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Thread: slipper clutch valve broken AGAIN

  1. #1
    One Liter Duc Eater
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    Thumbs down slipper clutch valve broken AGAIN

    As the title says. This is the second one thats broke . The rubber bit inside tears, poxy pieces of shit. Theyre obviously not up the the job. I dont blip the throttle downshifting so it gets used but it should be able to do its job without falling apart . Im going to see if i can find a more robust valve to replace it.

  2. #2
    Superbike Twin Arryace's Avatar
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    i use two fingers on my left hand as my slipper clutch haven't failed me yet

  3. #3
    One Liter Duc Eater
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    Quote Originally Posted by Arryace View Post
    i use two fingers on my left hand as my slipper clutch haven't failed me yet
    Fair enough.
    Im not saying im not careful, but if its there then it should work.
    If it doesnt work then the whole mechanism is rendered unnecessary ballast, redundant.

  4. #4
    Baby Twin
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    let us know if you find a suitable alternative

  5. #5
    One Liter Duc Eater
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    OK, ive been riding without the check valve since starting this thread.
    I just bought some cheap fish tank check valves and wil see if theyre up to the job. Nothing ventured, nothing gained.
    http://www.ebay.co.uk/itm/5-Aquarium...item3f09c735b9
    This type doesnt have a rubber bit inside to tear. It isnt a direct fit, the pipes are a bit too big that it pushes into.
    Im not paying 15 every few months for the genuine aprilia item when its a poxy piece of shit.

  6. #6
    Evil Twin
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    my slipper clutch dont seem to work either ?

    i dont have oil in the airbox bar a little id expect from the breather so mines probably fooked too ?

  7. #7
    One Liter Duc Eater
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    Quote Originally Posted by lonner View Post
    my slipper clutch dont seem to work either ?

    i dont have oil in the airbox bar a little id expect from the breather so mines probably fooked too ?
    I think its debatable how well the PPC clutch works when it is working properly.
    The only way youd get oil in the airbox from the clutch is if the diaphragm the vacuum act on has split.
    Have you blown through the check valve to see if it still works?
    Last edited by The Lone Ranger; January 21st, 2012 at 05:30 AM.

  8. #8
    Evil Twin
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    no but i shall have a look just to see (its not a big issue if the slipper is poor as im used to twins and there fierce deceleration )

    diaphragm is fine .

    but i like all things to work as they should much to my wallets disgust or or should that be the wife's lol
    Last edited by lonner; January 21st, 2012 at 05:38 AM.

  9. #9
    Baby Twin
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    I had some oil in my 07 airbox, and I've had the rear lock on me a couple of times down shifting before roundabouts.... so what does this say ... the the valve doesn't work and that's how the slipper works...Sorry new to such "slipper things"

  10. #10
    One Liter Duc Eater
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    Oil in the airbox is nothing to worry about.
    The PPC clutch in the RSV isnt a true slipper clutch and I dont think it works very well, so youre still going to get lock ups with hard downchanges.
    I dont think that the PPC clutch is an Aprilia thing, I think its a Rotax thing because the Rotax powered Buell 1125 has a similar system called the HVA clutch. This diagram i found might help explain things -

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