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  1. #1
    64physhy's Avatar
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    Sanding Polished Impeller?

    I remember reading somewhere on here that if you sand a polished impeller, it helps reduce cavitation, but I can't find anything about it when I search. Is there any truth to this, and if so, how would I go about it? I have a skat-track done by Rius that is highly polished. I have it out right now because I'm modding my transom plate, and figured it would be a good time to do it if it will help.


  2. #2
    64physhy's Avatar
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    Anyone? Done with the transom, just waiting to see if there's an advantage to a rougher finish on the prop.

  3. #3
    Formerly Ultra250 TN Aquaholic6801's Avatar
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    From my experience the "race finish" doesnt help......seems most aftermarket props are race finished though...think its more of a visual thing to the buyer...........

  4. #4
    64physhy's Avatar
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    Yeah, that seems to be what I'm finding. I just read on the Impros site where they say it doesn't make a difference. Seems like a rougher finish would give it more "grip" instead of smoothly cutting through the water.

  5. #5
    KawiMike's Avatar
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    What you call "grip", others call drag. But at such high rpm's it shouldn't make a difference either way

  6. #6
    64physhy's Avatar
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    I can see polished helping at high RPM's, I was thinking maybe a rougher finish would help with cavitation out of the hole.

  7. #7
    KawiMike's Avatar
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    The only way I could see it helping is by reducing efficiency, less thrust=less cavitation.

  8. #8
    64physhy's Avatar
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    Maybe so. I left it alone and stuck it back in.

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