CARF-Models Sukhoi SU-31
3
Attention!
This aircraft is a high-end product and can create an enormous risk for both pilot
and spectators, if not handled with care, and used according to the instructions.
Make sure that you operate your Mustang according to the AMA rules, or those
laws and regulations governing model flying in the country of use.
The engine, servos and control surfaces have to be attached properly.
Please use only the recommended servos, propellers, and accessories. Make
sure that the ‘Centre of Gravity’ is located in the recommended place. Use the
nose heavy end of the CG range for your first flights. A tail heavy plane, in a first
flight, can be an enormous danger for you and all spectators. Fix any heavy items,
like batteries, very securely into the plane. Make sure that the plane is secured
properly when you start up the engine. Have a helper hold your plane from the tail
end or from behind the wing tips before you start the engine. Make sure that all
spectators are behind, or far in front, of the aircraft when running up the engine.
Make sure that you range check your R/C system thoroughly before the 1st flight.
It is absolutely necessary to range
check your complete R/C installation
first WITHOUT the engine running.
Leave the transmitter antenna retracted,
and check the distance you can walk
before ‘fail-safe’ occurs. Then start up
the engine, run it at about half throttle
and repeat this range check with the
engine running. Make sure that there is
no range reduction before ‘fail-safe’
occurs. Only then make the 1st flight. If
the range with engine running is less
then with the engine off, please contact the radio supplier/engine manufacturer
and DON’T FLY at that time. If you use a Spread Spectrum radio please refer to
the instruction that came with your radio for proper range testing.
Check for vibrations through the whole throttle range. The engine should run
smoothly with no unusual vibration. If you think that there are any excessive
vibrations at any engine rpm’s, DON’T FLY at this time and check your engine,
spinner and propeller for proper balancing. The lightweight sandwich composite
parts don’t like too much vibration and they can suffer damage. The low mass of
all the parts results in a low physical inertia, so that any excess vibrations can
affect the servos and linkages.
Make sure that your wing and stab spar tubes are not damaged. Check that the
anti-rotation pins in the stabilizers are not loose. Check that the M3 bolts retaining
the horizontal stabilizers onto the aluminum tube are tight, and that the rudder
hinge wire cannot come out.