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| RickTaff |
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RickTaff
Nitrous Nuisance
Joined: 28 Jul 2016
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 Posted: 23:42 - 03 Feb 2020  Post subject: Chain question... |
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Friend of mine decided to copy me and come off his bike on black ice, bike slid down the road, didnt impact any walls, cars etc.
The only damage he had was cosmetic and his chain slipped off the rear sprocket, and got stuck down by the sprocket itself; and a few exisiting plates/links were bent and no good. So he removed the bad links, bought a new master link and re attached his chain.
When i popped over to visit I noticed his chain along the bottom run, looks as if it has a lopsided look to it, almost a slope effect. He has ridden the bike like this (!!) and said it occasionally feels like it wants to pull to the left, and the back end feels a bit unnerving sometimes.
I checked his wheel alignment was fine, forks and handlebars are not out of whack either. He rung a garage while i was there and the service mechanic reckoned his chain has a 'whip' in it (twist) caused by the bike as it's slid across the ground - and this will indeed cause these symptoms... is that right? Call me a noob but id not have thought a chain could make the bike pull to one side.
Also, if a chain is say 525 108 and this is correct for the bike, by removing links, even though the chain still fits is it not now techincally the wrong chain, as its no longer a 525 108 anymore, and this would cause issues too? |
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| Shaft |
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Shaft
World Chat Champion
Joined: 27 Dec 2010
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| Posted: 23:57 - 03 Feb 2020 Post subject: Re: Chain question... |
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| RickTaff wrote: | Friend of mine decided to copy me and come off his bike on black ice, bike slid down the road, didnt impact any walls, cars etc.
The only damage he had was cosmetic and his chain slipped off the rear sprocket, and got stuck down by the sprocket itself; and a few exisiting plates/links were bent and no good. So he removed the bad links, bought a new master link and re attached his chain.
When i popped over to visit I noticed his chain along the bottom run, looks as if it has a lopsided look to it, almost a slope effect. He has ridden the bike like this (!!) and said it occasionally feels like it wants to pull to the left, and the back end feels a bit unnerving sometimes.
I checked his wheel alignment was fine, forks and handlebars are not out of whack either. He rung a garage while i was there and the service mechanic reckoned his chain has a 'whip' in it (twist) caused by the bike as it's slid across the ground - and this will indeed cause these symptoms... is that right? Call me a noob but id not have thought a chain could make the bike pull to one side.
Also, if a chain is say 525 108 and this is correct for the bike, by removing links, even though the chain still fits is it not now techincally the wrong chain, as its no longer a 525 108 anymore, and this would cause issues too? |
Not really concentrating, but first thoughts.
Chains don't just 'slip off' sprockets, unless the sprockets are excessively worn and/or the chain is excessively loose.
The fact that he has removed 'a few' links suggests the thing must've been hanging down like a washing line.
I would think he's removed so many links that it's now over tight and by riding it, he's probably knackered a bearing, wheel, sprocket carrier or (if it's extremely tight) swing arm, hence the dodgy handling.
Pics would help, but I would be buying a new C&S set and thoroughly checking for bearing wear.
Is this on a cheapo 125 by any chance?
Edit: 525 might be a bit wide for a 125. To answer your other question, 525 is basically the width, 108 is the number of links - if it's now a few less and still fits (I would question that) it was fucked to begin with.
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20 RE Interceptor, 83 Z1100A3, 83 GS650 Katana
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| RickTaff |
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RickTaff
Nitrous Nuisance
Joined: 28 Jul 2016
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| Posted: 00:11 - 04 Feb 2020 Post subject: Re: Chain question... |
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| Shaft wrote: | | RickTaff wrote: | Friend of mine decided to copy me and come off his bike on black ice, bike slid down the road, didnt impact any walls, cars etc.
The only damage he had was cosmetic and his chain slipped off the rear sprocket, and got stuck down by the sprocket itself; and a few exisiting plates/links were bent and no good. So he removed the bad links, bought a new master link and re attached his chain.
