RE: Nylon gear servos and single 50cc engine
I've got a 12 year old Byron P-51 (85" span) with a G62 in it, that is full of Futaba S148 servos (nylon gear). The airframe probably has close to a thousand flights on it.
I'm probably going to replace all the servos when I refurbish the airframe. Don't want to push my luck too far.
I'm worried more about the RX being effected by the vibration.