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| *Vultures Knob>>>Bike Pedals |
Problem with Bicycle? |
I have a problem with my bicycle. When I put pressure on the pedals to go up a slope, pull off at junctions etc. the chain seems to slip around the cogs on the rear wheel. It works ok when I travel at a constant speed on level ground. It is an 18 speed mountain bike around 10 years old and used regulary. Any help would be apreciated I agree. The most common reason for chain slippage is a worn chain and rear cogs. If the bike is that old you should have BOTH the chain and rear cogs replaced. Replacing only one or the other will result in faster wearing of both. Also, if the bike has never been overhauled you would do well to have it done. The shop will basically tear the thing apart and rebuild or replace every moving part. Cost on this is relatively high but it will make your bike operate as new. Source(s): 26 years in the industry take a coulple of links out of your chain, it seems to be too loose hense the slipping sounds like you need a new spindle It sounds like your chain and/or your rear cassette may be warn out. 10 years is a lot of time on a regularly used chain. Check the teeth on the rear cassette, are they rounded? If so it may be time to replace. Lastly, your derailleur could be out of adjustment. If you have a couple extra bucks, I would bring it to a bike shop and have them take a look. A good bike mechanic will have your bike up in no time. possible causes: - the cogs are really dirty. Dust / dirt tends to accumulate between cogs. This gets much worse much more quickly if you use your bike in rough terrain. The worse is long grasse, which can "fill" the cogs within a matter of minutes. Solution: clean carefully the space between the cogs - the chain is really dirty. Clean it. To clean it, remove it, bathe in in gasoline untill all grease is gone, then clean with brush / soap. Then re-oil (lightly) before putting back in place. - the rear cogs are worn. You might have thought that cogs were eternal, but they're not, they wear. In which case you'd have to replace the worn cogs. Not that cheap (not that difficult to do if you have the tools), but it will last another 10 years. This being said, good quality cogs should last 20 years not 10, at least (and of course enclosed gearboxes such as the 8-speed Shimano Nexus will last much longer - but they are less efficient) Hope this helps Before you atempt to take links out the first thing to do is to loosen the nuts at the spindle, ie the ones which hold the wheel on, then push the whole wheel further up the slot and retighten the nuts. If this has no affect then Yes the chain has stretched. Chain links look as though there are two but in fact they are only one link, so do not take two links out. Take one link out first and if the chain is still too slack then take a further one out. To remove a link you will first need to remove the conecting link which is on the outside of the chain and is like a long letter U. Use pliers for this. Then with a nail punch and the chain link pin over a nut clout it with a hammer on the pin and it will come out. Then refit the link and reassemble the chain and wheel. Reason it all out before you start. OK? |
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