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Thread: What will smaller diameter/same pitch prop do?

  1. 03-14-2006, 06:02 PM #1
    HTRDLNCN
    If I got from a 15" 21p three blade to a 13 3/4" 21p three blade what should I expect?
    I am thinking more slip but less drag?
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  2. 03-14-2006, 09:58 PM #2
    Moneypitt
    More RPM, less speed, less engine load, less economy..................MP
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  3. 03-15-2006, 05:14 AM #3
    HTRDLNCN
    Just wanted to know what the operating differences would be.
    My cousin has a ton of props at his shop and for the hell of it I have
    experimented with lots of models but always pretty much the same diameter.
    The other day I ran into a small diameter one with the same pitch as my current prop and thus the question came up.

    Currently the best top speed came with a Mirage 15" x 21P ands the best holeshot/ski prop has been an Alpha 4 blade 14" x 19P .
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