Chris Cosman wrote:

     > 30" is about right if your joining the rotors together, including the cast
     > iron portion. Less than half the length if it's independent runner. I've done
     > alot of work in this area, 4900rpm. Skip

Probably better to make it adjustable +/- 5 inches.

--
Chris
microcosman.com

Good idea as 30.0 inches might give you too much torque on takeoff
and sacrifice some high end power at 6300 RPM.
I think Ed or Chuck are already seeing something like this as I recall.
Something like going past prop stall on take off.

With a fixed pitch prop I am not sure if you can take advantage
of the longer runners at 4900 RPM.

Paul Lamar

I do not think too much power at static and take off
is a real problem - if you have enogh power to turn
the prop faster you will get more thrust, stalled
section or not - Vance

Ed and Chuck I think were seeing some inexplicable RPM numbers
changing in strange ways during takeoff. Could be aliens from outer space.

Paul Lamar
 
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