Tracy, if you have the data could you give us the  RPMs you saw at the 205 and 217.5 air speeds?

Dennis H.
Renesis RV-7A
Austin, Tx.

That was 209 and 217.5   

the 209 mph speed was with the 2.176 drive turning a 68 - 71 prop with engine turning 6300 , mixture leaned to 17 gph.  On other occasions I could push it to 6400 at best power mixture burning 20 gph.

The 217.5 mph was with a 2.85 drive turning a 74 - 88 prop with engine turning 7250.  I didn't get a good read on the fuel flow but obviously it would have been higher.  I remember requesting priority landing after the race due to low fuel.  

Neither run was done at best power mixture but leaned a few gph less than max.

Tracy