Mike Wills wrote:

  For all you guys currently flying, particularly RV guys

with 2.17:1 PSRU

ratios. I'm getting ready to order a prop and the

manufacturers are asking

questions about desired prop RPMs at various performance

points. Before

responding with uneducated guesses I thought I'd ask the

group for their

numbers. Could you all please respond with the following:

1) Max RPM

5700 @ 153KTS

2) Max Cruise RPM

5700 @ 153KTS

3) Economy Cruise RPM

5000 @ 140 KTS @ 7500MSL

4) Static RPM

4800 to 5200 depending on Barometric pressure, phase of moon, etc.

  Also specifically for the RV guys it would be helpful to

know what TAS

(at what altitude?) you have at data points 1 - 3 above.

And if there's

anything else you can think of that may be helpful please

add that as well.

Thanks,

Mike Wills

Mike, I inserted my data above. Numbers are engine RPM's, divide by 2.17 for
prop RPM's
I have a Performance Props 70x70.
At this point in time, I would like more RPM (less pitch)

Chuck Dunlap
RV6

 
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