Thread: Sanding Polished Impeller?
07-15-2012, 11:51 AM #1
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.
07-15-2012, 03:29 PM #2
Anyone? Done with the transom, just waiting to see if there's an advantage to a rougher finish on the prop.
07-15-2012, 03:35 PM #3
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...........
07-15-2012, 03:39 PM #4
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.
07-15-2012, 03:58 PM #5
What you call "grip", others call drag. But at such high rpm's it shouldn't make a difference either way
07-15-2012, 05:41 PM #6
I can see polished helping at high RPM's, I was thinking maybe a rougher finish would help with cavitation out of the hole.
07-15-2012, 05:51 PM #7
The only way I could see it helping is by reducing efficiency, less thrust=less cavitation.
07-15-2012, 06:02 PM #8
Maybe so. I left it alone and stuck it back in.
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