Today I had a chance to test my 2 blade 68" diameter Ivo Magnum electric prop at fine pitch about 50". With 3 blades I was getting 4700 (2160 prop) rpm static (2.17 drive). Two blade gave me 5500 static. About 2500 at the prop.
For some reason today, at low rpm the engine was surging up and down, but it was getting dark and I did not do any trouble shooting.
Bulent "Buly" Aliev
FXE Ft lauderdale, FL
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