Looking for what a high performing engine puts out on the bench with an APC 9x6 prop or whatever prop is best for Class I & PC. I understand the Nelson .40 & .36 engines are the current top choice of the winning entries.
Just trying to see what the target RPM is for each class on 10% Fuel, with the tuned muffler.
I've added throttles to combat engines for use in carrier.
Top RPM is not the issue, it's LOW RPM that matters.
The high RPM is whatever you want it to be as determined by the prop load.
Remember, it's an acceleration timing and less that 20 seconds at top speed, also, no need to stunt. This takes away some of the issues of combat engines.
I always do bench testing before I commit to a building project.