Well, 3lbs of thrust is a lot . Like a whole other .40 glow plane worth.

She had vertical, lots of it, I did not hover, too windy and it WAS the maiden flights.

But first of all , motor health. 6510 vs. 6930 ...which one is healthier for the engine. Heat, stress, spool up time, torque curve. You name it.

I fly the DA-50 on 2 Yaks. EF 87 at 15lbs 8oz....and KMP Yak (Ef Reject) on 18lbs 20z. same prop s but both stock mufflers. Man, even on the 18lb'er it is a rocket. 6930rpm 29.5 lbs thrust.

I am adding a smoker to the Dancer 8oz for the pump and battery box (slimline showtime Pro0..4oz for the tank. Add oil. I bet AUW wet will be 18.5 or more.

I dont know, maybe some cowl off tests are in order, good suggestion . I will post anything I find.

Yes, the 3 pipe Bennett looks great, sounds cool too, not to loud , until you roll it over at yourself and you hear the note changes , and you think the muffler fell of in flight. that's what happened on the second flight, I heard the noise change during a roll and thought it shook loose...it didn't.

Certainly, if you are flying scale and don;t want rocket ship power this Bennett is still more than enough.

We will see. I can't wait for a calm day, tomorrow light and variable is forecast, so I will ring it out with the Bennett. And get a better feel for it. I may go back to a 22x8 for RPM sake with the Bennett.

Slow speed and slow passes are great even in the wind. The 23x8 seemed to act like big brake. making the slow stuff really cool.