Originally Posted by aspeed
Ya it is a D# on the pitch pipe. You could tell it was unloading a lot in the air. I can't check that without being inside the circle. The bigger, higher pitched props unload more in the air. Still, a 3" pitch would end up at maybe 55 mph. I didn't check your lap times, and wouldn't know without a speed chart. It looked pretty fast to me. Everyone that gets over 20,000 rpm has to reset the socket and don't go a whole lot faster. You need a stopwatch to see, but it isn't serious like Mouse Racing or anything?..
I used the video to time it for two flat laps, the only consecutive low flat laps I could find before it started fuel starving. From 1:24 to 1:30 I turned two flat laps, so 3 second laps at 40' plus about 26" of my arm ~ 42'. I'll try to do the geometry figure out the speed. Or find a chart. I'm just curious now.
EDIT: so over 6 seconds it traveled 527 feet(2 laps). If I did the math right, that comes out to 59.9mph. I'll try to double check that.
I think the plane's AUW is about 7.5 ounces, 8oz with fuel.