Thread: What is cavitation?
10-22-2008, 05:12 PM #1
10-22-2008, 05:16 PM #2
Suckin air... heavy vibration Bad wear ring???
10-22-2008, 05:35 PM #3
Actually, there are two negative concerns... cavitation and ventilation.
Sometimes we treat them as the same thing, but shouldn't, as this could hinder us from determining what component is really at fault.
I have an article some where that explains both. It deals with props but can be applied to impellers as well.
Let me see if I can fnd it... be right back.
10-22-2008, 05:41 PM #4
Here it is:
Most likely, as bigdaddyRXP pointed out, you will find something wrong in the pump (bad wear ring, foreign object, bent or chipped impeller), but other items to consider are the pump seal and carbon seal.
Hope this helped. Let us know what you find.
10-22-2008, 05:41 PM #5
IIRC, "ventilation" is the process in which the impeller (or prop) sucks air from the waters surface and the air causes the impeller to spin. This could be caused by the impeller being too close to the waters surface.
Cavitation is a process in which the impeller spinning in water causes the water to boil, which causes the impeller to spin. This could be caused by nicks or other imperfections in the impeller.. Ron
10-22-2008, 05:49 PM #6
10-22-2008, 08:05 PM #7
10-22-2008, 08:19 PM #8
10-23-2008, 05:26 AM #9
does keeping the green nose cone on the impeller prevent this? my ski is a '07 RXP what will have riva stage 1 on it in the spring.
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