Top Flite Models Champaign, IL
Ph: (217) 398-8970, Ext. 5
Fax: (217) 398-7721
airsupport@top-flite.com
INSTRUCTION
MANUAL
WARRANTY
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.
READ THROUGH THIS MANUAL BEFORE STARTING CONSTRUCTION. IT CONTAINS IMPORTANT INSTRUCTIONS AND WARNINGS CONCERNING THE ASSEMBLY AND USE OF THIS MODEL.
Entire Contents © 2012 Hobbico, Inc. TOPA1025 Mnl
Hobby Services
3002 N. Apollo Dr. Suite 1
Champaign IL 61822 USA
Technical Assistance Call
(217) 398-8970
productsupport@top-flite.com
SPECIFICATIONS
Wingspan:
Wing Area: 329 sq in [ 21.2 dm
Weight:
Wing
Loading:
Length:
Radio: 4 channel
Motor: RimFire .10
36 in [915mm]
27– 30 oz [765 – 850 g]
11.8 – 13.1 oz/sq ft
[36– 40 g/dm
34.5 in [875mm]
2
]
2
]
TABLE OF CONTENTS
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Academy of Model Aeronautics . . . . . . . . . . . . 2
SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . 2
DECISIONS YOU MUST MAKE . . . . . . . . . . . . . . . 3
Power Recommendations . . . . . . . . . . . . . . . . 3
Radio Equipment . . . . . . . . . . . . . . . . . . . . . . . 3
Charger Recommendations. . . . . . . . . . . . . . . 3
ADDITIONAL ITEMS REQUIRED . . . . . . . . . . . . . 3
Adhesives and Building Supplies. . . . . . . . . . . 3
Covering Tools . . . . . . . . . . . . . . . . . . . . . . . . . 3
Optional Supplies and Tools. . . . . . . . . . . . . . . 3
IMPORTANT BUILDING NOTES. . . . . . . . . . . . . . 3
MODEL INSPECTION . . . . . . . . . . . . . . . . . . . . . . 4
ORDERING REPLACEMENT PARTS
CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
ASSEMBLE THE WING . . . . . . . . . . . . . . . . . . . . . 5
Mount the Aileron Servos. . . . . . . . . . . . . . . . . 5
Install the Main Landing Gear . . . . . . . . . . . . . 6
ASSEMBLE THE FUSELAGE . . . . . . . . . . . . . . . . 6
Install the Stabilizer . . . . . . . . . . . . . . . . . . . . . 6
Install the Servos . . . . . . . . . . . . . . . . . . . . . . . 7
Install the Nose Gear . . . . . . . . . . . . . . . . . . . . 8
. . . . . . . . . . 4
INTRODUCTION
The original Top Flite Contender kit was introduced over
forty years ago. By popular demand, thirteen years ago
the Contender kit was re-introduced following today’s
high quality kit standards. With the advancements in
electric powered planes, we now bring you the new
Electric Powered Mini Contender EP ARF. With the
traditional looks of the original Contender and the quiet,
clean power of electrics, we think you will be impressed
with the performance of the Mini Contender EP ARF.
For the latest technical updates or manual corrections
to the Mini Contender EP ARF visit the Top Flite web
site at www.top-fl ite.com. Open the “Airplanes” link,
then select the Mini Contender EP ARF. If there is
new technical information or changes to this model
a “tech notice” box will appear in the upper left corner
of the page.
Install the Motor and ESC . . . . . . . . . . . . . . . . 8
Install the Cowl. . . . . . . . . . . . . . . . . . . . . . . . . 9
Apply the Decals . . . . . . . . . . . . . . . . . . . . . . 10
GET THE MODEL READY TO FLY . . . . . . . . . . . 10
Balance the Model Laterally. . . . . . . . . . . . . . 10
Check the Control Directions . . . . . . . . . . . . . 10
Set the Control Throws. . . . . . . . . . . . . . . . . . 10
Balance the Model (C.G.). . . . . . . . . . . . . . . . 11
CHECK LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
PREFLIGHT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Identify Your Model . . . . . . . . . . . . . . . . . . . . . 13
Charge the Batteries . . . . . . . . . . . . . . . . . . . 13
Ground Check and Range Check . . . . . . . . . 13
MOTOR SAFETY PRECAUTIONS . . . . . . . . . . . 13
AMA SAFETY CODE. . . . . . . . . . . . . . . . . . . . . . 13
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Radio Control. . . . . . . . . . . . . . . . . . . . . . . . . 14
FLYING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Takeoff . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Flight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Landing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
ACADEMY OF MODEL AERONAUTICS
If you are not already a member of the AMA, please
join! The AMA is the governing body of model aviation
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
Fx (765) 741-0057
Or via the Internet at: http://www.modelaircraft.org
IMPORTANT!!! Tw o 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.
