RE: Extreme Flight Jeremy Chinn Yak-55SPs build thread
i asked about using 225mg's here and from ef in person, they say even though the torque is enough they dont reccomend it because the smaller gears cant hanlde the vibration as much as a standard size, however they did say some use them on the 58extra even when usning a glow motor though, but i opted not to do it, and you would need to modify the hole for the servos as well