Richard Sohn wrote:

Scott,
I was in your situation a year ago.
Aircraft: AVID Heavy Hauler
FW fwd: 100HP SUBARU with 2.62:1
Based on my own analysis, I determined that the best prop would be a 76"
dia. , 3  wide blade and ground adjustable.
The only manufacturer getting close to this requirement was PowerFin with
75".
I had the first indication of a good choice last week on the first flight,
it is a power house.
For your application, I would go with the same prop but 4blade. Your power
density will be somewhat better with a slightly higher tip speed, provided
your engine turns at 6500RPM.
I hope you have room for that prop.
Richard Sohn.
www.gdsys.net/WWWmembers/unicorn/

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