Page 1 of 2 1 2 LastLast
Results 1 to 10 of 13
  1. #1
    RXP rider's Avatar
    Join Date
    May 2010
    Location
    Northern Europe
    Posts
    125

    How to make your carbon seal water cooled

    Hi

    First I would like to say that Iīm from north europe and thats why my english ainīt
    perfect

    I work in a shop where we fabricate a lot of pumps, shaft and many more. From my work I know a lot about shaft and seals. In bigger pumps used in the industry a carbon shaft seal is ofen used. One of the things I know about carbon seals is that THEY CAN NOT RUN DRY.

    My ski cavitated a lot and for that reason I did some testing. I pulled the driveshaft, carbon seal, and the rubber boot on my ski. I quickly noticed the surface of the ss support ring and carbon ring were worn and had burn marks from running dry and hot on the hose. That was what I expected to see. In the workshop I grinded the surface on the support ring and polished it ( see pic ) bought a new carbon ring and and I put it all together again. Fired up the ski ( IN THE WATER ) and ran it without cavitation at all. went home and ran it on the hose ( 1 min ) and launched the ski again and did a test run. This time I had a little cavitation not much but enought to piss me off. Back to the workshop and pulled the driveshaft, carbon ring and support ring again to find the support ring burned on the surface. From that I concluded that the carbon seal canīt run dry AT ALL.

    I grinded and polished the carbon seal and support ring one more time and added a nice mod to my ski. which is a RXP 06. take a look at the pictures

    What I did:

    -Pulled the seat and all the stuff that makes it hard to get to the carbon seal.
    1 Pulled the pump
    2 Pulled the driveshaft, carbon ring and support ring.
    3 Drilled a 6,5 mm hole in the pump tunnel through the hull and through hull bushing.
    4 Cutted a piece of the copper pipe approx 180 mm
    5 Bented the pipe the same angle that I drilled the hole in.
    6 Fill the hole with right stuff to hold the pipe in place and seal arround the pipe
    7 Grate some pieces of fiberglass ( I used 300 g matts ) you would like them to be approx 60 x 60 mm.
    8 Mould arround the pipe ( I cutted some holes on the fiberglass mats ant stuck them on the pipe )
    9 When the fiberglass is dry you can test fit the driveshaft and adjust the copper pipe to spray on the support ring ( see pic )
    10 Before you connect a hose on the pipe, make sure you didnīt filled the pipe with polyester when you slided the wet fiberglass mats over ( I did ) then you will just drill the opening on the pipe with a appropriated size drill.
    11 Find your hose that goes from the garden hose adapter and to the j-pipe ( the small hose conntcted on top of the j-pipe )
    12 Cut the hose approx on the mittle and insert a T-piece ( your t-piece must have
    2 x 12 mm connectors and 1 x 6 mm )
    13 fine the hose that you just connected to the copper pipe and let it go up on the top of the engine or a place where you can reach it. Cut it there and insert the petrol tap with stainless steel clamps
    14 Cut a piece of hose and let it goes to the t-piece on the small hose to j-pipe
    15 put your ski togheter and you are ready to go

    That way you have a watercooled carbon seal that will cool down the carbon ring and lube it when you run it on the hose. Remember to turn off the fuel tap before you launch the ski or water will fill the j-pipe.

    Pleace notice that in the pic I donīt installed the fuel tap on the hose becouse the pic were from I test fitted it all.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	IMG_1131.jpg 
Views:	87 
Size:	67.4 KB 
ID:	234015   Click image for larger version. 

Name:	IMG_1132.jpg 
Views:	72 
Size:	61.4 KB 
ID:	234016   Click image for larger version. 

Name:	IMG_1130.jpg 
Views:	76 
Size:	64.8 KB 
ID:	234017   Click image for larger version. 

Name:	IMG_1133.jpg 
Views:	83 
Size:	114.3 KB 
ID:	234018   Click image for larger version. 

Name:	IMG_1134.jpg 
Views:	69 
Size:	85.4 KB 
ID:	234019   Click image for larger version. 

Name:	IMG_1136.jpg 
Views:	71 
Size:	114.2 KB 
ID:	234020  

    Click image for larger version. 

Name:	IMG_1137.jpg 
Views:	72 
Size:	60.2 KB 
ID:	234021   Click image for larger version. 

Name:	IMG_1138.jpg 
Views:	70 
Size:	116.8 KB 
ID:	234022   Click image for larger version. 

Name:	IMG_1141.jpg 
Views:	92 
Size:	120.5 KB 
ID:	234023   Click image for larger version. 

Name:	IMG_1139.jpg 
Views:	131 
Size:	122.2 KB 
ID:	234024  


  2. #2
    RXP rider's Avatar
    Join Date
    May 2010
    Location
    Northern Europe
    Posts
    125
    Click image for larger version. 

