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08-11-2003, 03:19 AM

#23

Darwin

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Join Date: Dec 2002

Location: Sacramento, CA,

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Shrike 10 with Norvel AME 25 BB

Hey Charlie / Brian,

I flew the Shrike again today and measured the speed with the club's radar gun. Once again, it was averaging 122 mph (117 to 127), which was exactly what I got with the doppler shift system. I also flew the 12th scale bearcat and it was 5 mph slower than the Shrike, which is not surprising since the bearcat has an 8.5 x 5 prop while the Shrike was running the 8x7 prop. Both planes are running the OS25FX with pipes.

So, based on these experiments, I have confidence that the doppler shift method is a good alternative to the radar gun. Also, it's time to pull the 25FX and drop in the 32SX engine because I think, at this point, its pretty much maxed out with the 25FX.

I will keep you posted...

Darwin

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