Decisions You Must Make; Radio Equipment; Power System Recommendations - GREAT PLANES Cherokee .40 ARF Instruction Manual

3. You must take time to build straight, true and strong.
4. You must use an R/C radio system that is in fi rst-class
condition, and a correctly sized engine and components
throughout the building process.
5. You must correctly install all R/C and other components
so that the model operates correctly on the ground and in
the air.
6. You must check the operation of the model before every
fl ight to insure that all equipment is operating and that the
model has remained structurally sound. Be sure to check
clevises or other connectors often and replace them if they
show any signs of wear or fatigue.
7. 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.
8. 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.
9. WARNING: The cowl and wheel pants 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 Cherokee
.40 ARF that may require planning or decision making before
starting to build. Order numbers are provided in parentheses.

Radio Equipment

The Cherokee .40 ARF requires a minimum 4-channel radio
system with four to seven 44 oz.-in. [3.2 kg-cm] minimum
standard servos. Operational fl aps will require six servos.
If you are installing a glow engine, an additional standard
servo is required for the throttle.
In addition, two 9" [229mm] servo extensions are required
for the aileron servos. If you are using a radio system that
does not support mixing functions, two Y-harnesses will also
be required to connect the aileron servos and fl ap servos to
the receiver.
A charge jack receptacle is optional, but is useful for recharging
the receiver pack without removing the canopy hatch and
is shown in the assembly of the plane. Recommended part
numbers for the radio components are provided below:
❏
®
Futaba S3003 Servo Standard (FUTM0031)
❏
Futaba S9001 Servo Aircraft Coreless BB
(optional, FUTM0075)
❏
Futaba 9" Servo Extension J (FUTM3910)
❏
Futaba 6" Dual Servo Extension J (FUTM4130)
❏
Ernst Charge Receptacle Futaba J FM (ERNM3001)

Power System Recommendations

The recommended engine/motor size for the Cherokee .40
ARF is a .40 to .46 cu in [7 to 7.5cc] two-stroke engine, .56
cu in [9.2cc] four-stroke engine, or a RimFire
brushless out-runner motor. If installing a two-stroke glow
engine, a Pitts muffl er is recommended. The stock muffl er
can also be used with a muffl er extension but additional
modifi cation to the fuselage and cowl would be necessary.
Engine and motor order numbers are provided below:
❏
®
O.S. .46 AX ABL w/Muffl er (OSMG0547)
❏
Bisson O.S. .46 SF/FX .50 SX Pitts Muffl er (BISG4046)
❏
O.S. Muffl er Extension #873 (OSMG2578) (Stock
muffl er only)
❏
Great Planes RimFire 42-50-800 out-runner
brushless (GPMG4700)
❏
Great Planes Brushless Motor Mount Medium
Motors (GPMG1255)
3
™ 42-50-800kV