Great Planes Gee Bee Profile 40 Kit - GPMA0485 - Manual (Page 23)

Balance your propellers carefully before flying An
unbalanced prop is the single most significant cause of
vibration Not only will engine mounting screws and bolts
vibrate out, possibly with disastrous effect but vibration will
also damage your radio receiver and battery Vibration may
cause your fuel to foam, which will, in turn cause your
engine to run lean or quit.
least 6 miles away from houses, buildings and streets and
any other R/C radio operation like R/C boat and R/C cars A
schoolyard may look inviting but is too close to people,
power lines and possible radio interference
We use a Top Flite Precision Magnetic Prop Balancer
(TOPQ5700) in the workshop and keep a Great Planes
Finger Balancer (GPMQ5000) in our flight box
Inspect your radio installation and confirm that all the
control surfaces respond correctly to the transmitter inputs
The engine operation must also be checked by confirming
that the engine idles reliably, transitions smoothly and
rapidly to full power and maintains full power indefinitely
The engine must be "broken-in" on the ground by running it
for at least two tanks of fuel Follow the engine
manufacturer s recommendations for break-in Make sure
all screws remain tight, that the hinges are secure and that
the prop is on tight.
Whenever you go to the flying field check the operational
range of the radio before the first flight of the day First,
make sure no one else is on your frequency (channel) With
your transmitter on, you should be able to walk at least 100
feet away from the model and still have control While you
work the controls, have a helper stand by your model and
tell you what the control surfaces are doing Repeat this
with the engine running at various speeds with a helper
holding the model If the control surfaces are not always
responding correctly, do not f l y Find and correct the
problem f i r s t Look for loose servo connections or
corrosion, loose bolts that may cause vibration, a defective
on/off switch, low battery voltage or a defective receiver
battery, a damaged receiver antenna, or a receiver crystal
that may have been damaged from a previous crash
Since you have chosen the Gee Bee Profile, we assume
that you are an experienced modeler Therefore, you
should already know about AMA chartered flying fields and
other safe places to fly If for some reason you are a
relatively inexperienced modeler and have not been
informed, we strongly suggest that the best place to fly is
an AMA chartered club field Ask the AMA or your local
hobby shop dealer if there is a club in your area and join
Club fields are set up for R/C flying and that makes your
outing safer and more enjoyable The AMA address and
telephone number are in the front of this manual If a club
and flying site are not available, find a large, grassy area at
NOTE: Failure to follow these safety precautions may result
in severe injury to yourself and others
Keep all engine fuel in a safe place away from high heat,
sparks or flames, as fuel is very flammable Do not smoke
near the engine or fuel, and remember that the engine
exhaust gives off a great deal of deadly carbon monoxide.
Do Not run the engine in a closed room or garage
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