Twisted Hobbys Big Turbo Beaver User Manual
Rev: 2015.06.28.v01c
page 1
USA Distributor
Twisted Hobbys
www.twistedhobbys.com
Big Turbo Beaver
MOTOR: 1x 72g / 1000 to 1200kV Outrunner
ESC: 1x 30amp
SERVOS: 4x 14g / 2x 5g
PROP: 10x3.8 SF Prop
BATTERY: 3s / 1000-1350mAh
RADIO: 4 to 7 channel
WINGSPAN: 43-1/2”
LENGTH: 39-3/8”
AUW: 630g (depends on equipment)
Rev: 2015.06.28.v01c
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SAFETY NOTES
Before assembling and flying this model, read carefully any instructions and warnings of other
manufacturers for all the products you installed or used on your model, especially radio
equipment and power source.
Check thoroughly before every flight that the airplanes’ components are in good shape and
functioning properly. If you find a fault do not fly the model until you have corrected the
problem.
Radio interference caused by unknown sources can occur at any time without notice. In such a
case, your model will be uncontrollable and completely unpredictable. Make sure to perform a
range check before every flight. If you detect a control problem or interference during a flight,
immediately land the model to prevent a potential accident.
Youngsters should only be allowed to assemble and fly these models under the instruction and
supervision of an experienced adult.
Do not operate this model in a confined area.
Do not stand in line with, or in front of a spinning propeller and never touch it with any object.
IMPORTANT: PRIOR TO ANY ASSEMBLY
Please Note: after removing kit from shipping box, lay each piece flat on a
hard surface, this will allow the airframe to straighten out if lightly bent
from shipping. Do not worry since EPP is very pliable and can be bent back
if out of shape.
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TWISTED HOBBYS
Website: www.twistedhobbys.com – email: sales@twistedhobbys.com
Thank you for your purchasing a Twisted Hobbys‘ model. Please read through the entire manual before beginning to
build this model. If you have any questions please contact us at the above indicated email address.
WARNING INFORMATION
This R/C Aircraft is not a toy! Read and understand the entire manual before assembly. If misused, it c an cause serious bodily harm and
property damage. Fly only in open areas, and AMA (Academy of Model Aeronautics) approve d flying sites. Do not over look the warnings
and instructions enclosed or those provided by other manufactures’ products. If you are not an experienced pilot and airplane modeler you
must use the help of an experienced pilot or an authorized flight instructor for the building and flying of this model aircraft.
These instructions are suggestions only on how to assemble this model. There are other ways and methods to d o so. Twisted Hobbys has
no c ontrol over the final assembly, the materials and accessories used when assembling this kit, or the m anner in which the assembled
model, installed radio gear and electronic p arts are used and maintained. Thus, no liability is assumed or accepted for any d amage
resulting from the use of th e assemb led model aircraft or from this instruction manual including but not limited to direct, indirect,
incidental, special, and consequential damages. By the act of using this user-assembled product, the user accepts all resulting liability. In
no event shall Twisted Hobbys’ liability exceed the original purchase price of the kit.
SHIPPING DAMAGE
Twisted Hobbys checks each plane before shipping to ensure that each kit is in fine condition. We have no bearing on the condition of any
component parts damaged by use, modification, or assembly of the mod el. Inspect the components of this kit upon receipt. If you find any
parts damaged or missing, contact Twis ted Hobbys immediately. We will not accept the return or replacement of parts on which assembly
work has already begun. Twis ted Hobbys reserves the right to change this warranty at anytime without notice.
OUR MISSION
To provide the best products and service to our customers at the lowest prices pos sible. We take great pride in
our company, our commitment to customer service and in the products we sell. Our online store is designed
to provide you with a safe and secure environment to browse our product catalog.
Thank you for shopping with Twisted Hobbys!
Rev: 2015.06.28.v01c
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kit contents
Fuselage Parts
Double check that you have all the
above pictured items. Note - Some
kits might have slight deviations from
the above pictured items.
Wing, Tail Surfaces and Carbon Spars
Double check that you have all the
above pictured items. The Carbon
Bundle includes tail push rods and
wing spars. Note - Some kits might
have slight deviations from the above
pictured items.
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kit contents (cont.)
Hardware Kit Detail
Double check that you have all the
above pictured items. Note - Some
kits might have slight deviations from
the above pictured items.
Plywood, Foam and Hardware Kits
Double check that you have all the
above pictured items. The Hardware
kit items are detailed to the right.
Note - Some kits might have slight
deviations from the above pictured
items.
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TOOL AND ADHESIVES NEEDED
Tools shown and listed are suggestions only.
Depending on your building technique you may not
need everything indicated – and/or – you may find that
other tools available to yourself may be of benefit to
your Build.
It is also recommended that you have a flat building
surface, one that will accept stick pins and push pins.
An Acrostic Ceiling panel from your local hardware
store fits this bill nicely, and will lay flat on your work
table. Over size / long push pins are available at your
local craft store. These two items are by no means
required, but will aid in the building process, and can
be used for future projects
Lighter
Small Drill Bits
Tape Measure and Ruler
Black Sewing Thread
Welders Glue
Hobby Knife w/new Blade
Needle Nose Pliers
Wire Cutters
Low Temp Hot Glue Gun
Course Sand Paper
Scissors
Small Phillips Screw Driver
Thin and Medium CA
CA Applicator Tips
Activator
Rev: 2015.06.28.v01c
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the build
CONSTRUCTION METHODS:
Building surface should be at least 2ft x 4ft and at. Weights or some small heavy objects will be handy for holding things in place
during the time glue is setting.
