Put the servos in the tail and you will have enough balance to install a 3 lb engine.
ORIGINAL: RC FANATIC
Yes I am looking for a gas engine for a Goldberg Sukhoi that would not just completely overpower it but enough that would pull it out of a hover better than a Saito 180 I have got into gas and like the money saving and power from gas engines. I appreciate any info on this Thanks Ryan