Wilbers-BMW: 0-1

Discussion in 'GS Boxers' started by tagesk, Jun 30, 2013.

  1. tagesk

    tagesk Tuscan rider

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    [​IMG]

    The Wilbers is a few millimeters narrower. This means that over the years the bushing inside the swing arm has moved
    to the right (making the gap narrower.
    To get the original shock back on I needed to push it back; the question is: How to do so road-side?

    Use the upper bolt from the shock, add one of the cones from the wheel bolts, and press it back.
    Works well!

    [TaSK]
    #21
  2. Schlug

    Schlug JockeyfullofBourbon

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    put something on and stay in that position.
    nice work!
    #22
  3. walrond

    walrond Earth Wanderer

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    Thank you VERY much for pointing this out. I was pulling my Wilbers for a rebuild and putting the stock parts back and couldn't get the BMW shock back in. I remembered that you just posted this and voila, by using your suggestion the problem was solved! :D

    By the way.... www.motorglobe-wilbers.it will rebuild both shocks for 205.00 Euro including shipping.


    #23
  4. Basic_Gerd

    Basic_Gerd Gerd

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    #24
  5. tagesk

    tagesk Tuscan rider

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    Ladies and Gentlemen,
    May I be so bold as to decleare Wilbers, by their representative Triple Tuning, to this years winner of Customer Service.

    The paperwork simply says "Guarantee" (in German, obviously).

    I shipped the broken shock to them, attaching a letter describing what had happened, and the service history.
    As the shock had 200.000 km on it after six years of service, I did not make any demands. Not for a new shock, not for a free repair, nothing.
    Still, Wilbers stepped up to their product, and I have in my hand a new shock.

    I am humbled by Wilbers.

    [TaSK]
    #25
  6. Woland

    Woland Wannabe adventurer

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    Good for you!

    Always nice to be positively surprised. Makes me feel all warm inside about the Wilbers I'm about to mount on my R.

    Let us both celebrate Wilbers with a ride and a nice lunch, altough I bet both your ride and lunch will be better than mine ;)
    #26
  7. Kazky

    Kazky Adventurer

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    They do that?...
    Now thats what you called excellent aftersales service.
    How long does it take?

    Yea a good lunch with a couple of hooters will be nice.
    #27
  8. tagesk

    tagesk Tuscan rider

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    I took me a week to wrap the shock and find time to go to the Post office.
    Two weeks later, a new shock is delivered to my door.

    [TaSK]
    #28
  9. Emoto

    Emoto Sure, why not?

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    Wow, that is great! Good to know they back their products.
    #29
  10. ausfahrt

    ausfahrt mach schnell

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    So the days of manufacturers standing behind their products are not entirely behind us? Fantastic!

    I can't help but wonder though, if the fact that the problem was posted on this forum, affected BMW's decision to send you a new shock.
    #30
  11. JustKip

    JustKip Long timer

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    Wilbers isn't affiliated with BMW. They are a completely different company that only makes shocks.

    Yacugar uses the same basic design, but with a 16mm shaft vs 14 mm for Wilbers and Ohlins, specifically to address the problem mentioned in this thread.
    #31
  12. tagesk

    tagesk Tuscan rider

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    Wilbers, not BMW.

    I haven't mentioned to Wilbers that this thread exists, and it is unlikely that they know.

    Recall that I didn't make any demand of them. I offered to send them the shock for inspection, as a complete breakdown such as I experienced should not happen. I did not conceal that the shock was six years old and has been with me for about 200.000 km.
    I did not ask for a new shock, I did not ask for free service of the old, nor did I imply faulty workmanship of any kind.

    They responded by sending me a new shock.
    I find that extraordinary, no less.

    [TaSK]
    #32
  13. ausfahrt

    ausfahrt mach schnell

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    I meant Wilbers, my bad.

    I just love happy endings. :clap
    #33
  14. kinkster

    kinkster Been here awhile

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    before reading this thread I was thinking of putting Wilbers on my 13 GSA, NOW I know I am installing Wilbers after seeing customer service like that!:norton:D
    #34
  15. Thunder Pig

    Thunder Pig Been here awhile

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    I'll second that! I also like that the body of the shock is steel so the oil stays cleaner longer and don't have to service as often. Now have to start saving my nickels so when warranty is up I will be ready! If the stockers fail hopefully will be right before warranty is done so I can have a new set of shocks for it when it gets sold.
    #35
  16. lhendrik

    lhendrik Truffle Rustler

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    Hmm. While I agree it is great that Wilbers stepped up with a replacement shock, I would rather not have one fail and leave me stranded or dead, so I may have to go with the larger shaft. A bigger shaft is always better....
    #36
  17. fred flintstone

    fred flintstone Been here awhile

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    Actually this is not true (at least with shocks) there are trade offs. Fixed piston size, larger shaft means less volume of oil below the piston, all other thing equal, so more stroke required for a given level of force, and also less max damping force.

    It is complicated but basically there are good reasons why a given shaft size is what it is, and not always as big as possible. The oil has to go somewhere to let the piston move through it to create damping force. The shaft diameter displaces a lot of oil, different amounts at different stroke positions. Think about the hydrolock if there were no gas reservoir. Then there's the whole materials side of it.

    BTW great to see a manuf like Wilbers step up and take care of an issue like this.
    #37
  18. Schlug

    Schlug JockeyfullofBourbon

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    put something on and stay in that position.

    There are also good reasons why the shaft is upsized on other makes of shock in place of a comparatively small amount of additional oil under the piston.

    I doubt the amount of oil under the piston has fuck-all to do with Wilber's choice of shaft diameter, to be honest.

    Just sayin'
    #38
  19. ragtoplvr

    ragtoplvr Long timer

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    If you have less area below the piston, to do the same work, a higher pressure is needed. Higher pressures increase wear and need upgraded and more expensive materials. And the oil shears down quicker. Rebound damping is important.

    So shaft diameter IS quite important and WAS chosen for many reasons. Or do not believe me and my years of hydraulic system design experience.

    Rod
    #39
  20. JustKip

    JustKip Long timer

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    Ted Porter, of BeemerShop fame and Wilbers expert extraordinaire, told me pretty much the same thing when he was advising me on my shock purchase.

    I went with Yacugar and the 16mm shaft, for the same reasons the OP should have...excessive weight. There's really no other reason to go bigger. The 14mm shaft suffers stress cracks only when loaded heavy. Otherwise, Ohlins and Wilbers are awesome!

    Oh, and BTW; yes, you do have shorter service intervals with a bigger shaft and less oil.
    #40