An independent source flying and running same airframe with the different engines would be the only practical way..Dyno helps show horsepower and curve maybe a timed test could show transition which imo is very important.
ORIGINAL: BadAzzMaxx
ORIGINAL: mighty9
ORIGINAL: Antique
Touche''
As for dynos. My friend and race engine person is building a small engine dyno for testing our engines....He builds hemi heads for fill size engines, has many world records at Bonnevile, and has his own engine dyno built years ago...It will take up to 5000 hp, so a small engine dyno is easy for him....
IN Flagstaff Arizona. USA
In all fairness we dont race or fly dynos.Max rpm horsepower means nothing if its peaky hard to tune etc.I have raced against many pro built dyno tuned engines and left them in the dust with my garage built engine.In fact i still hold a track record here in Arizona thats held up for over 10 years with my garage built engine.Im not defending jc engines as i dont have one.My point is raw numbers mean nothing..If it makes rpm and has great transition then overall it will make a great powerplant.......
Ps i have to add my aerovate twin is a pos. and i do believe it came from the same factory as rc aero engines It has crappy transition and low rpm .i guess i dont know how to twist the needles in my garage.
So then what would you say is a good way to compare engines.
Henry say's that RPM with different props does not show nothing about the engine or does a thrust test with different props, Now a dino is not the way to do it.
So what is the best way to compare. ???
Milton