6. With the wing resting on end, use a paper towel
❏
dampened with denatured alcohol to wipe off any excess
epoxy as it squeezes out. Wrap the rubber bands around
11
ASSEMBLE THE FUSELAGE
Firmly pull on the elevators to check that the hinges
are securely glued.
INSTALL THE STABILIZER
1. Test fi t the two aluminum stabilizer tubes in the
❏
fuselage and slide the stabilizers on the tubes. The
shorter tube goes in the front hole. If the aluminum tubes
are too tight to slide through the holes, take a sharp
hobby knife and gently scrape the inside of the holes.
During the manufacturing process a small amount of
resin or fi ller may be left behind in the hole.
and the fuselage. Insert the end of the aluminum tubes
with epoxy on them into the stabilizer and press the
stabilizer against the fuselage. Wipe off any excess
epoxy that may have squeezed out before it runs down
the fuselage. Quickly repeat the process on the other
side. Wipe off any excess epoxy with a dampened paper
towel and denatured alcohol. Use pieces of masking
tape to hold the stabilizer tight against the fuselage
until the epoxy cures.
5. Again without glue, test fi t the rudder to the fi n.
❏
Move it left and right a few times to align the hinges.
The rudder doesn’t have to move very far, only 1-3/4"
[44mm] left and 1-3/4" [44mm] right measured at the
widest part of the rudder at the trailing edge. If there
is too much resistance, or if you are not able to move
the rudder left and right 1-3/4" [44mm], widen the gap
slightly between the rudder and fi n.
2. Once you are satisfi ed with the fi t of the stabilizer
❏
halves, remove the stabilizer halves and the joiner tubes.
Use medium grit sandpaper to roughen up the aluminum
tubes. Clean the tubes with denatured alcohol and insert
both tubes back into the fuselage until the end exits on
the opposite side by approximately 1" [25mm].
3. Gather everything required for gluing the stabilizer
❏
halves to the fuselage including 30-minute epoxy, mixing
sticks, epoxy brush, 12" [304mm] long dowel or wire,
masking tape, denatured alcohol and small paper towel
squares. Mix up 3/4 oz. [22.1cc] of 30-minute epoxy.
Apply a generous amount of epoxy to the long side of
the aluminum joiner tubes. Pull the tubes through the
fuselage so that they are close to centered. Pour a small
amount of epoxy into both holes of one of the stabilizer
halves and using a dowel or wire, coat the inside of
the holes. Apply epoxy to the root rib of the stabilizer
4. Without using any glue, install four hinges into
❏
the rudder. Note that the pivot point of each hinge
must align with the center of the leading edge of the
rudder. To achieve this alignment, the hinges will be
fairly deep in the rudder. Also note that the hinges must
be perpendicular to the leading edge.
12
6. Remove the rudder and all the hinges. Add a
❏
small drop of oil to the pivot point on the hinges. This
will prevent the epoxy from adhering to the pivot point.
Make sure oil does not get on the gluing surface of the
hinge. If it does, clean the oil off with a paper towel
dampened with denatured alcohol.
7. Please read the complete instructions in this step
❏
before mixing up the epoxy. Mix up approximately ¼ oz.
[7.4cc] of 30-minute epoxy. Use a toothpick to thoroughly
apply the epoxy in the holes in the fi n and rudder. Use
the toothpick to get the epoxy out of the opening of the
holes in the rudder and fi n so it doesn’t get into the
pivot point. Wipe away any excess epoxy around the
outside of the holes with a paper towel dampened with
denatured alcohol.
Use the toothpick to apply epoxy to the ends of the
rudder hinges that go into the fi n. Insert each hinge into
the fi n and wipe away any excess epoxy that squeezes
out of the hole.
Apply epoxy to the other end of the hinges. Join the
rudder to the fi n, pushing the hinges only about ¾ of
the way into the rudder. Use a toothpick to wipe away
any epoxy that squeezes out. Then, fi t the rudder the
rest of the way on.
Move the rudder left and right a few times to align the
hinges and make certain that the rudder defl ects left
and right enough. Allow the epoxy to cure, checking it
a couple of times while it cures.
Once the epoxy has cured, fi rmly pull on the rudder to
check that the hinges are securely glued.
INSTALL THE ELEVATOR & RUDDER SERVOS
1. Insert the three 4-40 x 48" [1220mm] metal
❏
pushrods in the elevator and rudder pushrod outer
pushrod tubes at the aft end of the fuselage. Install
two elevator and one rudder servo in the servo tray as
shown. The elevator pushrods will be attached to the
servo arm in the hole 7/16" [11mm] from the center of
the arm. The rudder pushrod will be attached to the servo
arm in the hole 5/8" [16mm] from the center of the arm.
2. Thread a 4-40 nut, threaded clevis and a silicone
❏
clevis retainer 12 turns onto both elevator pushrods
and the rudder pushrod.
3. Mount the control horns to the elevators and the
❏
rudder the same way they were mounted on the ailerons,
by drilling 3/32" [2.4mm] pilot holes and using #4 x ½"
[13mm] sheet metal screws. Don’t forget to harden the
holes with thin CA after fi rst installing, then removing
the screws.
4. Connect the receiver battery, rudder and elevator
❏
servos to the receiver. Switch on the transmitter and
center the servos.
5. Install solder clevises on the elevator servo arms
❏
in the hole 7/16" [11mm] from the center of the servo
arm. Install a solder clevis on the rudder servo arm in
the hole 5/8" [16mm] from the center of the servo arm.
Following the same procedure that was done for the
aileron pushrods, mark the elevator and rudder pushrods
where they are to be cut for the solder clevises. One at a
time, remove the threaded metal clevis from the control
horn end, remove the pushrod from the fuselage, cut
it to the correct length and solder a metal solder clevis
on the end. Reinstall the pushrod from the front and
connect the solder clevis to the servo arms. Reinstall
and connect the threaded metal clevis and 4-40 nut to
the control horn. Don’t forget to use a silicone clevis
retainer on all the clevises.
MOUNT THE FIXED TAIL GEAR
1. Slide a 3.5mm wheel collar on the tail gear wire.
❏
Apply a drop of threadlocker to the threads of a 2.5 x
4mm machine screw. Secure the wheel collar on the
fl at spot with the machine screw.
13
2. Slide the tail gear wire into the fi xed tail gear frame.
❏
Secure the tail gear wire in the frame with a second
3.5mm wheel collar and 2.5 x 4mm machine screw. Be
sure to use threadlocker on all the screws.
3. Use a 5/64" [2mm] drill bit to enlarge the two holes
❏
in the nylon steering arm. Thread a 2-56 ball link ball in
both holes of the steering arm. Secure each ball with a
2-56 nut and a drop of threadlocker.
