Thread: What are cavitation burns ?
05-01-2007, 04:48 PM #1
What are cavitation burns ?
Working on the little things for my wifes XLT1200
Looking in the pump area I noticed the surface of the impeller and the wear ring was very coarse. Does this happen from caviation ? It is very consistent on both surfaces (tried a pic but didnt come out to well). Not deep gouges or damage just coarse. I would bet it as coarse as 80-100 grit sandpaper.
PPK,D-Plate,Chip,Jet Works and 12 x 18.5 all in the works.
05-01-2007, 04:51 PM #2
Correct, that is what causes that. It is air bubbles going across the impeller.
05-01-2007, 04:51 PM #3
That is cavitation. If you take your finger and go across the blade of the prop (like you are seeing how sharp a knife blade is) you will probably feel a knife like edge. Clean the edge of the prop up with a file or a roloc disc to take the sharp edges off. As long as your clearance is good I wouldnt worry about the liner unless it has burn marks in it.
05-01-2007, 05:00 PM #4
05-01-2007, 05:00 PM #5
The tiny bubbles act as sand paper, and over time they create areas in the impeller and other places.
05-01-2007, 05:09 PM #6
If the prop hits all the way around it would probably be a little variation in the prop diameter.
05-01-2007, 05:14 PM #7
may pull it and post a photo...
5 weeks till leg out of plaster so nothing better to do..
05-01-2007, 05:46 PM #8
05-01-2007, 05:50 PM #9
I have a recent "burn-victim" liner. It is special because it illustrates how hot the metal can get. There is actually cracking on the tiny hot spots on the liner, just from the heat.
My camera is loaned out, but I'll get some pics next week or so.
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