SAFETY PRECAUTIONS
PROTECT YOUR MODEL, YOURSELF AND
OTHERS... FOLLOW THESE IMPORTANT
SAFETY PRECAUTIONS
1. Your Mini Contender EP 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 Mini Contender EP 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 motor, 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 model 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 a motor larger
than one that is recommended 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.
2
We, as the manufacturer, provide you with a top
quality, thoroughly tested ARF 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
Mini Contender EP ARF that may require planning
or decision making before starting to build. Order
numbers are provided in parentheses.
POWER RECOMMENDATIONS
The plane has been designed to use the RimFire .10,
Silver Series SS-25 ESC, APC 9x6E prop and 11.1V
1800mAh to 2200mAh LiPo battery.
❍ (1) RimFire™ .10 (GPMG4595)
❍ (1) Silver Series SS-25 (GPMM1820)
❍ (1) APC 9 6E propeller (APCQ4118)
❍ (1) Great Planes® Power Series LiPo 1800mAh
11.1V 25C discharge w/balance plug (GPMP0515)
❍ (1) ElectriFly® Plug-and-Play LiPo 1800mAh 11.1V
30C discharge w/balance plug (GPMP0855)
❍ (1) ElectriFly Plug-and-Play LiPo 2200mAh 11.1V
30C discharge w/balance plug (GPMP0861)
RADIO EQUIPMENT
The Mini Contender EP ARF requires a 4-channel
radio with four Micro Servos with at least 21oz-in.
[1.5kg-cm] of torque.
❍ (4) Futaba® S3114 Micro High Torque Servo
(FUTM0414)
❍ (1) 6" [152mm] Y-harness for ailerons
(FUTM4130)
❍ (4) 6" [152mm] Servo extension (FUTM4506)
CHARGER RECOMMENDATIONS
❍ Great Planes PolyCharge4™ DC 4 Output LiPo
Charger (GPMM3015)
❍ Great Planes ElectriFly Triton™ JR DC
Computer Charger (GPMM3152)
When using the PolyCharge 4 or the Triton JR we highly
recommend using an Equinox™ LiPo Cell Balancer
(GPMM3160)
❍ Great Planes ElectriFly Triton EQ AC/DC
Charger (GPMM3155)
❍ Great Planes ElectriFly Triton2™ EQ AC/DC
Charger (GPMM3156)
ADDITIONAL ITEMS REQUIRED
ADHESIVES AND BUILDING SUPPLIES
This is the list of Adhesives and Building Supplies
that are required to fi nish the Mini Contender EP ARF
❍ 1/2 oz. [15g] Thin Pro™ CA (GPMR6001)
❍ Pro 6-minute epoxy (GPMR6045)
❍ Threadlocker thread locking cement
(GPMR6060)
❍ Mixing sticks (50, GPMR8055)
❍ Mixing cups (GPMR8056)
❍ Epoxy brushes (6, GPMR8060)
❍ Denatured alcohol (for epoxy clean up)
❍ Masking tape (TOPR8018)
❍ Paper Towels
❍ Drill
❍ Drill bits: 1/16" [1.6mm], #55 [1.3mm], 3/32"
[2.4mm]
❍ Stick-on segmented lead weights (GPMQ4485)
❍ #1 Hobby knife (RMXR6903)
❍ #11 blades (5-pack, RMXR6930)
❍ Phillips head screwdriver
❍ Crescent wrench
❍ 3/32", 2.5mm Hex wrench
3
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)
OPTIONAL SUPPLIES AND TOOLS
Here is a list of optional tools mentioned in the manual
that will help you build the Mini Contender EP ARF
❍ 2 oz. [57g] spray CA activator (GPMR6035)
❍ CA applicator tips (HCAR3780)
❍ CA debonder (GPMR6039)
❍ 36" metal ruler (HCAR0475)
❍ Hobbico® High Precision Diagonal Cutter 5"
(HCAR0630)
❍ Pliers with wire cutter (HCAR0625)
❍ Robart Super Stand II (ROBP1402)
❍ AccuThrow™ Defl ection Gauge (GPMR2405)
❍ CG Machine™ (GPMR2400)
❍ Precision Magnetic Prop Balancer (TOPQ5700)
❍ Williams Brothers 1/8 Pilot Bust Kit (WBRQ1090)
IMPORTANT BUILDING NOTES
● 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 Mini Contender EP 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.