5. Cut the .018 x 84" [.45 x 2100mm] braided cable
❏
in half. Slide a small copper tube (called a swage) over
one end of both braided cables, then guide the end of
the cable back through.
6. Wrap the cable back around the swage and back
❏
through the swage.
8. Now pull on the long end of the cable to reduce the
❏
size of the fi rst loop. Slip the loop over one of the ball
link balls on the steering arm. Tighten the loop until it is
small enough to remain secure on the ball, yet may still
be pried off. Squeeze the swage with pliers. Connect
the other cable to the other ball link ball the same way.
9. Place the tail gear in the fuselage while
❏
simultaneously guiding the pull/pull cable through the
white plastic guide tubes.
4. Install the nylon steering arm on the tail gear wire.
❏
Secure the steering arm with a 2.5 x 4mm machine
screw and a drop of threadlocker. Align the steering
arm and tail gear axle so that they are parallel.
7. Use pliers to pull the cable from the fi rst loop to
❏
reduce the size of the second loop.
14
10. Use two #6 x ½" [13mm] sheet metal screws to
❏
attach the tail gear to the top rail. Remove the screws
and use thin CA to harden the screw holes.
11. Drill two 3/32" [2.4mm] holes through the bottom
❏
rails for the tail gear. Mount the tail gear to the bottom rail
with two #6 x ½" [13mm] sheet metal screws. Remove
the screws and harden the screw holes with thin CA.
12. Rotate the tail gear back and forth. If the steering
❏
arm rubs on the stringers, use a hobby knife to trim
the stringer.
13. Install the tail wheel steering servo in the center
❏
of the servo tray. Remember to harden the screw holes
with thin CA. Connect the rudder servo and steering
servo to a Y-harness. Plug the Y-harness into the receiver.
14. Thread a 4-40 nut and a 4-40 metal clevis on
❏
to each of the 4-40 rigging couplers. Slide a silicone
clevis retainer over each clevis. Install the clevises on
the steering servo arm in the hole 1/2" [12.7mm] from
the center of the servo arm.
15. Center the servo arm and the tail gear. Install a
❏
swage on each cable, route the cable through the 4-40
rigging coupler and secure the cable following the same
procedure used on the tail gear. Use a pliers to crimp
the swage tightly on the cable.
15
16. The tail gear cover can be permanently installed
❏
using CA glue or with screws. If CA glue is used it will
be diffi cult to remove the cover and access the tail gear
if needed. To install the cover with screws, tape a piece
of paper to the fuselage, fl ush with the edge of the tail
gear opening. Make fi ve marks, evenly spaced, 1/8"
[3mm] from the edge.
17. Center the tail gear cover over the opening and
❏
fl ush with the aft end of the fuselage. Tape it in place.
Drill 1/16" [1.6mm] pilot holes through the cover and
the fuselage at each mark. Remove the cover and
enlarge the holes in the cover only with a 3/32" [2.4mm]
drill bit. Attach the cover to the fuselage with #2 x 3/8"
[9.5mm] sheet metal screws. Harden the screw holes
with thin CA glue.
18. Slide a 3.5mm wheel collar followed by the tail
❏
wheel and a second wheel collar on the tail gear wire.
Apply a drop of threadlocker to the threads of the 2.5
x 4mm machine screws. Secure the wheel collar on
the tail gear wire with the machine screws. Make sure
the screw in the outer wheel collar is tightened on the
fl at spot.
INSTALL THE ENGINE
1. The fi rewall has two sets of engine mounting bolt
❏
patterns embossed on it. The “+” are for the DLE-55
Rear Exhaust gas engine and the “X” are for the DA-50,
DLE-55 Side Exhaust, and O.S. GT55 gas engines. If
you are installing an engine with a different mounting
bolt pattern the fi rewall also has crosshairs embossed
on it to help locate the correct mounting location.
2. Drill a 13/64" [5mm] hole through the fi rewall at
❏
each of the appropriate locations marked with an “X”
or “+”.
3. Insert four 10-32 x 1-1/2" [38mm] socket head cap
❏
screws, #10 lock washers and #10 Fender washers (not
included) through the holes from the backside of the
fi rewall. Apply a drop of threadlocker to the threads of
each screw. Thread the engine standoffs onto the screws
and tighten them against the fi rewall. For a reference,
once the engine is installed, the front of the engine drive
washer should be approximately 6-3/4" (171mm) from
the front of the fi rewall.
4. If installing the DLE-55 Side Exhaust engine, install
❏
a 2-56 ball link ball on the throttle arm extension and
secure it with a 2-56 nylon locknut. If installing the DLE55 Rear Exhaust engine, install a 2-56 ball link ball on
the throttle arm and secure it with a 2-56 nylon locknut.
5. On the DLE-55 Side Exhaust engine, use the
❏
screw and nut supplied with the throttle arm extension.
Attach the extension to the throttle arm. Again, use
threadlocker on the threads.
16
6. Install a 2-56 ball link ball on the choke arm and
❏
secure it with a 2-56 nylon nut.
7. Temporarily install the engine inverted on the
❏
aluminum standoffs. Determine on which side of the
fuselage the throttle and choke servos need to be
installed.
9. Drill a 3/16" [4.8mm] hole at the marks on the
❏
fi rewall for the throttle and choke pushrods. You may
fi nd it easier to remove the engine before drilling the
holes. Cut two 11" [279mm] long outer pushrod tubes
from the 36" [914mm] long outer pushrod tube. Use
medium sandpaper to roughen the outer pushrod tubes.
Clean the tubes with denatured alcohol and insert the
tubes into the previously drilled holes in the fi rewall.
Route the tube through the slot in the former until it is
fl ush with the front of the fi rewall. Use thin CA to glue
the tubes to the fi rewall.
10. Apply a drop of threadlocker to the engine
❏
mounting bolts. Reinstall the engine on the standoffs
using the bolts and washers supplied with the engine.
Thread the other end ¾" [19mm] into the end of the
throttle pushrod tube. The L-bend makes it easier to
thread in.
13. Cut off the L-bend from the 2-56 x 6" [152mm]
❏
pushrod. Insert the throttle pushrod into the throttle
outer pushrod tube. Attach the ball link socket to the
ball link ball on the throttle arm.
14. To make the choke pushrod, trim approximately
❏
1/8" [3.2mm] from the end of the nylon ball socket before
threading the 2-56 x 1" [25mm] threaded rod into the
end. Also trim the threaded rod so that 3/8" [9.5mm]
of the rod remains from the white inner pushrod tube.
Trim the choke pushrod 12" [305mm] long.
8. Snap a nylon ball socket onto both pivot balls.
❏
Center the choke and throttle arms and mark the fi rewall
where the pushrods will need to pass through.
