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Thread: Rear wheel lock up

  1. #1
    Baby Twin tony.tt.rsv's Avatar
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    Rear wheel lock up

    Why does my rear wheel keep locking up on down shifts? I thought the rsv had a slipper cluch fitted, i had no problems last year and i was not bliping the gas.
    I've just change the gearing to 15/43 could this be anything to do with it?

    Its ok if i blip the gas on the down shifts.

    By the way 15/43 what a big diference its like a supermoto on the accelirasion fcuking love it apart from the rear wheel lock up.

  2. #2
    V_senna
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    its probs the gearing yeah, it'll only lock up for a split second then release again, just have to keep on the blippin

  3. #3
    AMA Pit Boss
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    It could be that the one way valve in the vacuum tube going to the clutch has failed ......if you can disconnect it, if you can blow through (ooh err) either end then its duff.

  4. #4
    Baby Twin tony.tt.rsv's Avatar
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    thanks kiwi any picks of where this pipe is?

  5. #5
    AMA Pit Boss AREESSMILL's Avatar
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    Quote Originally Posted by tony.tt.rsv View Post
    thanks kiwi any picks of where this pipe is?

    Yeah Scott disconnect it and show us how you suck it lol

    Tony

    Its connected to the Clutch cover which is located on the right hand side of the bike, also worth checking that the diapraghm hasnt split.

  6. #6
    AMA Pit Boss
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    Oh Timothy ...........you are far better at it than I am , come on now's not the time to be shy

    [QUOTE=AREESSMILL;81679]Yeah Scott disconnect it and show us how you suck it lol

    QUOTE]

  7. #7
    amb67
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    Look at Tim with his technical advice posts.

    You been at those technical pills again Tim?

  8. #8
    AMA Pit Boss AREESSMILL's Avatar
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    Yeah Im starting to surprise myself

    perhaps I should put a discalimer at the bottom of all posts that I dont hold responsibility for the users actions lol

    Ps quiet on here tonight

  9. #9
    LEGS
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    One way check valve failure was quite common on pre 03.5 bikes. I bet half the bikes out there have a faulty one as the owners are unaware. As Areeessmille says locate and check the valve but note which way the arrow is pointing before you take it off. It a small plastic cylindrical canister about 2 inches long with a large vaccum pipe coming out of each end. It'll be located above the clutch on the right hand side ( as sat the bike ) of the engine. Remove both pipes and if you can blow through the valve both ways then the valve has failed. They are about 9.00 from Aprilia

  10. #10
    Baby Twin tony.tt.rsv's Avatar
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    cheers legs took it out today and gave it a blow lol.

    i could blow both ways but i gave it a tap and it seems ok now.

    while i had the tank up i thought i would change the spark plugs, simple job i thought but one of the bastard ht cap was solid on the plug.
    had to cut it off in the end, new set of them now.
    looks like the plugs have never been change.
    bit pissed of as i was going out for blat today, as it was a nice day,abit rare on isle of man this time of year .
    its one thing after another whith these bikes.
    forks are leaking now aswell.
    arr that feels better.
    thank you again

  11. #11
    amb67
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    They are akin to a supermodel.

    They look stunning but fuck are they high maintenance, but we still love them.

  12. #12
    AMA Pit Boss AREESSMILL's Avatar
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    Hi Tony

    Im off to the TT this year perhaps we could have an Aprilia Meet up somewhere??

  13. #13
    IanG
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    Quote Originally Posted by kiwi_rsvr View Post
    It could be that the one way valve in the vacuum tube going to the clutch has failed ......if you can disconnect it, if you can blow through (ooh err) either end then its duff.
    Excuse the (probably) stupid question,but if you hold the clutch IN with engine running in neutral and gently blip the throttle should you feel a slight "pulsing " at the lever?

    I hope it just means the pneumatic thingy is working?

    Ian

  14. #14
    A303
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    Quote Originally Posted by IanG View Post
    Excuse the (probably) stupid question,but if you hold the clutch IN with engine running in neutral and gently blip the throttle should you feel a slight "pulsing " at the lever?

    I hope it just means the pneumatic thingy is working?

    Ian
    I occasionally notice a bit of a pulsing through the lever Ian, suppose it must be due to the vacuum system now you mention it. Managed to lock mine up last time I was on track - not sure if mine's not working or it's just a crap system. Another job to do.

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