I never can remember that number for some reason.

This gyro uses the ATV on the controlling channel to adjust the gain (from -100% to +100%), the AVCS (futabas goofy heading hold function) kicks in when the ATV on the contrilling channel goes anywhere above +60%. You want to make absolutely sure that the AVCS is not able to come on!!!!!!

I have mine set to go to as much gain as possible without AVCS coming on (probably about +60%) when the gear is down, and 0% gain when the gear is up. The gear channel is Y'ed to the gyro to control gain, this creates problems since it is neccessary to adjust the gain of the gear channel to properly control the gyro, but then the gear servo will be out of adjustment for proper throws to move the retract valve. I had to experiment with servo arm length and linkages between the retract servo and the retract valve to get it to operate correctly without binding. This would not be a problem if you were to use a seperate channel to control the gyro gain. If you have a radio that allows you to disable switches you could mix the gain control to the gear channel and not even have to worry about any other switch positions, my radio (PCM10SX) does not have this function so I chose to use a Y and avoid complicating my preflight and landing checklist.

BTW, for what it is worth I am using 9011 servos on my rudders and a single 4-cell (2400 mah) battery pack.