Welders glue is used for FOAM TO FOAM joints. Thin and Medium CA are used on the PLASTIC TO FOAM and CARBON TO FOAM
joints. When using the Welders glue for a butt joint, apply a thin lm to each surface, allow to sit for approx ve minutes and
then assemble. Note that this method will create a nearly instant bond, so locate carefully when bringing the two pieces together. If
alignment is necessary or a slip joint, do not allow the glue to tack up, simple apply and join immediately, you will have several
minutes to locate the two parts before the glue sets up. In most cases the parts being glued can be handled with care in 30 minutes,
full cure is approx 24 hours.
The above picture items will be needed to nish the model.
A power combo (Twisted Hobbys’ Combo pictured above), a
3s/1300mAh battery and a fresh tube of Welders. Note -
the Battery and Welders are NOT part of the power combo,
everything else shown is.
Start the build by locating the two wing halves, the elevator
and the rudder. Fold back as shown and weigh them down
for about an hour. This will loosen up the hinge line and
allow the surfaces to move much more freely. The wing
hinge will be stiff... work it slowly so it doesn’t tear
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While the control surface are relaxing,
gather up all your radio gear.
IT IS IMPERATIVE TO DO THE
NEXT COUPLE STEPS PRIOR TO
INSTALLATION!
Attach connector to the ESC that
matches the batteries you will use.
Note - if using the recommended
battery and ESC location you will need
to make an extension. See page 37.
Plug everything in, bind the radio per
mfg instructions and check that all the
servos operate correctly and smoothly.
Hang on to the motor near the wires,
and test it’s operation as well.
Using the “tack up” method apply a
skim coat to the mating surfaces.
Note - you have to build a Left and
Right had version. Take this into
account when applying the glue.
Locate the above items needed for the
Lead Edge Flap (LEF) assemblies.
Screws shown are the 4 tiny M2x5
screws that are located in the hardware
bag.
With many ESC’s it is required to
program throttle end points. Follow the
mfg instructions for this operation and
complete the process at this time.
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Attach the plastic pieces as shown,
lining up their proles with the prole
of the LEF. Again, be sure and make a
left and right version of these two
pieces.
With the M2x5 screws, attach the wood
pieces as shown. Note that they go on
the INSIDE of the plastic pieces. The
wood pieces must pivot, so do not over
tighten the screws.
When completed you should have
something that looks like the above
parts.
Using thin CA and kicker, glue the
wood pieces of the LEF to the wing, be
very careful that you do not get glue in
the area that pivots.
Fully engage the wood pieces and make
sure there is no binding of movement
when exercising the LEF.
Test t wood pieces of the LEFs into
their respective slots in the wings
leading edge. Note - the plastic piece
with the horn is INBOARD and on the
UNDER side of the wing.
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Make sure you have equal amounts of
up and down movement as shown in
this and the next picture.
Movement in the opposite direction
should be approx equal to the
movement in the previous picture. Note
this does not have to be exact, just
similar.
Apply a medium tack up coat to the
mating surfaces of the items shown
above. Note - the UNDERSIDE of all the
pieces should be facing UP.
In addition to the spars you will need
the above picture two items from one of
the wood kits.
Installing the 1x3x980mm carbon spars
in to the wing is next. Locate the spars,
these should just have been loose in
the box.
Once the glue has tacked up, join the
pieces together making sure that the
airfoil proles align as perfectly as
possible.
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The wood pieces will install into the
pre-cut slots pictured above. Welders
should be used for this.
Apply a Wet coat of Welders to both
sides of the part AND squeeze a little
into the slot area. If possible keep the
“notch” free of glue. Then slide the
wood piece in, arrow pointing forward.
Slide the wood piece in until it is ush
and wipe away any excess glue that
squeezed out
Once the whole length of the spar is
install, it should look similar to the
above picture.
Install the spar DRY. Make sure that
the slit you cut was “just” deep enough
so that the spar when fully seated will
be ush with the wings surface.
Next, cut a 3mm deep slit, centered and
long enough to accommodate the
carbon spar. Location front to back is
determined by the relief cut in the small
wood pieces just installed
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Once you are happy with the depth of
the spar, wick in some thin CA for the
entire length and hit with kicker.
Flip the wing over and repeat the
process on the top side.
Locate the wood piece shown above and
coat it with a medium amount of
Welders and with the nozzle of the tube
squeeze some Welders into the slot.
Once the Welders has tacked up, bring
the two pieces together. Align them on a
at surface and use the trailing edges
as reference.
Grab the black two counter balance
pieces that glue onto the end of the
ailerons. Coat the them mating surfaces
with a lm of Welders and let tack up.
Install the piece as shown, from the
under side. Make sure that ts ush on
the top side, and ush everywhere on
the bottom except where it gets wider
for the hook.
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Locate the servos that will be used for
the LEF’s. Depending on the size servo,
you may or may not need to adjust the
size of the cut out.
Figure out where the slits need to go for
the ears of the servo, and adjust the
size of the pocket if necessary. Make
sure that the output arm of the servo
lines up with the horn of the LEF
Repeat for the other side. Some servos
may stick up a little from the surface of
the wing, this is ne.
Press the servo into position.Locate the slits for the servo tabs by
lining up the output shaft/horn with
the center of the slot in the wing as
shown above.
Locate the servos that will be used for
the ailerons. As with the LEF’s, the size
of servo being used will determine if
there needs to be any trimming of the
pre-cut pocket.
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