Hi all.

I'm questioning myself about moving on from a large prop to a small one on an already broken-in "taped bore" engine (maybe 1 or 2 hour running time). According to some local RCU experts, (it also sounds logical to me) that would dramatically increase max RPM and operating temperature, thus requiring a different piston / sleeve fit. Piston and sleeve would expand more, and therefore would create a bigger piston/sleeve "gap" as running-in has been carried out at low temperature (it wore more piston/sleeve material), thus harming top RPMs.
Do you think that that kind of engine wouldn't be able to reach the same RPM as if it had been broken-in first with a small prop ?

Thanks for your input !