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Thread: Thrown chain advice?

  1. #1
    Join Date
    24th May 2008 - 21:24
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    Thrown chain advice?

    my bike threw the chain today.
    jammed up against the case pretty well, i needed the rescue quad. thanks to the staff who got me out.

    anything to check specifically. im already aware of the possible gearbox damage.
    btw, i wasnt riding slowly at the time

    thanks
    we may just go where no ones been

  2. #2
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    2nd October 2005 - 00:47
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    Shit, did the link break? Not like your bike is super powerful!

  3. #3
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    21st April 2008 - 22:50
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    Post some pics of your chain and sprockets, if they are getting worn then it may be time to replace them. it is best to replace chain and sprockets together, so they wear in together.

  4. #4
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    2nd September 2008 - 22:18
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    Quote Originally Posted by Pedrostt500 View Post
    Post some pics of your chain and sprockets, if they are getting worn then it may be time to replace them. it is best to replace chain and sprockets together, so they wear in together.
    the chain and sprockets are fine, its the bike thats the problem


    ha ha i couldnt resist, sorry ha ha
    SHE LOOKED UP AT ME WITH BLOOD IN HER EYES
    THEN HER SKIN FELL OFF
    AND SHE PROMPTLY DIED
    IT WAS EBOLA, LA LA LA EBOLA

  5. #5
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    2nd October 2005 - 00:47
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    Quote Originally Posted by flyingcr250 View Post
    the chain and sprockets are fine, its the bike thats the problem


    ha ha i couldnt resist, sorry ha ha
    LOL!!! Tui is taking over Gas Gas marketing?

  6. #6
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    21st May 2007 - 18:03
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    Quote Originally Posted by noobi View Post
    my bike threw the chain today.
    jammed up against the case pretty well, i needed the rescue quad. thanks to the staff who got me out.

    anything to check specifically. im already aware of the possible gearbox damage.
    btw, i wasnt riding slowly at the time

    thanks
    ouch, had you not replaced hem after the 2-man??? You checked the casings for cracks yet? need some pics really
    Broken bikes wanted, pm details

  7. #7
    Join Date
    24th May 2008 - 21:24
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    the link didn't beak, it came of the rear sprocket cleanly.

    The sprockets and chain are less than 5 hours old.

    It didn't damage the case, due to the hydraulic clutch slave cylinder being in between the sprocket and the case.

    After removing the stuck chain, the front sprocket is history, I'm not sure about the chain, but the gearbox seems to move freely when moved by hand. there's no disturbing noises. even when the kick starter is used to turn over the gearbox in every gear
    I'll drop the oil and check for broken teeth tomorrow.

    I thought about drinking my 2man tui after today. but i didn't

    I have one pic, taken off the helmet cam footage.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    we may just go where no ones been

  8. #8
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    1st December 2008 - 16:59
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    Oh sheet. Thats not good, better buy my ktm :P

  9. #9
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    24th August 2008 - 16:26
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    put the vid up of you before it did it

  10. #10
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    17th July 2006 - 13:53
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    sounds like youve probably gotten away with it.

    have you figured out how you derailed your chain? was the wheel straight- eg chain adjusters set evenly

  11. #11
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    9th May 2007 - 16:10
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    Where's your rear chain guide?? The one that mounts to the swingarm before the sprocket?

  12. #12
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    13th April 2007 - 17:09
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    The 5 hour old sprokets may be a clue!

  13. #13
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    11th April 2005 - 20:27
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    Likely your chain was too loose and check your rear wheel was installed straight, don't rely on the adjusters, they are often not accurate. Your better of to install your chain and sight how the links are lining up on the rear sprocket as you rotate the wheel backwards, if the links are rubbing on one side or the other you need to adjust the wheel until the chain runs onto the sprocket evenly.
    If you bought a cheap chain and sprockets it could stretch enough in one ride to be too loose. Also if the rear guide is worn or you went smaller on the rear sprocket these could be factors as well.
    Could have been worse if you had been running one of those so called case protectors, they tend to jam up chains real well and cause more breakages than they prevent in my opinion.
    Actually on looking at your pic I can't see a rear chain guide at all?


    Twice the displacement, twice the cost and a decibel problem, I'll pass on the inside brraaaap!!!

  14. #14
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    10th June 2006 - 10:18
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    somones bike is in need of some tlc me thinks

  15. #15
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    12th September 2008 - 17:56
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    somones bike is in need of some tlc me thinks
    *Cough*
    We have both done a lot of riding in the last 12 months / almost every weekend
    This is the Gasgas's second dnf / the first was when it fowled a plug and we didnt have a spare.
    The chain didnt break , it just fell off, which indicates to me it was not correctly tensioned.
    I could have been misaligned / but I doubt it.

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