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| *Vultures Knob>>>Dirt Bike |
Dirt bike problem with chain? |
every time i shift gears or the rpms get high the chain starts to rattle alot i don't know what to do It is likely that the chain is now getting worn. Dirt bikes in particular are very hard on their chains. When you think of all the dust, mud, sand etc. that is thrown up by riding 'off road' it is not surprising. Added to which there has been a marked reluctance over more recent years for motorcyclists to take proper care of their chains. The chain stretches, so the links no longer ride evenly between the sprocket teeth, this causes the chain to rattle (as you've noticed) and eventually will cause the sprocket to 'hook' and become deformed by the no longer smooth action. Eventually it will get to the 'throw off' stage, where it will leave the sprocket and wrap itself round the wheel or the suspension arm etc. This can be VERY painful and better avoided. Get a new chain and then treat it well, if you do a lot of off road riding remove the chain at least once a week, soak it in 'Linklife' (or other suitable molybdemum product) and replace, adjusting the chain as per your workshop manual. Yes, I know it sounds a real pain (and it is) but unless you can afford a new chain frequently it is the only way to extend its life. When I raced motocross bikes we re-lubricated and protected the chain after every meeting. And yes, it was just as dirty, just as much a chore, as it is today. A first step would be to try adjusting the chain so that there is less scope for rattle, but I suspect it is really too late for that. Good luck and keep riding! BobSpain you need to adjust your chain. At the furthest to the rear point of the rear sprocket, if you can pull the chain back, off the sprocket more than half the height of the sprocket teeth, then the chain is past it's ware limit and should be changed. If you install a new chain, then change both sprockets also. Check the sprockets also. Thats could cause the same symptoms. If in doubt replace the chain and sprockets at the same time. All the above are good answers. A chain coming off due to being worn or badly adjusted can do considerable and expensive damage to your engine, jamming on front sprocket and bursting engine crankcases or smashing up ignition. |
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