hi guys, im building a 4*120 and i want to put a g23 gas for power. will it be nose heavy? should i move the firewall back some? has anyone used the g23 for power in a 120? thanks for any help. wally

I dont know for sure...but my 4*60 is still being built....but with a Saito .91 in it, its still a little tail heavy and this is the biggest engine u can.should put in it...everyone sais the 4*s all build tail heavy....so just try it....if you have to add weight, you have to add weight, no biggie...

with that much engine a little tail weight shouldent make a big deal. you could prolly balance it with the radio and batteries if you use a big batery. my 4* is tail heave too and its also overpowered so have fun.

A clubmate last year took put a small gas engine (weedeater or saw) on his 4*120 and relocated the elevator and rudder servos to the tail to assist in balancing. Sorry but don't know the exact size or weight of his engine. I'm flying a 4*120 with a Thunder Tiger Pro 120 engine (35 oz with muffler) and I was able to achieve balance by shifting my 1000mA nicad receiver pack up to the firewall and no additional weight. Total weight is about 10 lbs.