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Old Jun 12, 2010, 05:48 PM
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rcastab's Avatar
SF Bay Area, California, USA
Joined May 2001
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Need Help: Gyro setup for a brushless coaxial heli

I have a coaxial heli I'm trying to make work with my DX7 Tx, two brushless motors with two brushless esc and a stand alone gyro.

General wiring:
TX(trottle channel)-esc1-motor1
TX(Rudder channel)-Futaba GY520-esc2-motor2
TX(Gear channel)-Fubata Gyro Gain connector
TX(Elevator channel)-Elevator Servo
TX(Aileron channel)-Aileron servo

I already setup the gear channel as the gyro input in the DX7 (at 50% for both positions)
After setting it up, the main motor seems to run fine but the rudder motor does not seem to respond or turn at all.

Questions....
How do I setup my DX7 Tx to make it work and is this even possible?
Do I need to mix the rudder and throttle channels?

Thanks, any help is appreciated.
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Last edited by rcastab; Jun 12, 2010 at 06:38 PM. Reason: add more info
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Old Jun 13, 2010, 03:36 AM
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Denver, CO
Joined Dec 2005
6,459 Posts
If you give it full left rudder does the second ESC arm?
Some info on the second page of this thread about the mix. http://www.rcgroups.com/forums/showthread.php?t=447808
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