21-05-13, 06:25 AM
Chain jumping about on centre stand is normal, caused by wheel momentum with no weight load, the chain is stopping the wheel from overtaking it so flaps about a bit.
You are describing either a tight link, or a misaligned rear wheel.
Move the wheel slowly on centre stand and look for links that aren't as totally horizontal as the others, if there is one or more it will actually be quite obvious, normally sticking at a slight angle aiming upwards from bottom left to top right when viewing the lower part of the chain.
Ideally, if this is the case, it will need a good lube or soak in paraffin or oil overnight and maybe try and work the link free with pliers. This can work but isn't always successful, or won't last long either, unless you're very lucky.
The trick is to keep the chain heavily lubed all the time, it doesn't take much time in bad weather to dry a joint out, especially if left out in the elements.
Other option is offset rear wheel, that may be coupled with an overtightened chain.
Had it myself a few days ago, a new mechanic i've not used before fitted a new chain and sprockets for me but i kept feeling something a bit lumpy on the left foot and when i checked the markings they were different each side by about 1.75 notches......i wasn't impressed!! :rolleyes
Took my time levelling them up properly, with proper chain slack, and all is well now.
You are describing either a tight link, or a misaligned rear wheel.
Move the wheel slowly on centre stand and look for links that aren't as totally horizontal as the others, if there is one or more it will actually be quite obvious, normally sticking at a slight angle aiming upwards from bottom left to top right when viewing the lower part of the chain.
Ideally, if this is the case, it will need a good lube or soak in paraffin or oil overnight and maybe try and work the link free with pliers. This can work but isn't always successful, or won't last long either, unless you're very lucky.
The trick is to keep the chain heavily lubed all the time, it doesn't take much time in bad weather to dry a joint out, especially if left out in the elements.
Other option is offset rear wheel, that may be coupled with an overtightened chain.
Had it myself a few days ago, a new mechanic i've not used before fitted a new chain and sprockets for me but i kept feeling something a bit lumpy on the left foot and when i checked the markings they were different each side by about 1.75 notches......i wasn't impressed!! :rolleyes
Took my time levelling them up properly, with proper chain slack, and all is well now.
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