RE: Extreme Flight Jeremy Chinn Yak-55SPs build thread
I'm running Futaba 9252 with a Tower TS-53 on the throttle. Battery is a 6 volt 900 NiMH built from 5 AAA Energizer cells that came from WalMart.
Standard servos on 6 volts should work OK for general 3D flying (hovers, harriers, etc.), but for aggressive 3D flying (pinwheels, snap rolls, etc.), I'm not sure standard servos will have enough speed and torque.