I have 9 speed running gear and have recently put a new 9 speed chain on, but every time I put any decent pressure on the pedals the chain slips over the teeth on the rear cogs. The teeth on the cogs are not worn and it never happened with the old chain. Any suggestions why its happening ?
2006-10-09 02:53:51 · 9 answers · asked by Anonymous in Sports ➔ Cycling
eslapping on too much of a grease will cause that slip from the chain when changing gears, if thats not the case, check out the teeth from the rear cogs, you might have a teeth MISSING (not worn), but since you said it doesnt happen to your old chain, the only solution is the grease.
1) take a cloth and wipe down the chain, wipe down the cassette and your front crank
2) take a good lube, like pedros and lube it. if you want to know how to lube the chain, its way to long to explain here. just email me at fitness976@yahoo.com i will teach you step by step.
3) once you have relubed it, take it out for a test run. it should be no problem at all ! glad to help. Cheers
2006-10-12 07:52:39 · answer #1 · answered by Isaac 4 · 0⤊ 0⤋
firstly clean the entire chain and sprockets with petrol or a similar solvent and then lubricate the chain, preferably with a decent cycle lubricant or if not use a decent oil such as 3 in 1 oil. Aviod WD40 and spray oils on chains at all costs as these will actually damage ur chain not help. Also use sparilingly and don't drown it in oil as this attracts dirt and damages it.
If this doesn't work then it is because the teeth are worn or ur chain is incompatable (eg sram cogs and shimano chain).
I know u say that the cogs aren't worn but very few cycles shops will reccommend/fit a new chain without reccommending chain the cogs as theteeth will be worn although not visibly and the old chain would have worn with these so u wouldn't have noticed it. If this is the case then u must either change the cogs or just keep riding as eventually it will fit however this is bad 4 the bike.
2006-10-13 08:56:55 · answer #2 · answered by mbenn60 2 · 0⤊ 0⤋
Sounds like a mismatch between gears and chain. Some say I'm crazy but IMO you should never change a chain without changing out cassettes or freewheel and chain-rings because if you have run the chain long enough to have to replace it, your gears are worn the same and also need replacing.
Gears are funny and I know you stated there not worn, and may not be worn to the eye but to your new chain may be telling you they are worn enough so the chain isn't seating properly and that's why your having the problem.
Beyond that it could be a derailleur problem. Try putting the bike in a trainer so you can pedal it from the side and watch what happens when you start shifting, that would be a way too get an idea of what's happening in the gears.
2006-10-09 20:17:41 · answer #3 · answered by Ric 5 · 0⤊ 0⤋
It may be a 9 speed chain but from experience some chainwheels or back cogs are built for different chain sizes. It may be that your rear cogs were designed for a smaller chain size and the larger one is causing it to just slip over the teeth. I had this problem on my bmx bike a long time ago. I bought a cheap freewheel for a spare back wheel. Well I ended up breaking my acs and threw the spare wheel on. First time out of the gate it sliped and I about fliped. The freewheel was designed for a 3/16 instead of a 1/8. So check to see if the insides of the chain are sitting down in the teeth properly. Next check your chain tension. You may not have enough tenstion and when you put pressure down and the derailur moves it allows the chain to kink up slightly and skip. That could be fixed by either moving the wheel further in the dropout or taking a link out of the chain. The problem could also come from the derailurs not being properly aligned this could cause you to skip down or up gears than what you have it set on. If you know how to adjust that go ahead. If you know how to check the rest of the stuff I mentioned by all means save the money and do it yourself. Otherwise I suggest hitting up the local bike shop and having them take a look at it.
2006-10-09 10:08:33 · answer #4 · answered by trl_666 4 · 0⤊ 0⤋
There are two possibilities that I know of. 1) Your old chain and your cassette "wore" out together as you put miles on your bike. Most people recommend changing out both at the same time. 2) Your new chain is tighter or maybe a better why to explain this is that your old chain stretched. So you may need to adjust your rear derailure to stop the chain from jumping. I believe it to be the latter unless you have about 1,500 to 2,000 miles on the cassette.
Hope this helps.
2006-10-09 11:01:05 · answer #5 · answered by gunnymick 1 · 3⤊ 0⤋
Hey dude, without seeing the bike i'm 99% sure it'll just be your rear mech' needing adjusting. If it's a shimano, where the cable goes into the rear mech there is a little thumb screw. Shift into 8th (2nd from bottom is you're using a top normal system). Turn the thumb screw 1/2 a turn at a time anticlockwise (viewed from behind the bike) until you hear the chain clattering as it tries to climb into 7th. Turn the thumb screw clockwise until the noise stops but no more. This should fix your problem.
2006-10-09 16:54:32 · answer #6 · answered by dave p 1 · 0⤊ 0⤋
another vote for changing the rear cassette whenever you change the chain. If ever I've changed one without the other I've always had problems when putting pressure on the pedals. Even though the rear cassette may not look worn, if it's had a few months wear then I'd get it replaced.
2006-10-11 10:39:03 · answer #7 · answered by Anonymous · 1⤊ 0⤋
Make sure your chain is greased properly also check to make sure the chain is the right tension because if it is too loose that could be the reason. If it is too loose take out a link in the chain then put them back together
2006-10-09 10:03:35 · answer #8 · answered by Anonymous · 0⤊ 0⤋
they deurailler may have to be adjusted. make sure the hanger is straight too. a bent hanger can cuase a headache of shifting problems.
2006-10-09 19:30:26 · answer #9 · answered by Anonymous · 0⤊ 0⤋