Futaba GY701 Quick Start - Manual (Page 15)

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ｎ WARNING
Always make small (1%) adjustments to the
tail rotor D/R or EPA once the value exceeds
100%. Over 100%, it is possible to exceed the
sensor’s Angular Velocity Sensing Range (+/-
1,200° per second). The gyro will then no longer
control the pirouette rate or consistency. The
pirouette rate can be extremely fast.
If you experiment with the ultra-fast pirouette
rate, make sure that your flight battery and
fuel tank are secure. Also be certain that your
model’s tail rotor drive train is up to the task.
The gain should be raised until the tail begins to
oscillate quickly (also called Tail Wag). Once this
point has been achieved, reduce the gain by a couple
of percent and test fl y the model again. Check and
set the gain for each fl ight mode. Typically the gain
will be lower for the Idle up 1 and Idle up 2 fl ight
modes due to the higher head speed being used. The
gain for the Hold condition can also be much higher
than other fl ight modes since the head speed is lower
and the engine vibration is minimized.
The Tail Rotor AFR or D/R function within the
transmitter is used to adjust the pirouette rate of the
helicopter. For example at 100% D/R, with the gyro
set to F3C mode, the helicopter will achieve a 450
deg/sec pirouette rate. If you would like the model
to pirouette faster, then increase the AFR or D/R. If
you would like the model to pirouette slower, then
decrease the AFR or D/R.