F800GS Bitubo Fork Kit

Discussion in 'Parallel Universe' started by DockingPilot, Jun 1, 2009.

  1. itsatdm

    itsatdm Long timer

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    I still have the rear Hyperpro spring on the rear. To cope with the spring weight I have been running full hard rebound. I backed off 1.5 turns 2 weeks ago and noticed an effect on compression damping. Felt a little plusher. I know it is a rebound setting but there may be some interplay with compression. Seemed to be a happy spot because no further affect with adjustments beyond that.

    The spring change seems to match the Bitubo front pretty well.
  2. Motoriley

    Motoriley Still riding like crap after all these years.

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    Might give that a try. Thanks for the info.

  3. johngil

    johngil Reseda, CA

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    Jun 28, 2007
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    3,817
    Another Bitubo blowout today. I shouldn't have let them go more than 6 months for service, but I did. Shouldn't be a big deal since the shop now has the tooling.
    Hanging w/ the SE boys makes the brokeback beemer cry cry cry.:cry:cry:cry
  4. MTrider16

    MTrider16 Ridin' in MT

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    You going to invest in some Ohlins, or just continue with the Bitubos? Or maybe you have some other plan up your sleeve.

    David
  5. johngil

    johngil Reseda, CA

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    Hopefully I'll hear what's up tomorrow. I'm pretty sure I broke a few shims again. Depending on the cost of service and replacing whatever went south inside...

    I'll probably keep the Bitubo kit and service twice yearly.
    They do work very well since the re-valving was done.
  6. johngil

    johngil Reseda, CA

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    Forks are done. Nothing destroyed. Should be good for another six months.
  7. Motoriley

    Motoriley Still riding like crap after all these years.

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    Just for giggles what did they fix?

  8. johngil

    johngil Reseda, CA

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    There was a split o-ring on one of the cartridges. Sounds like a piece broke loose and got stuck in the valve assembly. This explains why I lost action one one of the legs.
    Other than that, just cleaning, re-assembly, fluids and a shot of gas.
  9. Motoriley

    Motoriley Still riding like crap after all these years.

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    Thanks. I don't use my 800 as hard as you do but was curious.

  10. 'Flagger

    'Flagger ..this space for rent..

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    Looks like a new thread was never started for this. Anyone have any info on what was done? What it cost?
  11. Motoriley

    Motoriley Still riding like crap after all these years.

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    Heard a little clunk from the front end this morning when driving out of the coffee joint to start my Sunday ride. I heard a similar little clunk the weekend before on a sharp edged bump at speed. Rode a 100 kms to the trail head and all seemed well on s,moothe pavement. First 100 meters of trail it was all over. The front end was clanking over every single bump and rock. Checked the steering bearings and everything else was tight, calipers, pinch bolts, axle etc. Looks like the Bitubo cartridge lasted one month and about 4 rides....
    Will pull it apart tomorrow.
  12. AKTroy

    AKTroy BE AWARE OF TRAINS

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    Seward, AK / Port Saint Lucie FL.
    Ouch!
  13. johngil

    johngil Reseda, CA

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    I have a referral for a shop in So.Cal if you're interested.
    They will also re-valve while they are in there.

    Bitubo uses some pretty tiny shims. I broke the hell out of a few of them.

    [​IMG]

    This shop has made the tools required to re-charge the cartridges. That seemed to be the biggest hurdle initially.
  14. Motoriley

    Motoriley Still riding like crap after all these years.

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    I'm hoping someone local can help. If not then So-Cal here we come. We have a place here called Stadium Suspension that I'll call on Tuesday. I'll put the stockers back in. Any chance something could have come loose? I don't do motocross on this thing and I'm fat and slow off-road so I can't see how I broke it so easily.:cry


  15. johngil

    johngil Reseda, CA

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    Mine started clunking a while back. I thought the worst.
    Nothing more than a servicing was needed. I believe some sort of debris stuck the something open in the valving. I'm an electrician, so the guy was speaking Greek to me.
    I'm confident I can ride a hard six months between servicing. Any more than that has proven to be a bad idea.
    Sorry to hear yours quit so early.
    If you give up on the Bitubos, I may be interested in buying them.
  16. Motoriley

    Motoriley Still riding like crap after all these years.

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    So I took it all apart and everything seems OK. Both cartridges seem firm and still charged. When I shake them I don't hear any rattling. Is that what you experienced. I have a mind to just put everything back and see if the problem is gone....


  17. johngil

    johngil Reseda, CA

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    Nothing rattling the second time. That was when the piece of debris got stuck. There was a noticeable difference when comparing both tubes in regards to feel, though.
  18. Motoriley

    Motoriley Still riding like crap after all these years.

    Joined:
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    2,981
    Location:
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    I put the stock internals back in with the heavier springs and going for a spin to see if the noise is gone.


  19. Motoriley

    Motoriley Still riding like crap after all these years.

    Joined:
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    Oddometer:
    2,981
    Location:
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    Well the noise is gone so I guess the cartridge lasted four rides.......:cry:cry:cry:cry


  20. Dockstrada

    Dockstrada Been here awhile

    Joined:
    Apr 7, 2011
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    238
    Crikey just after I install a Bitubo kit the problems start ,I hope all your problems have been a batch run incident :baldy