White (TOPQ0204) True Red (TOPQ0227)
● The stabilizer and wing incidences and motor 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 Ph: (217) 398-8970
Champaign, IL 61822 Fx: (217) 398-7721
E-mail: airsupport@top-fl ite.com
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 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.
CONTENTS
6
5
7
1
If additional assistance is required for any reason
contact Product Support by e-mail at productsupport@
top-fl ite.com, or by telephone at (217) 398-8970.
REPLACEMENT PARTS LIST
Order No. Description
TOPA1900
TOPA1901
TOPA1902
TOPA1903
TOPA1904
TOPA1905
TOPA1906
TOPA1907
8
9
10
12
2
Wing
Fuselage
Tail Surfaces
Cowl
Canopy
Landing Gear
Decals
Spinner
11
ORDERING REPLACEMENT PARTS
Replacement parts for the Top Flite Mini Contender
EP 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.
1. Fuselage
2. Wing
3. Fin & Rudder
4. Stabilizer & Elevator
5. Decal
13
6. Cowl
7. Motor Mount
8. Compartment Cover
9. Spinner
10. Wing Bolt
4
3
14
11. Lower Fin
12. Wing Dowels
13. Hook & Loop
14. Elevator Joiner Wire
15. Wheels
15
4
20
16
19
16. Main Landing Gear
17. Nose Gear
18. Nose Gear Block
19. Steering Arm
20. Pushrods
18
17
ASSEMBLE THE WING
1. If necessary, use a covering iron with a covering
❏
sock to go over the wing 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 or T-pin to puncture several holes in the
covering, then reheat. The suggested iron temperature
is around 360 degrees F.
2. Carefully pull the string from the aileron servo
❏ ❏
opening and tie it to the end of the servo extension.
3. Pull the aileron servo lead through the wing
❏ ❏
and out of the opening on the top of the wing.
of thin CA in each screw hole. After the CA has cured,
reinstall the aileron servo and screws.
5. Install a servo arm on the aileron servo so
❏ ❏
that it is perpendicular to the centerline of the servo.
Remove the three unused arms.
6. Use a 1/16" [1.6mm] drill bit to enlarge the
❏ ❏
hole 5/16" [8mm] from the center of the servo arm.
MOUNT THE AILERON SERVOS
1. Connect a 6" [152mm] servo extension to
❏ ❏
one of the aileron servos. Secure the extension to
the servo lead with a piece of heat shrink or electrical
tape (not included).
4. Use a #55 drill bit or small T-pin to drill pilot
❏ ❏
holes for the servo mounting screws. Mount the aileron
in the wing with two #2 x 1/4" [2 x 6mm] sheet metal
screws. Remove the screws and servo. Apply a drop
5
7. Thread a nylon clevis 20 turns onto the 2-56 x
❏ ❏
4-7/16" [110mm] metal pushrod. Slide a silicone clevis
keeper over the nylon clevis.
8. Connect the nylon clevis in the enlarged hole
❏ ❏
of the servo arm.
9. Enlarge the outer hole of the nylon control horn
❏ ❏
to 5/64" [2 mm]. Insert the z-bend of the pushrod in
the outer hole of the control horn. Position the pushrod
parallel to the servo. Place the control horn on the
aileron in line with the pushrod. The four holes in the
front of the horn should be aligned with the aileron
hinge line. Install the control horn on the aileron with
two 2-56 x 3/8" [9.5 mm] machine screws and the
control horn back plate.
INSTALL THE MAIN LANDING GEAR
1. Insert the shorter L-bend of the main landing gear
❏
in the bottom of the wing. Secure the main landing
gear in the wing with four nylon landing gear straps
and eight #2 x 1/2" [12mm] sheet metal screws.
