Futaba GV-1 - Manual (Page 20)

ASSEMBLY & ADJUSTMENT
Fuselage setting precautions
Throttle servo linkage precautions
To effectively use the governor, observe the following precautions when con-
necting the servo linkage.
-Make the servo operating range as wide as possible.
Make the throw of the transmitter ATV function, AFR function, and func-
tions as close as possible to 100%. The governor will not operate at throws
lower than 50%.
-Do not use the throttle curve. Operate the throttle linearly.
-Fly with the governor turned OFF and adjust the needle so that the
engine smoothly reacts to movement of the transmitter stick.
If there is a point at which the reaction of the engine is considerably differ-
ent due to a too rich or too lean mixture, the governor may not operate to
its maximum potential..
Use of a tuned silencer
The use of a tuned pipe type silencer may cause the engine throttle
response to be substantially different from that with a normal muffler.
Adjust the needle (and pipe length) so that engine speed changes are
proportional to the throttle opening. If the engine speed does not
change linearly, the governor will not perform satisfactorily with a muf-
fler or a pipe that does not allow the carburetion to be linear.
Fuselage vibration countermeasures
If the helicopter frame is weak, or the engine mount is deformed or not
installed properly, the vibrations applied to the engine will increase.
Engine vibrations will lead to unstable speed and prevent the governor
from maximum performance. Therefore, make sure that the engine is
vibration free and that the carburetor is of good liner design because
the governor cannot correct engine problems.