When i popped over to visit I noticed his chain along the bottom run, looks as if it has a lopsided look to it, almost a slope effect. He has ridden the bike like this (!!) and said it occasionally feels like it wants to pull to the left, and the back end feels a bit unnerving sometimes.
I checked his wheel alignment was fine, forks and handlebars are not out of whack either. He rung a garage while i was there and the service mechanic reckoned his chain has a 'whip' in it (twist) caused by the bike as it's slid across the ground - and this will indeed cause these symptoms... is that right? Call me a noob but id not have thought a chain could make the bike pull to one side.
Also, if a chain is say 525 108 and this is correct for the bike, by removing links, even though the chain still fits is it not now techincally the wrong chain, as its no longer a 525 108 anymore, and this would cause issues too? |
Not really concentrating, but first thoughts.
Chains don't just 'slip off' sprockets, unless the sprockets are excessively worn and/or the chain is excessively loose.
The fact that he has removed 'a few' links suggests the thing must've been hanging down like a washing line.
I would think he's removed so many links that it's now over tight and by riding it, he's probably knackered a bearing, wheel, sprocket carrier or (if it's extremely tight) swing arm, hence the dodgy handling.
Pics would help, but I would be buying a new C&S set and thoroughly checking for bearing wear.
Is this on a cheapo 125 by any chance? |
It certainly was, i can remember seeing the bike parked on its side stand and the chain was really sagging. This is going back 3 weeks or so, give or take. That is why my initial thought was when the bike has been on its side skidding along, the chain was so slack it has fallen off the sprocket and just got jammed, buckled whatever during the skid.
When he removed the links it was simply to get the chain back on the bike, as while the links were buckled, the master link would not go back on correctly. So he removed the bad links, bought new master link and connected it all back up. Perhaps I am wrong and the pulling to one side and suspect handling has only started since he re-attached the chain.
re. the 525 part, i can only assume he moved the wheel forward so the chain would fit again, and then re-tightened it to spec |
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| Shaft |
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Shaft
World Chat Champion
Joined: 27 Dec 2010
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Posted: 00:37 - 04 Feb 2020  Post subject: |
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Sorry, I must've edited my post while you were replying.
If you can take a few links out and still get it to fit, the chain is done and, by extension, so are the sprockets.
Get new and, as said, check all the bearings for wear.
Then teach your mate how to adjust and lubricate his chain once a week, before he has one snap and take his foot off at the ankle.
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Things get better with age; I'm close to being magnificent........
20 RE Interceptor, 83 Z1100A3, 83 GS650 Katana
WooHoo, I'm a Man Point Millionaire! https://www.bikechatforums.com/viewtopic.php?t=234035 |
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| stinkwheel |
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stinkwheel
Bovine Proctologist
Joined: 12 Jul 2004
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| Posted: 00:50 - 04 Feb 2020 Post subject: |
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If he's managed to take "several" links out, I'd be concerned about the swingarm itself being either bent, broken or loose.
They can snap through a weld in a crash either at the end where the wheel spindle goes through or where the "arm" attaches to the pivot. I suppose a frame mount could let go too. I've seen more than one Chinese 125 with a snapped frame.
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I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles. |
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| Sister Sledge |
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Sister Sledge
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| RickTaff |
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RickTaff
Nitrous Nuisance
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| Easy-X |
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Easy-X
Super Spammer
Joined: 08 Mar 2019
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| Posted: 09:52 - 04 Feb 2020 Post subject: |
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For a chain to get so badly damaged and then to "just take out the bad links" I'd be thinking about the eulogy for his funeral 
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Royal Enfield Continental GT 535, Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter |
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| Nobby the Bastard |
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Nobby the Bastard
Harley Gaydar
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Old Thread Alert!
The last post was made 6 years, 10 days ago. Instead of replying here, would creating a new thread be more useful? |
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