ASSEMBLE THE FUSELAGE
INSTALL THE STABILIZER
1. Remove the two elevator halves from the
❏
horizontal stabilizer. Insert the elevator joiner wire in
the two elevator halves and set the assembly on a fl at
surface. Check that both elevator halves set fl at. If they
do not, use a pliers to adjust the elevator joiner wire.
10. Go back to step 1 and install the other aileron
❏
servo following the same procedure. Connect the two
aileron servos with a Y-harness.
11. Use 6-minute epoxy to glue the 3/16" x 15/16"
❏
[5 x 24 mm] nylon wing dowels in the leading edge of
the wing.
2. Install a 1/8" [3mm] wheel collar and 4-40 x 1/8"
❏
[ 3 mm] machine screw, followed by a 1-7/16" [35 mm]
foam wheel and a second wheel collar and machine
screw. Apply a drop of threadlocker on the threads
of the screws before installing. The second machine
screw must be tightened on the fl at at the end of the
main landing gear.
6
2. Bolt the wing on the fuselage. Insert the joiner
❏
wire in the horizontal stabilizer slot followed by the
stabilizer. Insert the vertical fi n in the slot on the top
of the fuselage. Take a few steps back and view the
stabilizer from the back. The stabilizer should be parallel
with the wing. If it is not, lightly sand the stabilizer slot
until it is parallel.
3. Once you are satisfi ed with the fi t, use epoxy to
❏
glue the stabilizer and fi n in the fuselage.
4. Insert a small T-pin through the center of a CA
❏
hinge. Insert the hinge in the bottom leading edge of
the rudder.
5. Insert the CA hinge in the trailing edge of the lower
❏
fi n. Glue the lower fi n to the bottom of the fuselage
with thin CA. Remove the T-pin and apply four drops
of thin CA to each side of the CA hinge. Allow the CA
to wick in after each drop.
7. Clean the elevator joiner wire with a paper towel
❏
dampened with denatured alcohol. Apply 6-minute
epoxy in the elevator joiner wire holes of both elevator
halves. Install the elevators on the horizontal stabilizer
and apply four drops of thin CA to the top and bottom
of each CA hinge.
INSTALL THE SERVOS
1. Connect a 6" [152mm] servo extension to the
❏
rudder and elevator servos. Use heat shrink or electrical
tape to secure the connection.
center the servo arms. The rudder needs to have a two
arm servo arm for the rudder and the nose steering.
Insert the two 17-1/2" [435mm] long metal pushrods in
the rudder and elevator outer pushrod tubes. Align the
rudder and elevator servos so that the pushrods are
aligned with the holes in the servo arms 1/4" [7mm]
from the center of the servo. Secure the servos to the
servo tray with two #2 x 1/4" [2 x 6mm] sheet metal
screws.
6. Use T-pins to center six hinges in the trailing edge
❏
of the horizontal stabilizer.
2. Insert the rudder and elevator servos into the
❏
servo tray. Connect the servos to the receiver and
7
3. Install the rudder and elevator horns following the
❏
same method used to install the aileron horns.
4. Install the 1-5/8" [40mm] long metal pushrods in
❏
the elevator and rudder servo arms. Center the rudder
and elevator and secure the pushrods with four 1/8"
[ 3 mm] wheel collars and 4-40 x 1/4" [ 6 mm] socket
head cap screw. Be sure to use threadlocker on the
screw threads.
INSTALL THE NOSE GEAR
1. Apply a drop of threadlocker to the threads of
❏
two 4-40 x 3/8" [9.5mm] machine screws. Attach the
nylon nose gear block to the front of the fi rewall with
the machine screws.
2. Slide a 1/8" [3mm] wheel collar and 4-40 x 1/8"
❏
[3 mm] machine screw onto the nose gear wire. Insert
the 9-1/4" [ 230 mm] metal nose gear pushrod into
the outer pushrod in the fi rewall. Slide the nose gear
through the nose gear block. Insert the nose gear
pushrod in the nylon nose gear steering arm and then
slide the nose gear through the steering arm. Secure
the steering arm with a 3 x 6 mm socket head cap screw.
3. Attach the steering pushrod to the rudder servo
❏
using the 1-5/8" [40 mm] long metal pushrod and two
1/8" [ 3 mm] wheel collars and 4-40 x 1/4" [6mm] socket
head cap screws. Note the wheel collars are secured
sideways to clear the wing.
4. Install the foam nose wheel on the nose gear
❏
using two 1/8" [3 mm] wheel collars and 4-40 x 1/8"
[3mm] machine screws.