11. To make a throttle pushrod, thread a 2-56 x 1"
❏
[25mm] threaded rod approximately 3/8" [9mm] into the
end of the white inner pushrod tube. Thread a nylon ball
link socket onto the threaded rod. For the DLE engine,
trim the throttle pushrod 12-1/2" [318mm] long.
12. Make a ½" [12mm] long L-bend at the non-
❏
threaded end of the 2-56 x 6" [152mm] metal pushrod.
17
15. Make a ½" [12mm] long L-bend at the non-
❏
threaded end of the 2-56 x 6" [152mm] metal pushrod.
Thread the other end ¾" [19mm] into the end of the
choke pushrod tube. Cut off the L-bend from the 2-56 x
6" [152mm] pushrod. Insert the choke pushrod into the
choke outer pushrod tube. Attach the ball link socket to
the ball link ball on the choke arm.
16. Install the throttle and choke servos in the servo
❏
tray. Remove the screws and servos and harden the
screw holes with thin CA.
18. Plug the throttle and choke servo into the receiver.
❏
Position the throttle stick so that it is centered on the
transmitter. Adjust the throttle servo arm so that it is
centered on the throttle servo. Move the throttle arm on
the carburetor so that the throttle is open approximately
half way. Mark the throttle pushrod where it crosses the
servo arm 5/8" [16mm] from the center of the servo.
Make a 90 degree bend at the mark and secure the
throttle pushrod to the servo arm with a nylon Faslink.
where it crosses the servo arm 3/8" [9.5mm] from the
center of the servo.
21. Glue the plywood pushrod retainer to the former.
❏
INSTALL THE AIR RETRACT
CONTROLS
17. Slide a plywood pushrod retainer over the throttle
❏
and choke outer pushrod. Position the retainer against
the former but do not glue it until the pushrods have
been connected to the servos.
19. Now it should only require minor adjustments
❏
to the throttle endpoints on the transmitter so that the
throttle opens and closes completely. Be sure to also
set up a switch on your transmitter to close the throttle
completely, stopping the engine.
20. Install the servo operated choke following the
❏
same procedure. Mark and bend the choke pushrod
18
1. Install the receiver switch and charge receptacle.
❏
We installed ours on the opposite side from the throttle
servo.
2. Attach a 12" [305mm] piece of pressure tubing to
❏
the front of the retract pressure tank. Use Shoe Goo
or an RTV adhesive to glue the pressure tank in the
fuselage. Note that the front of the tank is inserted under
the throttle servo tray and then slide forward.
4. Test fi t the retract servo tray and receiver tray in
❏
the fuselage. Drill a 1/16" [1.6mm] pilot hole in throttle
servo tray, using the eight mounting holes as guides.
Attach the retract servo tray and receiver tray with #2
x 3/8" [9.5mm] sheet metal screws and #2 washers.
Remove the screws and the trays and harden the screw
holes with thin CA.
5. Install the retract control valve in the plywood mount.
❏
Install a .080 ball link ball and .080 nut on the valve. Be
sure to use a drop of threadlocker on the threads of the
ball link ball and the control valve mounting ring.
7. Wrap the receiver in foam and secure it to the
❏
servo tray with hook and loop material. To make the
strap, overlap by 1" [25mm] the hook material with the
loop material. Mount the receiver tray in the fuselage.
Install the retract control valve servo in the retract servo
tray and plug it into the receiver.
3. Glue the retract servo tray together as shown.
❏
6. Reinstall the retract servo tray in the fuselage.
❏
19
8. Glue short pieces of remaining white pushrod
❏
tubing to the former to support the antenna.
9. Cut off ½" [13mm] from the threaded end of the
❏
2-56 x 6" [152mm] metal pushrod. Thread the nylon
ball socket on the pushrod. Snap the ball socket onto
the ball link ball on the retract control valve. Center the
servo arm and mark the pushrod where it crosses the
servo arm. Make a 90 degree bend at the mark. Install
the pushrod in the servo arm and install a nylon Faslink.
Cut the pushrod 1/8" [3mm] past the Faslink.
11. Install the air fi ll valve. Connect a third air line
❏
from the fi ll valve to the T-fi tting.
12. Connect an 8" [203mm] long red and purple air
❏
line to the air control valve. Install quick connects on
the other end of the two air lines. Important: Check the
wing as to which quick connect to install on which color
air line. Use the retract instructions as a guide.
2. Wrap the ignition battery in foam rubber. Secure
❏
it to the top of the engine box with a hook and loop
strap. Connect the plug from the ignition battery to the
ignition switch. Secure the connection with a piece of
heat shrink tubing.
10. Connect a T-fi tting to the air line from the pressure
❏
tank. Connect a second air line from the retract control
valve to the T-fi tting.
INSTALL THE IGNITION SYSTEM
1. Install the ignition battery switch and charge jack
❏
towards the front of the fuselage.
20
3. Place a piece of foam rubber on the plywood
❏
ignition module tray. Do not cover up the inner four
holes. Place the ignition module on the foam rubber and
secure it with a strap made from hook and loop material.
4. Attach the ignition module tray to the aluminum
❏
engine standoffs with four nylon tie straps.
5. Connect the ignition module to the ignition
❏
switch and the engine. Use shrink tubing to secure the
connections.
ASSEMBLE AND INSTALL
THE FUEL TANK
onto the other end of the two short tubes. Bend the vent
tube and connect the pickup and fueling/defueling lines
(not included) to the short tubes. Connect the clunks to
the lines and secure the lines to the clunk and brass
tubing with the small tie straps.
2. Install the fuel tank stopper assembly in the fuel
❏
tank. Check that the clunks move around freely in the
fuel tank. Tighten the fuel tank stopper screw. Mark the
top of the fuel tank (the side the vent tube is on).
3. Position the fuel tank in the fuselage and
❏
determine how you want to run the fuel line. Drill holes
where necessary in the fi rewall for the line going to
the carburetor, the fi ll line and the vent line. Install an
aluminum fuel line plug in the fi ll line. Secure the fuel
tank in the fuselage with the rubber bands.
2. Position the receiver battery tray above the throttle
❏
servo and receiver tray. Drill four 1/16" [1.5mm] holes
into the fuselage at the four screw hole locations. Use #2
x 3/8" [9.5mm] sheet metal screws and #2 fl at washers
to mount the receiver battery tray in the fuselage. Be
sure to harden the screw holes with thin CA.
1. Assemble the fuel tank stopper assembly with the
❏
Tygon fuel tubes (not included) as shown. The easiest
way is to fi rst solder a fuel line barb (not included) onto
one end of all three tubes. Insert the tubes into the
stopper with the metal plates, and then solder a barb
INSTALL THE RECEIVER BATTERY
1. Glue the two plywood sides to the plywood receiver
❏
battery tray.
