"Bass, Jerry" wrote:

Lonnie Prince answered my question about the Max Rpm of a 68" diameter

prop.

He says 3089 with his P Tip.  That would make my engine turn 8800 rpm.

I

was getting 7200 yesterday on my 68x 76"

Jerry Bass

Hi Jerry,

Hope you understand that the discussion on props & redrive ratio is mainly
for good clean academic fun and that you should probably just ignore it and
enjoy flying your plane :-)  By the way, could you give us some airspeed
measurement points with the prop rpm data?  What do you get for static rpm,
full throttle climb rpm, full throttle top speed rpm, etc?

Tracy Crook
tcrook@rotaryaviation.com
www.rotaryaviation.com

Face it Tracy! You are going to have to provide this 2.85:1 option sooner 
or later :-)

Paul Lamar
 
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