Author Chain issue  (Read 1888 times)

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  • Offline mjojom   gb

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    Offline mjojom

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    Chain issue
    on: May 04, 2023, 09:07:14 pm
    May 04, 2023, 09:07:14 pm
    Hi guys, after quick advice. I'm in lake garda as per other thread and feck me, what a place and routes. Thank you for suggestions.
    However, please have a quick look through the video and tell me how bad that chain is?
    I've got few more days of riding twisties so do I need to look for a bike shop immediately or will it last ?
    I'm not sure how it happened. I've adjusted chain two weeks ago and it was fine. Because my rear tyre didn't arrive in time I had a bike shop to change my rear tyre just a day before departure and they checked chain slack too.
    After 2700km chain got very lose, so today I've adjust it again, pinched it off the rear sprocket to check the wear it seemed OK. After 200 miles in trento today it was noisy again and vibrated, so upon closer inspection I found this, you can see one of the rollers is split .
     


    So any advice? If it lasts till uk, it will get changed as priority as soon as I arrive, but how bad it is , do I need to find a bike shop ? I've never seen chain do that. It's did the most expensive iteration if it, it has only got 18k on it.  There was a loads of rain and abrasion from roads on the way . And yes, ill be changing sprockets too. Thank you
    Last Edit: May 04, 2023, 09:18:34 pm by mjojom

  • Online Mareng1   gb

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    Re: Chain issue
    Reply #1 on: May 05, 2023, 03:55:42 am
    May 05, 2023, 03:55:42 am
    Never seen a chain like that !

    Looks like you have lost all lubrication inside the rollers and the bushes are shot completely.   It's hard to fathom how that happened, unless something wrong with the seals on that particular chain and contaminents have got in, and the grease has escaped.  Is there any chance it has been sprayed or immersed in any agressive solvent?

    [edit:  just watched the vid on the PC - What have the outer links been hitting or rubbing against to cause the worn patches of shiny steel?]

    Are the links/x-rings still resistant to movement or is the entire chain 'rattly and loose'?

    But - I would say that needs to be ridden carefully until you can get a new chain (and sprockets if possible) at the first possible chance.

    Think you need to ride as little and as slowly as possible to a dealer/garage and get a new chain and sprocket. 

    Do keep us updated - it's an interesting one!
    Last Edit: May 05, 2023, 04:35:25 am by Mareng1

  • Offline mjojom   gb

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    Offline mjojom

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    Re: Chain issue
    Reply #2 on: May 05, 2023, 06:25:50 am
    May 05, 2023, 06:25:50 am
    Morning,  all the other aspects of the chain seem OK. But I do agree , I've never seen chain like this before in my life either. Chain got really lose, adjusting it took two full turn of adjusting bolt, chain was just slapping around, i had a look around to see whats being hit , couldnt see anything,  intrestingly both front and rear plates both has got shiny metal. Now that rolers are lose it has got lateral movement too while riding, my first thought were front sprocket lose , but that was fine and found chain in this state. As per spraying it with something,  me apart of oiling it nothing, did someone spray it with something- I wouldn't know. My chains only ever get washed with detailing foam just as the rest of the bike , so no any harsh chemicals that should do that.

  • Offline Antares   gb

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    Re: Chain issue
    Reply #3 on: May 05, 2023, 07:33:04 am
    May 05, 2023, 07:33:04 am
    *Originally Posted by Mareng1 [+]

    [edit:  just watched the vid on the PC - What have the outer links been hitting or rubbing against to cause the worn patches of shiny steel?]


    Just on this,

    That's fairly normal, not sure of the reason myself but all my chains on the XR did that, probably just the tight running around the front sprocket's rubber cush drive, the same thing was on my KTM's chain, probably isn't helped by grit and contaminants stuck to the chain guides either.

  • Offline mjojom   gb

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    Offline mjojom

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    Re: Chain issue
    Reply #4 on: May 05, 2023, 08:40:27 am
    May 05, 2023, 08:40:27 am
    Just spoken to yam service shop over the phone that's near me, he thinks I should be fine to get me home , just keep greasing it. I'll go there and show him tho. I want some more spirited riding while here. 

  • Offline af1-windy   gb

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    Offline af1-windy

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    Re: Chain issue
    Reply #5 on: May 05, 2023, 09:52:59 am
    May 05, 2023, 09:52:59 am
    *Originally Posted by mjojom [+]
    Just spoken to yam service shop over the phone that's near me, he thinks I should be fine to get me home , just keep greasing it. I'll go there and show him tho. I want some more spirited riding while here.

    I don't think I could concentrate 100% on fast riding with a "possible" dodgy chain..  :084:

    I'd just get a new one fitted, you're gonna have to soon anyway and what's a few hundreds miles early worth, for peace of mind..  :028:

    But that's me, I'm mechanically sympathetic so everything has to be right or it plays on my mind..  :034:

     :821: windy..
    "When I’m riding my motorcycle, I’m glad to be alive. When I stop riding my motorcycle, I’m glad to be alive" Neil Peart.

  • Offline Salem   nl

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    Re: Chain issue
    Reply #6 on: May 05, 2023, 10:29:40 am
    May 05, 2023, 10:29:40 am
    I too would fit a new one, and sprockets. It does look like all the o or x rings have gone, and I would wonder in what state the pins are assuming corrosion has happened. Interestingly, I googled it and came across this where they tested a bicycle chain with part of the rollers removed, and the conclusion is no problem.. But that is not loaded with 160 bhp. I see no obvious signs of the rollers having hit the chain failure protector on the front sprocket, but would remove the plastic cover and see if something is stuck there causing the shiny links

    https://bike.bikegremlin.com/3370/roller-wear-affect-on-chain-engagement-with-chainrings/

  • Offline bennymx   au

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    Offline bennymx

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    Re: Chain issue
    Reply #7 on: May 05, 2023, 11:01:11 am
    May 05, 2023, 11:01:11 am
    I'd be replacing the lot.

  • Offline mjojom   gb

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    Offline mjojom

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    Re: Chain issue
    Reply #8 on: May 05, 2023, 11:04:01 am
    May 05, 2023, 11:04:01 am
    Yes yes, thank you all, I would be replacing all but no one has got kit, even chain was difficult to source, but I've got one, however not till tonight as they just hit siesta. New chain will do me till england. My bikes are always mechanicaly safe as I like it top. This just caught me out unexpectedly.

  • Online Mareng1   gb

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    Re: Chain issue
    Reply #9 on: May 05, 2023, 12:27:12 pm
    May 05, 2023, 12:27:12 pm
    *Originally Posted by mjojom [+]
    Yes yes, thank you all, I would be replacing all but no one has got kit, even chain was difficult to source, but I've got one, however not till tonight as they just hit siesta. New chain will do me till england. My bikes are always mechanicaly safe as I like it top. This just caught me out unexpectedly.

    You've checked the sprockets so at least the new chain should solve the immediate and mid-term issue.

    I would say that the internal roller bushes have worn completely and the cracked roller will just be the first of many. 

    No clearer to me - how the chain got like that, but I would suggest saving a foot-length section of the old chain (or the entire chain if you have room) - for further inspection/interest.

    Good luck with it all

     



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