INSTALL THE MOTOR AND ESC
1. Hold the plywood motor mount up to the front
❏
of the fuselage. Notice that the motor mounting holes
are offset to the left. This is to account for the right
thrust. Attach the motor to the plywood motor mount
with four 3 x 6mm fl at head machine screws. Be sure
to use threadlocker on the threads.
8
2. Mount the plywood motor mount to the front of the
❏
fuselage with four 2-56 x 3/8" [10mm] machine screw
and #2 fl at washers. Apply a drop of threadlocker to
the screws before installing.
4. Before you install the receiver in the ESC/receiver
❏
compartment, make a battery strap by overlapping
the hook and loop material by 1" [25.4mm]. Insert
the strap through the forward slots in the battery tray.
Temporarily place the motor battery on the battery tray
and trim the battery strap to fi t.
5. Route the servo wires to the ESC/receiver
❏
compartment. Plug the servos into the receiver and
place the receiver in the compartment.
INSTALL THE COWL
1. Tape a piece of paper to both sides of the fuselage,
❏
even with the fi rewall. Draw a line 5/32" [4mm] back
from the fi rewall. Place a mark 3/8" [9.5mm] and 1-3/4"
[44mm] from the top.
3. Place the ESC in the ESC/receiver compartment
❏
and route the ESC wires out the fi rewall. Connect the
ESC to the motor. See the instructions included with
your motor and ESC for operating and safety information.
6. Place the compartment cover on the bottom of
❏
the fuselage. Use a #2 x 1/4" [2 x 6mm] sheet metal
screw to attach the nylon latch to the bottom of the
fuselage. Harden the screw hole with thin CA.
9
2. Slide the cowl on the fuselage. Install the spinner
❏
backplate and center the backplate on the front of the
cowl. Drill 1/16" [1.6 mm] pilot holes through the cowl
and fuselage at the marks.
3. Secure the cowl to the fuselage with four #2 x
❏
1/4" [6mm] sheet metal screws. Harden the screw
holes with thin CA.
4. 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 motor mounting screws loosen,
possibly with disastrous effect, but vibration may also
damage the receiver.
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.
5. Install the spinner and propeller. Secure the
❏
spinner cone to the backplate with two 2.5 x 10mm
sheet metal screws.
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 “sticky-back” 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.
5. The recommended pilot will require some trimming
❏
to fi t in the cowl. We used a piece of scrap wood to
make a base on which to mount the pilot.
GET THE MODEL READY TO FLY
BALANCE THE MODEL LATERALLY
1. With the wing level, have an assistant help you
❏
lift the model by the spinner 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 aileron pushrods
and the wheel collars on the elevator and rudder
pushrods to center the control surfaces.
4-CHANNEL RADIO SETUP (STANDARD MODE 2)
RIGHT AILERON
RUDDER
MOVES
RIGHT
FULL
THROTTLE
3. Make certain that the control surfaces 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.
MOVES UP
LEFT AILERON
MOVES DOWN
ELEVATOR
MOVES DOWN
SET THE CONTROL THROWS
To ensure a successful fi rst fl ight, set up your Mini
Contender EP ARF according to the control throws
specifi ed in this manual. The throws have been
determined through actual fl ight testing and accurate
record-keeping, allowing the model to perform in the
manner in which it was intended. If, after you have
become accustomed to the way the Mini Contender
EP 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.”
10
These are the recommended control surface throws:
1. 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.
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.
LESS
Pushrod Farther Out
THROW
MORE
Pushrod Closer In
THROW
Pushrod Farther Out
MORE
THROW
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.
Pushrod Closer In
LESS
THROW
HIGH RATE LOW RATE
Up and
Down
ELEVATOR
Right
& Left
RUDDER
Up and
Down
AILERONS
Note: The high rate ailerons can be sensitive around
center. We recommend that 20% to 30% expo on the
high rate ailerons.
3/8"
[10mm]
11°
1-1/8"
[29mm]
22°
5/8"
[16mm]
25°
Up and
Down
Right
& Left
Up and
Down
1/4"
[6mm]
7°
3/4"
[19mm]
14°
3/8"
[10mm]
14°
BALANCE THE MODEL (C.G.)
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, motor battery, propeller,
spinner and canopy.
