OK.

BUSA Phaeton. It flies well in general. Roll rate is a little slow but it does tight loops. THe elevator and stabilizer are in the same plane when trimmed for straight and level hands off flight. IT seems a little under powered with an OS 52 surpass but it does OK.

When I try an outside loop, it dies and rolls out before it gets to the top. If I dive and get alot of speed it will just get over but usually even then it falls off to one side or the other.

I changed the incidence of the upper wing from +1.75 degrees to -1 degree thinking it might be working against an outside loop. Other than changing the elevator trim so that it is as stated above, it does not seem to have had any effect.

What else should I look at? I could try raising the flapperons a bit so it had a reverse flap effect.

Any ideas? THe CG seems ok. Just slightly ahead of the mark on the plans. It is pretty docile for a short winged bipe.

I thought sure changing the wing incidence would do the trick.

Jeff