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  1. #1

    carbon ring preload

    im experiencing slight cavitation from stop to wot. could it be the accordian boot lost its stiffness, are there shims to tighten it up? its a 03 sportster. thanks


  2. #2
    Gus13letter's Avatar
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    People have done several things to help with this. How many hours do you have on the ski? Is it heavily modified? You will typically see more cavitation on holeshot in higher modded skis.

    Some have used wide zip ties in each of the creases of the boot to stop it from compressing not allowing air to enter, others have just replaced the boot and SS hat, and others like myself have gone to the complete seal replacement - RAD4 seal which requires driveshaft to be machined. Try the first option and see if that helps then move on from there.

  3. #3
    thanks, ill try zip tyes. wont know till spring as i live in MA.

  4. #4

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    Good luck with the zip ties. My ski blew them apart pretty quickly

  5. #5

    Zip Ties

    I tried the zip ties and they blew off too. I heard you can put a zip tie behind the boot which will move it forward and increase tension, but I never tried it.

  6. #6

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    I thought it was my boot at first. So I got a rad4. Got tired of greasing it all the time and went back to the boot. Found out my problem was a worn out wear ring at like 40 hours. No slippage now with the SS Ring from Jerrys Store. Well worth it. Really tight tolerences.

  7. #7

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    I have been running the Zip ties for quite a while it does help. You need the genuine T&B Zipties with the Stainless steel "tooth" in the head.

  8. #8
    Got Boost? psycho rxp's Avatar
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    Quote Originally Posted by Throttlemire View Post
    I tried the zip ties and they blew off too. I heard you can put a zip tie behind the boot which will move it forward and increase tension, but I never tried it.

    I put a zip tie behind the boot to move it fwd long ago, and still holding up well.

  9. #9
    Richieb's Avatar
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    Yep, Tie behind and in front of the boot helps pre-load the seal.

    BUT, you will finally have to do it, so sometimes it is better to bite the bullet.

    Options are replace, change to Sktrk or Rad4 seal.

    Or wonder if the seal will hold-on long enough..!!

  10. #10

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    Look up the thread, RXTX MODS.

    Steve has done a nice job with some plastic tubing around the bellows to stop them moving.

    I think it`s on page 13 of his post.

    Alex..

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