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post #4 of Old 12-12-2006
Faster
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Two blades offer less drag, three makes for smoother operation and more thrust.

I've posted this before, but if you're interested in low drag fixed props, check out:
http://www.westbynorth.com/CampbellSailer/

We used a 3 blade version, worked well with much less drag than the conventional "michigan wheel". It replaced a worn out folder.
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