Comments on: Why is my chain slipping on my cycle bike?

By: cyclepro

cyclepro — Sat, 04 Apr 2009 00:13:28 +0000

check the shifting “ramps” on the inside of the front rings- if worn they can cause your chain to slip under pressure.
It is also advisable that when you change your chain, you service the whole drive train at once, since they all wear together. The parts sort of blend into one another, so when you just change one thing the cog may not exactly matte with the chain 100% of the time. Change At least the back cog and the chain, if the front rings look worn them to. ($$)
If you service your chain and cog all the time the same you can save your front rings from excessive damage.
Sounds like you need 9 spd shimano. For tooth range just count the small one and the biggest ring in the cog.
Also check CABLE TENSION of all front and rear Der.
good luck

By: Roman H

Roman H — Wed, 01 Apr 2009 19:52:12 +0000

As a racing cyclist I learned this lesson years ago.New chain means new block otherwise it will slip.Your existing block will have worn with the old chain so the new chain now slips on it.

ask any good cycle shop they will confirm this.

By: MadMonkey

MadMonkey — Wed, 01 Apr 2009 18:58:49 +0000

As long as the chain is close to the length of the old one it should work. You should probably replace the cassette. If the derailleur is working properly, a chain that is too long will not cause this problem.

Chains and cogs wear together. When you replace just the chain, the new chain has less wear on the rollers so they are actually larger than the old ones. The new rollers on the chain don’t mate porperly with the worn teeth and will skip, _especially_ when you put power to the pedals. It will be most noticable in the smaller cogs, and the ones that you use most often. FWIW, in 25 years I have never had a largest rear cog that skipped, It’s always been the smaller ones.

By: ashypoo

ashypoo — Mon, 30 Mar 2009 15:08:16 +0000

If its actually slipping and you’ve made sure its got the correct number of links, then chances are the teeth are worn on the gears that are affected.

Its also possible that the derailleur is actually phantom shifting, which can feel like slipping, and occurs mainly when you apply a lot of pressure to the chainset, such as when you’re in higher gears or riding up a steep hill.

If its this, then you need to adjust the derailleur/s so that they have the correct alignment, then your chain will stay where you expect it to be.

By: Madrider

Madrider — Sat, 28 Mar 2009 23:51:15 +0000

I have the same problem right now only on a road bike. Check the chainrings in the front or cogs as some people know them. They could be worn out. If the teeth on the cogs are worn, it can cause slippage. Check the cassette too. You might have to replace both. Usually when I buy a new chain I replace the cassette too.

By: Sparky

Sparky — Sat, 28 Mar 2009 13:19:05 +0000

Adjust the back wheel, by pulling it backwards until the chain tightens.

By: frisbee45uk

frisbee45uk — Fri, 27 Mar 2009 08:44:01 +0000

i think you need some links taking out of the chain needs to be tight,xx

By: MrOrph

MrOrph — Tue, 24 Mar 2009 07:56:09 +0000

Ur going to have to size the chain so that it is taught on the highest gears and still large enuf for the lowest gear of largest cog. I know, it can be frustrating, but it is a matter of tweaking.

By: Moose

Moose — Tue, 24 Mar 2009 05:42:50 +0000

Sounds like it to me.

By: phil the rum drinker

phil the rum drinker — Fri, 20 Mar 2009 23:05:36 +0000

It`s not tight enough , adjust your deraliar, or take a link out…