Agreed, more nitro=more power BUT when and where in the power curve ? Will the power curves become more peaky or flatten out ? Will peak hp and torque be produced at the same rpm or move up or down on the rpm scale ?
Hobbsy, as far as two strokes go, I was looking at the on-line manual for the Webra 50 which I have ( the one that came with the engine seems to have disappeared ). It shows a nitro range from 0% to 15% with a note that it will run well on FAI fuel. This might be a broad enough range to produce a bit of interesting and hopefully relevant data. Haven't checked but the Webra 61 may well be the same. If you have access to one of these engines, it might possibly be a good choice.
Thanks everyone !