any sagely advice on freeing a chain stuck between cassette

t4tomo

Any sagely advice on freeing a chain stuck between cassette and spokes?

A work colleague managed to flip the chain off the biggest cog and jam it in by the spokes, luckily he managed to stay upright! he couldn't free it by hand so I'm going to bring in cassette tool tmr to see if we can sort it. before I embark any advice from anyone who's had a similar situation. is it just a case of flipping chain of front chain rings to get some slack to get wheel out of drop outs and slackening cassette off to free it?

And yes we will be adjusting the limit screw to stop it happening again!

ride_whenever

Ideally whip the cassette of, but depending on the hub it can be easier (and require fewer tools) to just pull the freehub body off.

mudcow007

take seat post off put the post under the chain an pull up 'ard

thats what ive always done

vermin

mudcow007 wrote:

take seat post off put the post under the chain an pull up 'ard

thats what ive always done

As a scouser, don't you have a crowbar to hand.

gtvlusso

mudcow007 wrote:

take seat post off put the post under the chain an pull up 'ard

thats what ive always done

+1 - a good eye watering pull will do the needful.

t4tomo

Ah yes something to assist grippping the old chain without damaging anything will be useful as a first attempt, might save having to tart about with the cassette.

SimonAH

Now, had he of course kept the plastic frisbee rather than cutting it off to look like a pro he would not have had this issue in the first place :-D Does he shave his legs by the way? :-D

t4tomo

SimonAH wrote:

Now, had he of course kept the plastic frisbee rather than cutting it off to look like a pro he would not have had this issue in the first place :-D Does he shave his legs by the way? :-D

He was decidedly non-committal as to whereabouts of plastic disc, its a trek soemthing or other road bike, I assume it should have come with one. Pleased to say he's not a leg shaving nonce.

redvee

If/when the chain is removed have a look at the stop screws on the rear mech, they need a slight tweek.

mtb-idle

a good pull should see it come free after all the spokes are smooth and therefore shouldnt be any resistance on that side. Use some gloves or as suggested the seat post (that's a new one on me) to get some purchase on the chain.

It is worth checking the spokes for damage afterwards though as you would be surprised how a chain can chew through (or part way through) them.

Of course this is rather a bodge job as the correct and safer way to do it to avoid any further damage would be to remove the cassette but I admit i would likely do the same thing.

mudcow007

vermin wrote:

mudcow007 wrote:

take seat post off put the post under the chain an pull up 'ard

thats what ive always done

As a scouser, don't you have a crowbar to hand.

are you crazy?!

i don't want my good tools getting durty do i?!

bails87

MTB-Idle wrote:

It is worth checking the spokes for damage afterwards though as you would be surprised how a chain can chew through (or part way through) them..

Yep, I mangled all of the driveside spokes on my back wheel when my chain jumped over the top. In my defence, it wasn't poor indexing. It was on the MTB and the mech had taken a whack off something that had knocked it off line.

navt

Gloves?