I have assembled the plane as in the instructions. I put a Saito 100 in it. It is so tail heavy, I don't have enough lead to balance! Has anybody else had this problem and how did you solve it?

I HAD THE SAME PROBLEM WITH MY GROOVY AND IT WAS BECAUSE I PUT A 2 STROKE 46 ON IT WHEN IT CALLED FOR A 4 STROKE WHICH IS A LOT HEVIER!

I just purchased a Groovy 90 3a.

What did you do about the plane being so tail heavy?

This plane was designed for the YS-91 (it is a direct fit). The YS 110 also fits. One of my friends had a Groovy with a YS 110 with a pipe and it balanced fine. Another one of my friends has an OS 140RX with a pipe on his... Yes, it is ballistic. It takes off on about 1/4 throttle. Anyway, he was able to balance his fine too.

I have a Groovy 90 still in the box that I am looking at assembling this winter. I am looking at putting an OS 108FSR or a Webra 120 with a pipe on it. As far as four strokes, if I were you I would either go with a YS 110 or something just as powerful. I wonder if a Saito 150 would fit??? I don't know about the Saito 100 or 120 because my friend that went with the YS 110 originally had a pumped OS 120 and you could tell it was running out of motor on the up lines, but once he but that powerful 110 on it performed beautifully.

Tom

the groovy 90 is specifically desgined for 90 size 4 stroke engines with exhaust systems (hatori)