180mm clutch disk BMW vs VW

Discussion in 'GS Boxers' started by hasenwerk, Feb 15, 2010.

  1. mouthfulloflake

    mouthfulloflake Not afraid

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    there are VW aircooled clutch discs available without the sprung for under $20.

    If I bought one and milled the hub down to fit, would this be a frugal 1100GS replacement clutch?
    #21
  2. Poolside

    Poolside Syndicated

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    <BR>
    Link? I'd like to buy one for the hub.


    <BR>
    #22
  3. Rabbitson

    Rabbitson Been here awhile

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    I put a Lucas replacement clutch in mine with the other parts of the BMW clutch kit, much less expensive than BMW or Touratech and (I believe) better than the standard sachs BMW item.


    David
    #23
  4. Rabbitson

    Rabbitson Been here awhile

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    Here's a link on flea-bay if you're interested.

    The material on the clutch is supposed to be superior to the standard BMW item which I've worn out several of.

    HTH,

    David
    #24
  5. Rabbitson

    Rabbitson Been here awhile

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  6. mouthfulloflake

    mouthfulloflake Not afraid

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    #26
  7. Poolside

    Poolside Syndicated

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    <BR>Thanks Lake

    <BR>
    #27
  8. Grad

    Grad Wannabe

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    this is a very interesting thread. is the clutch for the 1100 and the 1200 basically the same?
    #28
  9. chiba

    chiba FYYFF

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    This might sound like a stupid question, but what good is having springs on a clutch disc?

    --chiba
    #29
  10. dancy

    dancy Undescended Testicle

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    I don't think the VW clutch could take the power :D
    #30
  11. hasenwerk

    hasenwerk Long timer

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    I don't think so.. I will snap a photo tonight of the assembled VW clutch.

    Waiting to hear back from my VW clutch builder for a four puck... should be very interesting indeed.
    #31
  12. hasenwerk

    hasenwerk Long timer

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    In theory, less initial shock on the gearbox and input shaft.
    #32
  13. Poolside

    Poolside Syndicated

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    Or the weight&#8194;:lol3


    <BR>
    #33
  14. Poolside

    Poolside Syndicated

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    Exactly, but as Anorak pointed out, the input shaft already has a spring loaded shock absorber built into the gearbox.


    <BR>
    #34
  15. hardybaker

    hardybaker Been here awhile

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    Chiba, The springs on the disc (or clutch plate) absorbs or softens the torsional load as the plate is squeezed (or maybe a better description is, locked-up,) as the pressure plate locks the clutch plate to the flywheel.
    #35
  16. Poolside

    Poolside Syndicated

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    <BR>The clutch hub isn't directly connected to the friction disk mounting plate. When the clutch hub rotates, it pushes on the springs, then the springs push on the mounting plate. It works in both directions.

    Also there is a thin wafer 'wave' spring, the same size as the friction material, mounted under the friction material. The slight cushion reduces engagement grab and chatter.


    <BR>
    #36
  17. Gradall

    Gradall Army of one gets it done

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    I was told that the spring are in the clutch disk to smooth out the pulses of the individual cylinders firing.
    #37
  18. Kevreif

    Kevreif Been here awhile

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    though it may help with the pulses i don't think that is the reason they are in there. every stock clutch i have changed has had them. as said above i think they are in there to lessen the shock on the input shaft and engine, between on/off throttle changes and clutch engagement.

    i replaced the clutch in my dodge cummins with an the aftermarket clutch, the one i put in didn't have springs, and does chatter or buck when trying to back a heavy trailer up a hill. but i think that it is due to the half ceramic friction material, not the lack of springs.

    jsut my .02

    #38
  19. ABuck99

    ABuck99 0.0

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    GB- FYI- It appears from the photos in the TT website that the Ceramic clutch from (Cytech)Tours for Africa is subtly different from the TT ceramic clutch- I dont have a TT style in my hand to confirm it, but I do have one from Cytech I got a few days ago. And from the picture of the TT they are a little different. Either the Cytech( tours for africa)is a knock off, or more likely, Sachs is making it for Cytech, and are making it a little differently for proprietary reasons. Either way- you might not want to say its the same.

    Also the price no longer quite half compared to the TT. The current price is 2800 Rand, which is about $365( at todays exchange rate)+ shipping + exchange rate fees, plus transfer wire fees( all of which Cytech charges you for), which brings it closer to $475 to $500 depending on where you live. Still less than the TT, but higher than originally posted from April 2008 thread.

    Here is a photo of the Cytech Ceramic Clutch:


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    #39
  20. hasenwerk

    hasenwerk Long timer

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    I think, at least just form everything just sitting on the desk, that it will work. There's just a tad more friction surface showing but I don't think it would be that great of a deal...

    [​IMG]
    BMW Disc

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    VW Disc
    #40