I've got a 4*120 kit coming in the mail right now.

Engine is going to be a Ryobi 31cc.

I have searched and done a lot of reading on this conversion. I just can't seem to find any really specific numbers.

One guy says he cut the firewall back and had to add lead to the tail---but he doesn't state if he used servos in the tail or not. Kinda useless to know how much he cut the firewall back when he doesn't indicate if he used servos in the tail or not.

Another guy will tell ya he used 2 hi-torque servos in the tail and had to add lead in the tail to balance. But he doesn't indicate if he cut the firewall back or not.


I need specifics guys. PLEASE

How much did you move the firewall?

Did you put servos in the tail or not?

How many servos in the tail?
2 elevator servos? 1 rudder servo? 1 elevator servo? 1 rudder servo? Rudder is pull-pull on the CG? What? What did you do?

Did you use a mount from wacker engines? 2" or 3" mount?

PLEEEEEASE post specifics on this mod with the Ryobi 31cc engine. PLEEEEASE.

Thanks very much.