21
3. Wrap the receiver battery in R/C foam and secure
❏
it to the receiver battery tray with two hook and loop
straps. Plug the receiver battery into the radio switch
harness. Use heatshrink on the connection. Install the
receiver battery in the fuselage.
INSTALL THE COWL
1. Test fi t the cowl over the engine. The bottom of the
❏
cowl will need to be trimmed to fi t over the engine head
and the exhaust. Use the spinner to center the cowl.
5. Use 320 grit sandpaper to sand the inside of the
❏
cowl at the eight screw hole locations. Also, sand one
side of the eight aluminum discs. Clean the disc and
the inside of the cowl with denatured alcohol.
6. Use 6-minute epoxy to glue the aluminum disc to
❏
the inside of the cowl, aligned with the mounting holes.
A 4-40 x ½" [12.7mm] machine screw, #4 fl at washer
and 4-40 nut have been provided to hold the disc in
position while the epoxy cures.
2. Mark the outline of the aft air intake on the bottom
❏
of the wing. Remove the wing and use a T-pin to poke
holes inside the outline of the aft air intake.
3. Wipe off the outline. Use sandpaper to roughen
❏
the bottom of the aft air intake. Clean the area with
denatured alcohol.
4. Use epoxy to glue the aft air intake to the bottom
❏
of the wing.
2. Cut and tape pieces of paper or card stock to the
❏
side of the fuselage to mark the location of the center
of the cowl mounting blocks. Position the cowl back on
the fuselage. Mark and drill a 3/32" [2mm] pilot hole at
each location.
3. Remove the cowl and enlarge the holes in the
❏
cowl to 1/8" [3mm].
4. Secure the cowl to the fuselage with eight #4 x
❏
½" [12.5mm] sheet metal screws and #4 fl at washers.
Remove the screws and cowl. Use thin CA to harden
the screw holes.
7. After the epoxy has cured, reinstall the cowl on
❏
the fuselage.
APPLY THE FINAL DETAILS
1. Position the aft air intake behind the cowl and slide
❏
the wing into position. Bolt the wing on the fuselage.
22
5. Apply the radiator intake decal on both radiators.
❏
6. Sand the bottom of both radiators to roughen
❏
the surface. Clean the bottom of the radiators with
denatured alcohol.
7. Position the radiators on the bottom of the wing,
❏
behind the retract and perpendicular to the root of the
wing. Mark the location on the covering and use a T-pin
to poke holes in the covering, inside the marks. Glue
the radiators to the bottom of the wing with epoxy.
8. Glue the plywood rudder spacer to the back of
❏
the plastic rudder pedal. Trim the rudder pedal so that
it is fl ush with the rudder spacer. A sanding bar can
be used to sand the edges of the plastic rudder pedal
fl ush with the spacer. For additional detail, the recessed
area around the rudder pedals can be painted fl at black.
23
9. Apply the instrument panel decal to the plywood
❏
instrument panel backplate. Glue the backplate behind
the instrument panel, positioning the backplate so that
the instrument dials line-up with the openings.
10. Trim the fl oor to fi t. If the fl oor needs to be
❏
shortened, remove the excess from the aft end of the
fl oor. If you plan on installing a pilot (not included) a
scrap of wood should be glued inside the raised seat
pedestal for additional support. Remove the fl oor.
12. Trim the right cockpit side to fi t. The top of the
❏
cockpit should set on the top of the fuselage side.
13. Trial fi t all the cockpit parts in the fuselage
❏
before gluing. Insert the cockpit fl oor fi rst. Then, insert
the rudder pedal followed by the sides and fi nally the
instrument panel. Make any adjustments needed. Then
glue the parts in. Canopy glue works well. It allows time
to position the parts and wipe off any excess glue.
15. Sand the bottom center of the seat and the top
❏
of the seat pedestal. Clean the area with denatured
alcohol and glue the seat to the pedestal.
16. If you are installing a full body pilot, now is a
❏
good time to install him before the control column is
installed. Trim the control column. The handle can be
painted fl at black for a more scale appearance. Glue
the control column in the slot in the fl oor.
11. Trim the left cockpit side to fi t. The top of the
❏
cockpit should set on the top of the fuselage side.
14. Center and glue the armored head rest to the
❏
back of the cockpit.
24
17. Install the pilot bust (not included) in the cockpit.
❏
You will need to use a block to raise the pilot.
20. Wash the canopy in warm water. Then, dry it
❏
off. Place the canopy on the fuselage. Be certain it is
centered from side-to-side and mark the outline on the
fuselage. Use a T-pin to prick holes in the covering or
trim and remove the covering, just inside the outline.
Use canopy glue to attach the canopy on the fuselage.
APPLY THE DECALS
1. The decals are die-cut from the factory.
❏
2. Be certain the model is clean and free from oily
❏
fi ngerprints and dust. Prepare a dishpan or small bucket
with a mixture of liquid dish soap and warm water—about
1/2 teaspoon of soap per gallon of water. Submerse
one of the decals in the solution and peel off the paper
backing. Note: Even though the decals have a “stickyback” and are not the water transfer type, submersing
them in soap & water allows accurate positioning and
reduces air bubbles underneath.
3. Position decal on the model where desired. Holding
❏
the decal down, use a paper towel to wipe most of the
water away.
4. Use a piece of soft balsa or something similar to
❏
squeegee remaining water from under the decal. Apply
the rest of the decals the same way.
Please use the following pictures and box top as a guide
for the decal placement.
18. Insert the antenna mast into the slot in the top
❏
of the fuselage.
19. Glue the antenna mast cover to the fuselage. Do
❏
not glue the antenna mast. To prevent damage during
transportation, the antenna mast is removable.
21. Use epoxy to glue the two cannon muzzle covers
❏
on the leading edge of the wing.
22. Apply a drop of threadlocker to the threads of
❏
the cannons. Thread the cannons into the leading edge
of the wing.
25
GET THE MODEL READY TO FLY
FULL
THROTTLE
RUDDER
MOVES
RIGHT
ELEVATOR
MOVES DOWN
RIGHT AILERON
MOVES UP
LEFT AILERON
MOVES DOWN
4-CHANNEL RADIO SETUP (STANDARD MODE 2)
INSTALL THE PROPELLER
1. Carefully balance the propeller and any spare
❏
propellers. An unbalanced propeller can be the single
most signifi cant cause of vibration that can damage
the model. Not only will engine mounting bolts loosen,
possibly with disastrous effect, but vibration may also
damage the receiver and receiver batteries. Vibration
can also cause the fuel to foam, which will, in turn, cause
the engine to run hot and quit.
We use a Top Flite Precision Magnetic Prop Balancer
(TOPQ5700) in the workshop and keep a Great Planes
Fingertip Prop Balancer (GPMQ5000) in our fl ight box.