Name:	IMG_1173.jpg 
Views:	96 
Size:	130.7 KB 
ID:	234035Click image for larger version. 

Name:	IMG_1174.jpg 
Views:	85 
Size:	128.4 KB 
ID:	234034Click image for larger version. 

Name:	IMG_1165.jpg 
Views:	92 
Size:	82.7 KB 
ID:	234033Click image for larger version. 

Name:	IMG_1166.jpg 
Views:	82 
Size:	92.8 KB 
ID:	234032Click image for larger version. 

Name:	IMG_1155.jpg 
Views:	94 
Size:	114.3 KB 
ID:	234031Click image for larger version. 

Name:	IMG_1154.jpg 
Views:	94 
Size:	116.0 KB 
ID:	234030Click image for larger version. 

Name:	IMG_1152.jpg 
Views:	99 
Size:	120.1 KB 
ID:	234029Click image for larger version. 

Name:	IMG_1150.jpg 
Views:	86 
Size:	68.9 KB 
ID:	234028Click image for larger version. 

Name:	IMG_1149.jpg 
Views:	84 
Size:	83.0 KB 
ID:	234027Click image for larger version. 

Name:	IMG_1148.jpg 
Views:	75 
Size:	116.2 KB 
ID:	234025

  3. #3
    RXP rider's Avatar
    Join Date
    May 2010
    Location
    Northern Europe
    Posts
    125
    Click image for larger version. 

Name:	hane.jpg 
Views:	64 
Size:	20.5 KB 
ID:	234036

  4. #4
    speedskixp's Avatar
    Join Date
    Feb 2008
    Location
    venice fl.
    Posts
    8,117
    +1
    120
    Great idea. I've often thought of doing something similar but never have. They should come from the factory with something like that. Nice work. hope it works out for you . As long as there is no air in the cooling system to create cavitation I dont see why it wouldn't work.

    ---------- Post added at 01:20 PM ---------- Previous post was at 01:20 PM ----------

    Quote Originally Posted by RXP rider View Post
    Click image for larger version. 

Name:	hane.jpg 
Views:	64 
Size:	20.5 KB 
ID:	234036
    Forget the comment about air in the cooling system. LOL The valve will take care of that.

  5. #5
    If i knew,...I wouldn't ask sea-one's Avatar
    Join Date
    Aug 2009
    Location
    Dallas/Waxahachie
    Posts
    2,340
    +1
    109
    Man that looks risky for cavitation to me... jmo

  6. #6
    speedskixp's Avatar
    Join Date
    Feb 2008
    Location
    venice fl.
    Posts
    8,117
    +1
    120
    Quote Originally Posted by sea-one View Post
    Man that looks risky for cavitation to me... jmo
    That was my fist thought too but as long as it's sealed up good and strong and the valve is off it should be good IMO. However, there is alot of possitive and negative pressure going on to consider.

  7. #7
    RXP rider's Avatar
    Join Date
    May 2010
    Location
    Northern Europe
    Posts
    125
    I have tested it with no cavitation at all. The only possibel way to get cavitaion is if there is a leak between the pipe and hull or a bad vavle right ? I even pulled the driveshaft and carbon ring when I had flushed it 5 times on the hose for a longer periode and the carbon ring og support ring are like new

  8. #8
    R88ory RXP's Avatar
    Join Date
    Feb 2008
    Location
    Kent, England
    Posts
    2,737
    +1
    46
    good job, looks cool.

    R88

  9. #9
    JPR's Avatar
    Join Date
    Mar 2007
    Location
    Down under
    Posts
    934
    +1
    53
    nice work, thats pretty clever !

  10. #10
    SLASHER's Avatar
    Join Date
    Jun 2007
    Location
    Australia, Perth WA
    Posts
    3,263
    +1
    474
    Quote Originally Posted by jaffabas View Post
    nice work, thats pretty clever !

    I great simple idea ...well done ...

Page 1 of 2 1 2 LastLast

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Replies: 44
    Last Post: 05-14-2016, 11:25 PM
  2. Replies: 0
    Last Post: 04-11-2013, 05:50 PM
  3. How To Make Your Own T Handle Carb Screws
    By Cutlass in forum Yamaha How To & FAQs
    Replies: 5
    Last Post: 01-09-2011, 08:50 PM
  4. How to Make Your 4Tec Start and idle Like Stock
    By PWCGUY in forum Sea Doo ECU Support
    Replies: 6
    Last Post: 10-17-2010, 11:05 PM
  5. How to make your own rrfpr?
    By Thegaragejavea in forum 4-Tec Performance
    Replies: 2
    Last Post: 02-17-2009, 02:16 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
  •