Results 1 to 9 of 9
  1. #1
    mrbtd's Avatar
    Join Date
    Jul 2005
    Location
    Lindenhurst, Illinois, United States
    Posts
    4,309
    +1
    2

    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.


  2. #2
    800AMSOIL4U's Avatar
    Join Date
    Aug 2006
    Location
    Morgan Hill, CA
    Posts
    5,024
    +1
    132
    Correct, that is what causes that. It is air bubbles going across the impeller.

  3. #3
    My son (mohawk man) jeffsntx's Avatar
    Join Date
    Sep 2006
    Location
    Belton TX
    Posts
    2,598
    +1
    1
    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.

  4. #4
    Hydrotherapy's Avatar
    Join Date
    Sep 2006
    Location
    The Rock
    Posts
    3,347
    +1
    17
    Quote Originally Posted by jeffsntx View Post
    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.
    had to work the prop carl sent me as it was rubbing a tiny ammount ...and if there are burn marks still appear after this work???

  5. #5
    Water Bum Rodneyae's Avatar
    Join Date
    Dec 2006
    Location
    Roanoke, Va
    Posts
    3,083
    The tiny bubbles act as sand paper, and over time they create areas in the impeller and other places.

  6. #6
    My son (mohawk man) jeffsntx's Avatar
    Join Date
    Sep 2006
    Location
    Belton TX
    Posts
    2,598
    +1
    1
    Quote Originally Posted by saltygpr13 View Post
    had to work the prop carl sent me as it was rubbing a tiny ammount ...and if there are burn marks still appear after this work???
    I dont really understand the question. If the liner was burned it probably needs to be replaced because it will continue to do so in the same spot but faster than before. signs of a burned liner would be that the prop will only hit in certain spots.

    If the prop hits all the way around it would probably be a little variation in the prop diameter.

  7. #7
    Hydrotherapy's Avatar
    Join Date
    Sep 2006
    Location
    The Rock
    Posts
    3,347
    +1
    17
    may pull it and post a photo...


    5 weeks till leg out of plaster so nothing better to do..

  8. #8
    Moderator RX951's Avatar
    Join Date
    Apr 2005
    Location
    League City, Texas
    Posts
    16,066
    +1
    23
    Here is a good thread over Cavitation. It is amazing how tiny little bubbles can destroy metal.

    http://www.greenhulk.net/forums/showthread.php?t=7438


  9. #9
    Hydrotoys's Avatar
    Join Date
    Jul 2005
    Location
    Mesa, AZ
    Posts
    16,712
    +1
    85
    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.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. What are the symptoms of an overly worn wear ring? (Or cavitation?)
    By bgaidan in forum Polaris Open Discussion
    Replies: 4
    Last Post: 05-31-2010, 10:13 PM
  2. What are your mod and results
    By Jrsrxp in forum 4-Tec Performance
    Replies: 33
    Last Post: 12-17-2007, 08:20 PM
  3. What are the current records of the fastest ski's??
    By Therock in forum 4-Tec Performance
    Replies: 14
    Last Post: 05-20-2007, 06:39 PM
  4. What are you guys doing with stock parts off your ski?????
    By Jrsrxp in forum 4-Tec Performance
    Replies: 15
    Last Post: 09-30-2005, 05:57 AM
  5. What are these
    By Lurker in forum 4-Tec Performance
    Replies: 4
    Last Post: 08-14-2005, 04:01 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •