Hi there, first time post from me and I'm new to RC helis... I tried my best with google but couldn't turn up any help, I'm not so 'up' on terminology etc so maybe I wasn't searching for the correct terms, be patient!
Anyway, I'm struggling with a Futaba GY401, to the extent that I'm starting to think the gyro is faulty. Here's what happens:
1.) I power up heli in rate mode, let the servo centre, then power off
2.) Toggle gyro mode on TX to HH, power up heli
3.) Watch the gyro servo creep (2 or 3 seconds) to the full limit of its range
I've confirmed I've no trim or subtrim configured on the Tx, Revo mixing is off.
Turning the gyro in one direction results in a jump in the servo, then equally quick return to the start (extreme) position. Turning the other way doesn't move the servo at all (it's already at full limit).
Changing trim/subtrim while in HH mode can bring the servo back to center(ish) position, but it always begins creeping back towards the extremity again.
If I understand correctly, even in HH mode the servo should initialise (on power up of heli) close to the centre, and when the gyro moves, the corresponding servo movement should move, and stay moved until the gyro is returned to it's initial heading.
Am I missing something in my setup, or could the gyro be faulty (it's provenance is unknown, it was 2nd hand)?
Thanks in advance!