Fire that thing up!

I have a 3W 80xi/supersonic pitts in my 35% Extra 260 and it turns a Bolly wood 26-10 at 6300 rpm. Pulls good but the plane weights 25lbs so things could be better. I just ordered a ZM 26-10 for it and with the increase in rpm ( Dick, you say it happens) I am hoping for a little more pull. Still...... its good but looking for more.

I think the added 5cc will give more, but enough to turn a 27-10. Hmmmmm, maybe.
When the 80 Xi came out it was going to turn a 27-10,
I like my 3W, it has been good to me!

I think they should have just went to 100cc.

Good luck with that sinergy. Your installation looks like mine, and cooling should be fine.