I am looking at buying the above for an 80" scratch build project and would like to get some representative rpm numbers. Scott gives 7700rpm with an APC 18x10 for a new engine and he told me they typically gain around 300rpm with break in. But he did not have any numbers for bigger props, which is what I will be using. Does anybody have numbers for APC 20x8, 20x10 and 22x8 props, using the stock muffler and/or a canister system?


Thanks,
Mark