2. The included aluminum spinner was designed to
❏
be used with the DA-50, DLE-55, DLE-55 Rear Exhaust,
O.S. GT55 and GT60 gas engines. Use a drill guide
to drill the bolt holes through the propeller, slide the
spinner backplate, propeller and prop washer on the
engine prop shaft and install the prop bolts.
3. Install the spinner cone on the engine using a
❏
M5 x 100mm socket head cap screw. Use a drop of
threadlocker on the threads.
BALANCE THE MODEL LATERALLY
1. With the wing level, have an assistant help you lift
❏
the model by the engine propeller shaft and the bottom
of the fuse under the TE of the fi n. Do this several times.
2. If one wing always drops when you lift the model,
❏
it means that side is heavy. Balance the airplane by
adding weight to the other wing tip. An airplane that
has been laterally balanced will track better in loops
and other maneuvers.
CHECK THE CONTROL DIRECTIONS
1. Switch on the transmitter and receiver and center
❏
the trims. If necessary, remove the servo arms from
the servos and reposition them so they are centered.
Reinstall the screws that hold on the servo arms.
2. With the transmitter and receiver still on, check
❏
all the control surfaces to see if they are centered. If
necessary, adjust the clevises on the pushrods to center
the control surfaces.
26
3. Make certain that the control surfaces and the
❏
carburetor respond in the correct direction as shown in
the diagram. If any of the controls respond in the wrong
direction, use the servo reversing in the transmitter to
reverse the servos connected to those controls. Be
certain the control surfaces have remained centered.
Adjust if necessary.
SET THE CONTROL THROWS
To ensure a successful fi rst fl ight, set up your Giant
Spitfi re ARF according to the control throws specifi ed
in this manual. The throws have been determined
through actual fl ight testing and accurate recordkeeping, allowing the model to perform in the manner
in which it was intended. If, after you have become
accustomed to the way the Giant Spitfi re ARF fl ies,
you would like to change the throws to suit your taste,
that is fi ne. However, too much control throw could
make the model too responsive and diffi cult to control,
so remember, “more is not always better.”
1. Use a box or something similar to prop up the
❏
bottom of the fuselage so the horizontal stabilizer
and wing will be level. Hold a ruler vertically on your
workbench against the widest part (front to back) of
the trailing edge of the elevator. Note the measurement
on the ruler.
At the Servos
The pushrod farther out
means More Throw
The pushrod closer in
means Less Throw
At the Control Surfaces
The pushrod farther out
means Less Throw
The pushrod closer in
means More Throw
These are the recommended control surface throws:
HIGH RATELOW RATE
ELEVATOR
RUDDERAILERONSFLAPS
Up
7/16"
[11mm]
7°
Right
1-1/4"
[32mm]
17°
Up
1/2"
[13 mm]
10°
Down
7/16"
[11mm]
7°
Left
1-1/4"
[32mm]
17°
Down
1/2"
[13 mm]
10°
2"
[51mm]
43°
Up
9/16"
[14mm]
9°
Right
1-5/8"
[41mm]
22°
Up
7/8"
[22mm]
17°
Down
9/16"
[14mm]
9°
Left
1-5/8"
[41mm]
22°
Down
7/8"
[22mm]
17°
BALANCE THE MODEL (C.G.)
2. Measure the high rate elevator throw fi rst. Move
❏
the elevator up with your transmitter and move the ruler
forward so it will remain contacting the trailing edge.
The distance the elevator moves up from center is the
“up” elevator throw. Measure the down elevator throw
the same way.
3. If necessary, adjust the location of the pushrod
❏
on the servo arm or on the elevator horn, or program
the ATVs in your transmitter to increase or decrease
the throw according to the measurements in the control
throws chart.
4. Measure and set the low rate elevator throws and
❏
the high and low rate throws for the rest of the control
surfaces the same way.
If your radio does not have dual rates, we recommend
setting the throws at the high rate settings.
NOTE: The throws are measured at the widest part of
the elevators, rudder and ailerons.
27
More than any other factor, the C.G. (center of gravity/
balance point) can have the greatest effect on how
a model fl ies and could determine whether or not
your fi rst fl ight will be successful. If you value your
model and wish to enjoy it for many fl ights, DO NOT OVERLOOK THIS IMPORTANT PROCEDURE. A
model that is not properly balanced may be unstable
and possibly unfl yable.
At this stage the model should be in ready-to-fl y
condition with all of the components in place including
the complete radio system, engine, muffl er, propeller,
spinner and pilot. The fuel tank should be empty.
5-13/16" [147mm]
1. If using a Great Planes C.G. Machine, set the rulers
5-13/16" [147mm]
❏
to 5-13/16" [147mm]. If not using a C.G. Machine, use
a fi ne-point felt tip pen to mark lines on the top of wing
on both sides of the fuselage 5-13/16" [147mm] back
from the leading edge. Apply narrow (1/16" [2mm]) strips
of tape over the lines so you will be able to feel them
when lifting the model with your fi ngers.
This is where your model should balance for the fi rst
fl ights. Later, you may experiment by shifting the
C.G. 7/16" [10mm] forward or 7/16" [10mm] back to
change the fl ying characteristics. Moving the C.G.
forward will improve the smoothness and stability,
but the model will then be less aerobatic (which
may be fi ne for less-experienced pilots). Moving the
C.G. aft makes the model more maneuverable and
aerobatic for experienced pilots. In any case, start at the recommended balance point and do not at any
time balance the model outside the specifi ed range.
2. With the wing attached to the fuselage, all parts
❏
of the model installed (ready to fl y) and an empty fuel
tank, place the model upside-down on a Great Planes
CG Machine, or lift it upside-down at the balance point
you marked.
3. If the tail drops, the model is “tail heavy.” If the nose
❏
drops, the model is “nose heavy.” Use Great Planes
“stick-on” lead (GPMQ4485) to balance the plane. To fi nd
out how much weight is required, place incrementally
increasing amounts of weight on the bottom of the
fuselage over the location where it would be mounted
inside until the model balances. A good place to add
stick-on nose weight is to the fi rewall. Do not attach
weight to the cowl—this will cause stress on the cowl
and could cause the cowl to crack at the screw holes.
Note: The manufacturer has already installed some
weight on the fi rewall. If the plane is nose heavy, start
by removing some of the pre-installed nose weight
before adding tail weight. Once you have determined
if additional weight needs to be installed, it can be
permanently attached.
Do not rely upon the adhesive on the back of the lead
weight to permanently hold it in place. Over time, fuel,
vibration and exhaust residue may soften the adhesive
and cause the weight to fall off. Instead, permanently
attach the weight with glue or screws.
