I would say probably all of them. In my opinion, the best performance
enhancement for a Q-1 would be an 8 stone pilot, (read my disclaimer).
I'm closer to 16 stone myself.

I have all five issues of the "Flying and Glider Manual" from the EAA.
They are extremely interesting reading, and they really drive home the
fact that minimalist, high performance airplanes with dodgy engines like
the Q-1 have been around a long time.

Stealth Pilot wrote:
is there a better engine for the Q1 than the onans?
Stealth Pilot





--
John Kimmel


Naturally, these humorous remarks are all entirely my own opinion, based
solely
on rumor, supposition, innuendo and damned lies, and should be
interpreted in a
spirit of fun. My memory is faulty, also.