11
2-5/16"
[59mm]
1. If using a Great Planes C.G. Machine, set the
❏
rulers to 2-5/16" [59 mm]. If not using a C.G. Machine,
use a fi ne-point felt tip pen to mark lines on the top of
the wing on both sides of the fuselage 2-5/16" [59mm]
back from the leading edge. Apply narrow [1/16" [2 mm]
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. 1/8" [ 3 mm] forward or 3/16" [4.8mm] 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- 5/16" [59 mm]
2. With the wing attached to the fuselage and all
❏
parts of the model installed (ready to fl y), 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.” Move the motor
battery forward or aft to balance the plane. If moving
the motor battery does not shift the weight enough, 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 (the
horizontal stabilizer is level). A good place to add stickon 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 come off the fuselage. 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,
vibration may cause the weight to fall off. Instead,
permanently attach the weight with glue or screws.
Note: We have found on our sample models that we
were able to balance the plane at its forward and aft C.G.
locations by moving the motor battery. No additional
weight was required.
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. Check the C.G. according to the measurements
❏
provided in the manual.
2. Be certain the motor battery is securely mounted
❏
in the fuse. Make sure the battery straps around the
motor battery are tight.
3. 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.
4. Balance your model laterally as explained in the
❏
instructions.
5. Use threadlocking compound to secure critical
❏
fasteners such as the screws that hold the wheels on
the landing gear and the motor to the motor mount.
6. Add a drop of oil to the landing gear so the wheels
❏
will turn freely.
7. Give the control surfaces a quick tug to make
❏
sure all hinges are securely glued in place.
8. Reinforce holes for wood screws with thin CA
❏
where appropriate (servo mounting screws, cowl, etc.).
9. 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
12
before every fl ight. With computer radios it is easy to
mistakenly change the model.
10. Make sure that all servo arms are secured to
❏
the servos with the screws included with your radio.
11. Secure connections between servo wires and
❏
Y-connectors or servo extensions with vinyl tape, heat
shrink tubing or special clips suitable for that purpose.
12. Make sure any servo extension cords you may
❏
have used do not interfere with other systems (servo
arms, pushrods, etc.).
13. Balance your propeller (and spare propellers).
❏
14. Check that the spinner screws are tight.
❏
15. Place your name, address, AMA number and
❏
telephone number on or inside your model. This is an
AMA rule.
16. If you wish to photograph your model, do so
❏
before your fi rst fl ight.
17. Range check your radio when you get to the
❏
fl ying fi eld.
PREFLIGHT
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
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 motor off and once
with the motor 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.
● The motor may get hot! Do not touch it right after
operation.
● When working on your plane, remove the propeller
if the motor battery will be connected.
● Always remove the motor battery from the plane
when charging.
● Follow the charging instructions included with your
charger for charging LiPo batteries. LiPo batteries
can cause serious damage if misused.
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.
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 15
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 batteries
the night before you go fl ying, and at other times as
recommended by the radio manufacturer.
MOTOR SAFETY PRECAUTIONS
Failure to follow these safety precautions may
result in severe injury to yourself and others.
● Get help from an experienced pilot when learning
to operate electric motors.
● Use safety glasses when running motors.
● Do not run the motor 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 run the motor.
● 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.
13
2) I will not fly 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.
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
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.
FLYING
The Mini Contender EP ARF is a great-fl ying model
that fl ies smoothly and predictably. The Mini Contender
EP ARF does not, however, possess the self-recovery
characteristics of a primary R/C trainer and should be
fl own only by experienced R/C pilots.
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. If necessary, adjust
the nose wheel so the model will roll straight down
the runway.
Remember to takeoff into the wind. When you’re ready,
point the model straight down the runway and gradually
advance the throttle. 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 motor 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.
14
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 Mini Contender EP 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 battery
left, practice slow fl ight and execute practice landing
approaches to see how the model handles at slower
speeds. Add power to see how she 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 fl ight time, but use this fi rst fl ight
to become familiar with your model before landing.
LANDING
To initiate a landing approach, lower the throttle while on
the downwind leg. Allow the nose of the model to pitch
downward to gradually bleed off altitude. 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. 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 climb out to
make another attempt. When you’re ready to make
your landing fl are and the model is a foot or so off
the deck, smoothly increase up elevator until it gently
touches down.
One fi nal note about fl ying your model. 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!
15
This model belongs to:
Name
Address
City, State, Zip
Phone Number
AMA Number
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