Note: It is highly recommended that with gas powered
planes the ignition system and all its components be
separated from the radio system components by at least
10"[254mm] to prevent ignition noise from interfering
with the radio system. If the plane is tail heavy, do not
move the receiver battery forward closer to the ignition
system. If the plane is nose heavy, do not move the
ignition battery aft closer to the receiver.
4. IMPORTANT: If you found it necessary to add
❏
any weight, recheck the C.G. after the weight has
been installed.
CHECK LIST
During the last few moments of preparation your mind
may be elsewhere anticipating the excitement of the
fi rst fl ight. Because of this, you may be more likely to
overlook certain checks and procedures that should
be performed before the model is fl own. To help
avoid this, a check list is provided to make sure these
important areas are not overlooked. Many are covered
in the instruction manual, so where appropriate, refer
to the manual for complete instructions. Be sure to
check the items off as they are completed (that’s why
it’s called a check list!).
1. Fuelproof all areas exposed to fuel or exhaust
❏
residue.
2. Check the C.G. according to the measurements
❏
provided in the manual.
3. Be certain the battery and receiver are securely
❏
mounted in the fuse. Simply stuffi ng them into place
with foam rubber is not suffi cient.
4. If you still fl y on 72MHz, extend your receiver
❏
antenna and make sure it has a strain relief inside the
fuselage to keep tension off the solder joint inside the
receiver.
5. Balance your model laterally as explained in the
❏
instructions.
6. Use threadlocking compound to secure critical
❏
fasteners such as the set screws that hold the wheel
axles to the struts, screws that hold the carburetor arm
(if applicable), engine bolts, etc.
7. Add a drop of oil to the axles so the wheels will
❏
turn freely.
8. Between fl ights, give the control surfaces a quick
❏
tug to make sure all hinges are securely glued in place.
28
9. Reinforce holes for wood screws with thin CA
❏
where appropriate (servo mounting screws, aileron
hatches, etc.).
10. Confi rm that all controls operate in the correct
❏
direction and the throws are set up according to the
manual. Checking the direction should be performed
before every fl ight. With computer radios it is easy to
mistakenly change the model.
11. Make sure there are silicone retainers on all the
❏
clevises and that all servo arms are secured to the
servos with the screws included with your radio.
12. Secure connections between servo wires and
❏
Y-connectors or servo extensions, and the connection
between your battery pack and the on/off switch with
vinyl tape, heat shrink tubing or special clips suitable
for that purpose.
13. Make sure any servo extension cords and air lines
❏
you may have used do not interfere with other systems
(servo arms, pushrods, etc.).
14. Make sure the fuel lines are connected and are
❏
not kinked.
15. Balance your propeller (and spare propellers).
❏
16. Check that the spinner bolt is tight.
❏
17. Place your name, address, AMA number and
❏
telephone number on or inside your model. This is an
AMA rule.
18. Cycle your receiver and ignition battery pack (if
❏
necessary) and make sure it is fully charged.
19. If you wish to photograph your model, do so
❏
before your fi rst fl ight.
20. Range check your radio when you get to the fl ying
❏
fi eld. Have and assistant hold the plane while running
the engine at different throttle settings.
PREFLIGHT
IDENTIFY YOUR MODEL
No matter if you fl y at an AMA sanctioned R/C club site
or if you fl y somewhere on your own, you should always
have your name, address, telephone number and AMA
number on or inside your model. It is required at all
AMA R/C club fl ying sites and AMA sanctioned fl ying
events. Fill out the identifi cation tag on page 33 and
place it on or inside your model.
CHARGE THE BATTERIES
Follow the battery charging instructions that came with
your radio control system to charge the batteries. You
should always charge your transmitter and receiver
batteries the night before you go fl ying, and at other
times as recommended by the radio manufacturer.
CAUTION: Unless the instructions that came with
your radio system state differently, the initial charge
on new transmitter and receiver batteries should
be done for 15 hours using the slow-charger that came with the radio system. This will “condition” the
batteries so that the next charge may be done using
the fast-charger of your choice. If the initial charge is
done with a fast-charger the batteries may not reach
their full capacity and you may be fl ying with batteries
that are only partially charged.
GROUND CHECK AND RANGE CHECK
Run the engine for a few minutes to make sure it idles
reliably, transitions smoothly and maintains full power
indefi nitely. Afterward, shut the engine off and inspect
the model closely, making sure all fasteners, pushrods
and connections have remained tight and the hinges
are secure. Always ground check the operational range
of your radio before the fi rst fl ight of the day following
the manufacturer’s instructions that came with your
radio. This should be done once with the engine off
and once with the engine running at various speeds. If
the control surfaces do not respond correctly, do not fl y! Find and correct the problem fi rst. Look for loose
servo connections or broken wires, corroded wires on
old servo connectors, poor solder joints in your battery
pack or a defective cell, or a damaged receiver crystal
from a previous crash.
ENGINE SAFETY PRECAUTIONS
Failure to follow these safety precautions may
result in severe injury to yourself and others.
29
Keep all engine fuel in a safe place, away from high
heat, sparks or fl ames, as fuel is very fl ammable. Do
not smoke near the engine or fuel; and remember that
engine exhaust gives off a great deal of deadly carbon
monoxide. Therefore do not run the engine in a closed room or garage.
Get help from an experienced pilot when learning to
operate engines.
Use safety glasses when starting or running engines.
Use a “chicken stick” or electric starter to start the
engine. If you do fl ip the propeller with your fi ngers,
wear a heavy leather glove, such as a welders glove.
When hand starting gas engines, if the engine should
backfi re, the large prop can cause severe injury to your
hand and fi ngers.
Do not run the engine in an area of loose gravel or
sand; the propeller may throw such material in your
face or eyes.
Keep your face and body as well as all spectators away
from the plane of rotation of the propeller as you start
and run the engine.
Keep these items away from the prop: loose clothing,
shirt sleeves, ties, scarfs, long hair or loose objects such
as pencils or screwdrivers that may fall out of shirt or
jacket pockets into the prop.
Stop the engine before making any engine adjustments.
The engine and muffl er get hot! Do not touch them
during or right after operation. Make sure fuel lines are
in good condition so fuel will not leak onto a hot engine,
causing a fi re.
To stop a gasoline powered engine an on/off switch
must be connected to the engine ignition. Do not throw
anything into the propeller of a running engine.
AMA SAFETY CODE
Read and abide by the following excerpts from the
Academy of Model Aeronautics Safety Code. For the
complete Safety Code refer to Model Aviation magazine,
the AMA web site or the Code that came with your
AMA license.
GENERAL
1) I will not fl y my model aircraft in sanctioned events,
air shows, or model fl ying demonstrations until it has
been proven to be airworthy by having been previously,
successfully fl ight tested.
2) I will not fl y my model aircraft higher than approximately
400 feet within 3 miles of an airport without notifying the
airport operator. I will give right-of-way and avoid fl ying
in the proximity of full-scale aircraft. Where necessary,
an observer shall be utilized to supervise fl ying to avoid
having models fl y in the proximity of full-scale aircraft.
