Balance the model (c.g.) – Great Planes de Havilland Tiger Moth EP ARF - GPMA1134 User Manual

Page 12

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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. 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.

1. Mount the propeller (not included) to the propeller

adapter with the prop-saver O-ring that came with the RimFire
motor. A Great Planes 8 x 6 ElectriFly PowerFlow

Slow-

Flyer propeller (GPMQ6610) is recommended. The easiest
way to mount the prop is fi rst to hook the O-ring around one
of the screws, fi t the propeller, and then use a small (#00)
Phillips screwdriver to loop the O-ring around the propeller
hub and the other screw. Suggestion: Purchase spare Prop
Saver O-Rings (GPMG1405).

2. Optional: Fit the servo cover over the servo

compartment. If necessary, use a couple of small strips of
tape to hold the cover in place.

3. If you haven’t done so already, attach a strip of the softer,

“loop” side of the included Velcro hook-and-loop material to

the motor battery. Install the motor battery in the fuselage to
the other Velcro strip you attached earlier.

At this stage the model should be in ready-to-fl y condition

with all of the systems in place including the motor, complete
radio system, ESC, propeller and battery.

4. Place the model upside-down. Use two pencils or

ballpoint pens to lift the model at the middle dimples you
marked earlier with the template, noting the recommended
balance point.

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