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Thread: Do all rsv's have a slipper clutch

  1. #1
    Baby Twin blaster rsv's Avatar
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    Angry Do all rsv's have a slipper clutch

    hi all does anyone know if all rsv mille have slipper clutches i thought they did but apparently im wrong.

  2. #2
    Evil Twin RSV-TWIN's Avatar
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    Haynes say all from 98... i remember Bike mag said from 2001+ !?

    its called a PPC - Pneumatic Power Clutch !!

    so not a real 'slipper clutch' !!

  3. #3
    Graveltrap
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    I've never ridden a Mille older than the final (03) model, but if that has a slipper clutch, it's not very effective on track. My 05 RSVR has a much better set up.

  4. #4
    Mini_Me
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    All the RSV/Tuno/Falco bikes have the same type PPC slipper clutch. So also the early ones.

    It should work ok, if not working ok it needs checking out.

  5. #5
    LEGS
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    The common fault is the one way check valve that fails. Easily replaced and is about 10 from Aprilia

  6. #6
    One Liter Duc Eater RSVkwackers's Avatar
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    if you blip the throttle on downshifts in negates the ppc.as far as i know they are fitted on all rsv's

  7. #7
    pieman
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    you need to be off the throttle or the vacuum won't work it. All it does is suck 3 of the clutch plates off the pile.

    I know i sound really knowledgeable but it's only recycled from what griff told me lol.

  8. #8
    Mini_Me
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    There is not a fixed number of plates that disengage. The slipper clutch sumply 'pulls' the clutch rod. This in term results in the pressure plate being lifted slightly.

    Because the clutch pressure plate is lifted slightly there is less perssure on the plates resulting in less grip. Less grip means they slip easier 'et voila' you have s slipper clutch type system.

  9. #9
    OZMILLE
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    Quote Originally Posted by RSVkwackers View Post
    if you blip the throttle on downshifts in negates the ppc.as far as i know they are fitted on all rsv's
    I have always blipped the throttle on mine, whooopps!!

    So youre telling me that you just bang down the box (keep it clean here fellas ) and dont even blip the throttle at all

    Cheers Pete

  10. #10
    LEGS
    Guest
    I do sometimes in normal riding conditions but the "slipper clutch" will only work on a fully closed throttle. Through twisties you really want to be keeping that throttle fully closed on down changes. If you've ever had a moment when the rear locks momentarily on corner entry you'll know what i mean
    Last edited by LEGS; December 19th, 2009 at 01:56 AM.

  11. #11
    Dolenc
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    Blipping the throttle is still better if you do it properly.

    But the wheel wont just lock up in any situation, it usualy happens when you brake realy hard and the rear wheel looses traction a bit, combined with down shifting on high revs your rear tyre locks up and it dances a bit.

    But its a scenario for the track, on the street it wont happen since roads are more fluid and you never brake that hard for a corner entry, so bleeping or worrying about lockups on the street its useles.

  12. #12
    LEGS
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    sorry dolenc but i disagree

  13. #13
    Evil Twin RSV-TWIN's Avatar
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    it might depend on the gearing & how harsh it reacts... on standard gearing 17/42... the wheel felt like it might lock going down a gear when stopping for a red light rapidily... but now the 16/43 isnt so harsh... though i wouldnt like to bang it down 2 or 3 gears... i just use the slipper reaction to go down one gear @ a time !!

  14. #14
    Dolenc
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    Quote Originally Posted by LEGS View Post
    sorry dolenc but i disagree
    Well thats why forums exists, to share opinions

    How many lockups did you had on the street and under what condition?

    Because I admit I didnt have a single one and also on the track I exacly know when it will happen and how hard do I have to push it to happen

    Except efcorse on a raini day, or a realy slippery surface and cold tyres, but it would slip no matter what, its a v twin afterall

  15. #15
    camngetit
    Guest
    had mine lock up twice both times coming to a stop at a junction going into first this was on a sunday morning blast not going to work nothing major but the back came out and the clutch lever went in ,might have to check the valve . to say you dont need it on the road is a sweeping statment how many times have you used your abs on the car very few i bet so would you take it off so it did not work

  16. #16
    Evil Twin superyellow's Avatar
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    yes and it works like a charm for aggressive riders with a hello kitty sticker on his bike!

  17. #17
    Baby Twin Grady's Avatar
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    I've always ridden GSXR's before I had the RSVR, and I have ALWAYS blipped the throttle. Some of my bikes have had slippers, some of my bikes have had regular clutches (that includes my race bikes). I have always blipped the throttle while downshifting. I do it nearly every single gear on the street.

    Granted I have never taken the RSVR on the track, I can't imagine not blipping the throttle. I feel like it would be teaching me bad habits, and I don't see how that could possibly be more effective than blipping while downshifting (when done properly of course).

    You mean to tell me, that if you have the RSVR in high rpm's, that regular downshifting won't make the rear wheel dance? I have had it in high RPM's and downshifted (sporting around on the street) and have yet to have the rear dance on me.

    A lot of the time, riders while blipping the throttle just let the clutch out instantly after clicking down on the shift lever. From the race schools I have attended (and from a sheer practical sense) you're supposed to let the clutch out slowly; allowing it to slip while downshifting.

    My '97 GSXR 750 (the on in my avatar) had kevlar friction plates in it. You better believe that I ran that motorcycle hot into corners, downshifting at extremely high rpm's. The phrase "slipper clutch" was merely a figment of one's imagination back then.

    I'm not arguing here, but maybe I'm missing something. Please correct me if I'm wrong, but I will, and always have, strongly advised blipping the throttle; no matter what technology. I have used both old and new style systems and blipping has performed flawlessly on both. I don't see how an Aprilia with a PPC system could honestly be that much different .

    Sorry to go off on this little tangent, but this struck some curiosity in me and I'd like to know what others think on this topic.

  18. #18
    pieman
    Guest
    i agree with some of what your saying and blipping the throttle has always made a lot of sense to me, even in my car! But. . . . I can also see how the 'slipper' clutch works on the mille and it won't work if you blip. But then it won't matter any way will it? It doesn't really make sense why they bothered. I haven't managed to get on track with it yet though.

    One thing that i remember reading on here though is someone saying that you shouldn't blip too hard or it does damage? So perhaps the slipper clutch is specially designed for ham fisted people?

  19. #19
    Dolenc
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    If you blip too hard the bike will jump a bit foward when you let go of the clutch, but wont do any damage.

    Also Grady mentioned to let go of the clutch slowly, well yes on the street thats what I also do. But when blipping you have to let go, otherwise you loose all the revs and you havent done anything
    Also clutch gets worn for nothing.

    Dont get me wrong Im not defending that sliper clutches or blipping is bad, I love it

    But be real, the wheel wont lock bellow 7-8k rpm, also the slipper doesnt work like it should below this rpm range(not enought vacum) and how many times you "hot brake" for a corner and bang the gearbox down on this rpm on the street. Its a v twin not a l4 600cc machine.

    I also do it on the street, to practise, but I do realise that it wont lock and it doesnt matter how racey I feel

    And to anwser the question, yes, most rotax engines on aprilias, all rsv, rsvr, tuono, futura, falco, caponord...
    Last edited by Dolenc; December 23rd, 2009 at 01:52 AM.

  20. #20
    One Liter Duc Eater Spud monkey's Avatar
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    I know my rsv has one if these vacuum slippy things but it's not a real slipper clutch. I also blip the throttle to smooth things out when I'm riding but I'm also glad of the slipper clutch because were not perfect and every now and again we make a cock up. I know this little device has saved me some embarrasing moments over the years, just now and again.

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