Ok I am geting 2 spads that are for a .25 and a .15 and well.... can you put .40 size engys on them or will it be over powered? or more like a jet :P

Bushing .40's like the TT .42 and the OS 40 FP and LA have similar power to most hot (Bearing) .25's.

In the QHOR/SPA3D style planes, people were using .40's in the 25 size all the time, and .60/.75's in the .46 sizes with little trouble at all.

What type of SPAD were you thinking of overpowering?

I am thinks of a flat bat and a deminor i think

Ok its a flat bat and a Sat day night special

Well, it's pretty indestructible, so I say go for it. Heheee, looking forward to hearing a flight report. You'll want to make the nose as short as possible and lengthen the tail a little to handle the extra weight without having to add too much ballast.

Jeff A

umm yea he said to fly them at 1/2 speed on the engys lol

and I should fly fine and he said if i get a wild hair strap more bands on and go faster lol

We have Bats in Aus with 40 engines and they are quick, just be aware the CG will be off if they have been set up with 25's

AH thanks