3) Where established, I will abide by the safety rules for
the fl ying site I use, and I will not willfully and deliberately
fl y my models in a careless, reckless and/or dangerous
manner.
5) I will not fl y my model unless it is identifi ed with my
name and address or AMA number, on or in the model.
Note: This does not apply to models while being fl own
indoors.
three miles of any pre-existing fl ying site except in
accordance with the frequency sharing agreement
listed [in the complete AMA Safety Code].
9) Under no circumstances may a pilot or other person
touch a powered model in fl ight; nor should any part of
the model other than the landing gear, intentionally
touch the ground, except while landing.
Since the Giant Spitfi re ARF qualifi es as a “giant
scale’ model and is therefore eligible to fl y in IMAA
events, we’ve printed excerpts from the IMAA Safety
Code which follows.
IMAA SAFETY CODE (excerpts)
Defi nition: For the purpose of the following IMAA
Safety Code, the term Giant Scale shall refer to radio
controlled model aircraft, either scale or non-scale, which
have a wingspan of 80 inches [2032mm] or more for
monoplanes and 60 inches [1524mm] or more for multi-
winged model aircraft and have a ramp weight (fueled
and ready to fl y) of 55lbs. [24.75kg.] or less.
will also prevent accidental starting of the engine. This
switch shall be readily available to both pilot and helper.
This switch is to be operated manually and without the
use of the radio system.
5.2 Engine with battery power ignition systems must
have a switch to turn off the power from the battery
pack to disable the engine from fi ring. This will also
prevent accidental starting of the engine. This switch
shall be readily available to both pilot and helper. This
switch shall be operated manually and without the use
of the radio system.
5.3 There must also be a means to stop the engine
from the transmitter. The most common method is to
close the carburetor throat completely using throttle
trim. However, other methods are acceptable. This
requirement applies to all glow/gas ignition engines
regardless of size.
Section 6.0: Radio Requirements
6.1 All transmitters must be FCC type certifi ed.
7) I will not operate models with pyrotechnics (any device
that explodes, burns, or propels a projectile of any kind).
RADIO CONTROL
1) I will have completed a successful radio equipment
ground check before the fi rst fl ight of a new or repaired
model.
2) I will not fl y my model aircraft in the presence of
spectators until I become a qualifi ed fl ier, unless assisted
by an experienced helper.
3) At all fl ying sites a straight or curved line(s) must be
established in front of which all fl ying takes place with
the other side for spectators. Only personnel involved
with fl ying the aircraft are allowed at or in the front of
the fl ight line. Intentional fl ying behind the fl ight line is
prohibited.
4) I will operate my model using only radio control
frequencies currently allowed by the Federal
Communications Commission.
5) I will not knowingly operate my model within
Section 1.0: Safety Standard
1.1 Adherence to Code: This safety code is to be strictly
followed.
1.2 The most current AMA Safety Code in effect is to
be observed. However, the competition sections of the
code may be disregarded.
Section 3.0 Safety Check
3.4 Flight Testing: All Giant Scale R/C aircraft are to have
been fl ight tested and fl ight trimmed with a minimum of
six fl ights before the model is allowed to fl y at an IMAA
Sanctioned event.
3.5 Proof of Flight: The completing and signing of the
Declaration section of the Safety Inspection form by
the pilot (or owner) shall document as fact that each
aircraft has been successfully fl ight-tested and proven
airworthy prior to an IMAA event.
Section 5.0: Emergency Engine Shut Off (Kill Switch)
5.1 All magneto spark ignition engines must have a coil
grounding switch on the aircraft to stop the engine. This
30
6.2 FCC Technician or high-class license required for
6 meter band operation only.
Additional IMAA General Recommendations
The following recommendations are included in the
Safety Code not to police such items, but rather to offer
basic suggestions for enhanced safety.
Servos need to be of a rating capable to handle the
loads that the control surfaces impose upon the servos.
Standard servos are not recommended for control
surfaces. Servos should be rated heavy-duty. For fl ightcritical control functions a minimum of 45 inch/ounces of
torque should be considered. This should be considered
a minimum for smaller aircraft and higher torque servos
are strongly encouraged for larger aircraft. The use of
one servo for each aileron and one for each elevator
half is strongly recommended. Use of dual servos is
also recommended for larger aircraft.
On-board batteries shall be 1000 mAh up to 20 lbs.,
1200 mAh to 30 lbs., 1800 mAh to 40 lbs. and 2000
mAh over 40 lbs. fl ying weight. The number and size
of the servos, size and loads on control surfaces, and
added features should be considered as an increase
to these minimums. Batteries should be able to sustain
power to the onboard radio components for a minimum
of one hour total fl ying time before recharging.
Both redundant and fail-safe battery systems are
recommended.
There is no minimum engine displacement limit, as
it is the position of this body that an underpowered
aircraft presents a greater danger than an overpowered
aircraft. However, the selection of engine size relative
to airframe strength and power loading mandates good
discretionary judgment by the designer and builder.
Current AMA maximums for engine displacement are
6.0 cu. in. for two-stroke and 9.6 cu. in. for four-stroke
engine. These maximums apply only to AMA Sanctions
concerning competition events (such as 511, 512, 515
and 520) and, as such, the maximums apply. All IMAA
(non competition) events should be sanctioned as Class
“C” events, in which these engine size maximums do
not apply.
Generally, it is recommended that no attempt should
be made to fl y a radio controlled model aircraft with
a gasoline engine in which the model aircraft weight
would exceed twelve (12) pounds (underpowered) per
cubic inch of engine displacement, or be less than fi ve
(5) pounds (overpowered) per cubic inch of engine
displacement. Example: Using a 3 cu. in. engine, a
model would likely be underpowered at an aircraft
weight greater than 36 pounds. With the same engine,
an aircraft weighing less than 15 pounds would likely
be overpowered.
Servo arms and wheels should be rated heavy duty.
Glass-fi lled servo arms and control horns are highly
recommended.
Propeller tips should be painted or colored in a visible
and contrasting manner so as to increase the visibility
of the propeller tip arc.
FLYING
The Giant Spitfi re ARF is a great-fl ying model that fl ies
smoothly and predictably. However, it does not possess
the self-recovery characteristics of a primary R/C trainer
and should be fl own only by experienced R/C pilots.
FUEL MIXTURE ADJUSTMENTS
A fully cowled engine may run at a higher temperature
than an un-cowled engine. For this reason, the fuel
mixture should be richened so the engine runs at about
200 rpm below peak speed. By running the engine
slightly rich, you will help prevent dead-stick landings
caused by overheating.
