Gy240 ACVS problem
 

I'm running the Futabab Gy240 gyro in my raptor 30. I've been using the rate mode since I got it in August and switched it to AVCS (HH) mode yesterday. Everything seemed to work fine. Today I take it out and the heli started doing slow counter-clockwise pirouettes. I switched back to rate mode and it worked quit turning. It's seems to change the center point of the servo depending on which mode I'm in. Is this a gyro malfunction?

Ryan

Hey Ryan,
 

Nothing is wrong with the gyro.
When u switch it to HH mode or AVCS mode, make sure you have all the Revoloution Mixing to 0. If you have revo. mixing ON , the tail will not stop turning. Also in HH mode make sure you have your rudder trim in center position.
For easy set up follow this:
Put your gyro AVCS mode button to ON position and keep the radio and gyro On. Rudder trim to zero or center.
All revo. mix off or zero. Center the servo horn at 90 degree. Set the tail pitch slider so you get 0 (zero) pitch by adjusting the tail linkage mechanically. This position you will see the tail blades are straight.
Now turn the radio and gyro off.
Now turn on the Radio first then turn on the gyro.
You will see when you move the rudder stick, the rudder servo horn wants to stop a little where you give 'em the movement. Thats what the HH mode is for.
Very easy. No more tail holding.
Fly safely.

Arshad