ORIGINAL: glasscock
Chris,
I tested two props today. Results: 9x6=17410, 9.5x6=16600. Did not try the 10x6, but I'd guess it be just short of 16k. BTW, I felt the 9x6 performed better for me in the air today than the 9.5. These are all APC sport props. Any reason to use or not use an APC ''pylon'' or competition prop?
DaveG
In my experience the APC pylon props (D-1 series) are quite inefficient below about 17K. Whip them beyond 19K and these little buggere pull like angry 8.75" freight trains.