CAUTION (THIS APPLIES TO ALL R/C AIRPLANES):
If, while fl ying, you notice an alarming or unusual
sound such as a low-pitched “buzz,” this may indicate
control surface fl utter. Flutter occurs when a control
surface (such as an aileron or elevator) or a fl ying
surface (such as a wing or stab) rapidly vibrates up
and down (thus causing the noise). In extreme cases,
if not detected immediately, fl utter can actually cause
the control surface to detach or the fl ying surface
to fail, thus causing loss of control followed by an
impending crash. The best thing to do when fl utter
is detected is to slow the model immediately by
reducing power, then land as soon as safely possible.
Identify which surface fl uttered (so the problem may
be resolved) by checking all the servo grommets
for deterioration or signs of vibration. Make certain
all pushrod linkages are secure and free of play. If
it fl uttered once, under similar circumstances it will
probably fl utter again unless the problem is fi xed.
Some things which can cause fl utter are; Excessive
hinge gap; Not mounting control horns solidly; Poor
fi t of clevis pin in horn; Side-play of wire pushrods
caused by large bends; Excessive free play in servo
gears; Insecure servo mounting; and one of the most
prevalent causes of fl utter; Flying an over-powered
model at excessive speeds.
TAKEOFF
Before you get ready to takeoff, see how the model
handles on the ground by doing a few practice runs at
low speeds on the runway. Hold “up” elevator to keep
the tail wheel on the ground. If necessary, adjust the tail
wheel so the model will roll straight down the runway. If
you need to calm your nerves before the maiden fl ight,
shut the engine down and bring the model back into
the pits. Top off the fuel, then check all fasteners and
control linkages for peace of mind.
Remember to takeoff directly into the wind. When you’re
ready, point the model straight down the runway, hold
a bit of up elevator to keep the tail on the ground to
maintain tail wheel steering, then gradually advance
the throttle. As the model gains speed, decrease up
elevator allowing the tail to come off the ground. One
of the most important things to remember with a tail
dragger is to always be ready to apply right rudder to
counteract engine torque. Gain as much speed as your
runway and fl ying site will practically allow before gently
applying up elevator, lifting the model into the air. At
this moment it is likely that you will need to apply more
right rudder to counteract engine torque. Be smooth
on the elevator stick, allowing the model to establish a
gentle climb to a safe altitude before turning into the
traffi c pattern.
We normally fl y our fi rst fl ight with the landing gear down.
If for some reason the plane has to be landed quickly,
for example a dead stick landing, we can concentrate
on the landing.
31
FLIGHT
For reassurance and to keep an eye on other traffi c, it
is a good idea to have an assistant on the fl ight line
with you. Tell him to remind you to throttle back once the
plane gets to a comfortable altitude. While full throttle
is usually desirable for takeoff, most models fl y more
smoothly at reduced speeds.
Take it easy with the Giant Spitfi re ARF for the fi rst few
fl ights, gradually getting acquainted with it as you gain
confi dence. Adjust the trims to maintain straight and
level fl ight. After fl ying around for a while, and while still
at a safe altitude with plenty of fuel, practice slow fl ight
and execute practice landing approaches by reducing
the throttle and lowering the fl aps to see how the model
handles at slower speeds. Add power to see how it
climbs as well. Continue to fl y around, executing various
maneuvers and making mental notes (or having your
assistant write them down) of what trim or C.G. changes
may be required to fi ne tune the model so it fl ies the way
you like. Mind your fuel level, but use this fi rst fl ight to
become familiar with your model before landing.
LANDING
One of the keys to landing a giant-scale model is to
maintain suffi cient airspeed throughout the landing
approach. An unusually high airspeed is not necessary,
Identification Tag
but those unfamiliar with landing giant-scale models are
sometimes deceived by the model’s larger size. Larger
models often appear to be closer than they actually are.
Additionally, most giant-scale models slow down rapidly,
thus causing the uninitiated to land short. To avoid this
initial illusion, make your landing pattern closer than you
normally might for a .40-size sport model. Also, don’t
pull the throttle all the way back and leave it there the
way you normally would. Instead, momentarily pull the
throttle all the way back, but then advance it a “click” or
two to keep the engine RPM up and maintain airspeed.
Once over the runway you can cut the throttle the rest
of the way and the model will slow for the landing fl are.
The Giant Spitfi re ARF may be landed with or without
fl aps. Flaps increase lift and drag, so the plane may be
landed slower, thus reducing rollout after touchdown
(not as much of a factor on grass runways). To initiate
a landing approach, lower the throttle while on the
downwind leg. If using fl aps, allow the model to slow
before extending them. Continue to lose altitude, but
maintain airspeed by keeping the nose down as you
turn onto the crosswind leg. Make your fi nal turn toward
the runway (into the wind) keeping the nose down to
maintain airspeed and control. If using fl aps, keep a few
additional “clicks” of power so the model doesn’t slow
too much. Level the attitude when the model reaches the
runway threshold, modulating the throttle as necessary
to maintain your glide path and airspeed. If you are going
to overshoot, smoothly advance the throttle (always
ready on the right rudder to counteract torque) and
retract the fl aps when enough airspeed is gained. Climb
out to make another attempt. When the model is a foot
or so off the deck, smoothly increase up elevator until it
gently touches down. Once the model is on the runway
and has lost fl ying speed, hold up elevator to place the
tail on the ground, regaining tail wheel control.
Note: If ever the occasion arises when a dead-stick
landing must be performed, do not extend the fl aps until
certain the model will be able to reach the landing zone
(on dead-stick landings it is common to land with no fl aps
at all). Without engine power, fl aps can unexpectedly
reduce the model’s range, thus causing you to come
up short of the fi eld.
One fi nal note about fl ying your Giant Spitfi re ARF. Have
a goal or fl ight plan in mind for every fl ight. This can be
learning a new maneuver(s), improving a maneuver(s)
you already know, or learning how the model behaves
in certain conditions (such as on high or low rates).
This is not necessarily to improve your skills (though
it is never a bad idea!), but more importantly so you
do not surprise yourself by impulsively attempting a
maneuver and suddenly fi nding that you’ve run out of
time, altitude or airspeed. Every maneuver should be
deliberate, not impulsive. For example, if you’re going to
do a loop, check your altitude, mind the wind direction
(anticipating rudder corrections that will be required to
maintain heading), remember to throttle back at the top,
and make certain you are on the desired rates (high/
low rates). A fl ight plan greatly reduces the chances of
crashing your model just because of poor planning and
impulsive moves. Remember to think.
Have a ball! But always stay in control
and fl y in a safe manner.
GOOD LUCK AND GREAT FLYING!
Name
Address
City, State, Zip
This model belongs to:
AMA Number
Phone Number
32
Right Retract Cover
Left Retract Cover
33
34
notes:
35
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