Unusual chain-snagging problem - help!

Hi all

When trying to ascend some particularly steep climbs using the small front ring, the chain has
started to behave most oddly.

It seems to get 'caught' on the chain ring and continues round until it gets stuck under the part of
the chain that is then coming onto the ring.

As you can imagine, this then abruptly prevents the cranks from turning - not very nice!

Bikes don't normally baffle me, but this has! Any help is most welcome.

Max

 

It's called chain suck. Your small chainring and/or chain are probably worn and the chain sticks on
the small chainring and does not release as it should. You probably need to replace the chainring
and/or chain. Before replacing the chainring, inspect it. You may be able to file down any burrs
that might be causing it. - Bill "Undercover Elephant" <[email protected]> wrote in message
news:[email protected]...
> Hi all
>
> When trying to ascend some particularly steep climbs using the small front ring, the chain has
> started to behave most oddly.
>
> It seems to get 'caught' on the chain ring and continues round until it gets stuck under the part
> of the chain that is then coming onto the ring.
>
> As you can imagine, this then abruptly prevents the cranks from turning - not very nice!
>
> Bikes don't normally baffle me, but this has! Any help is most welcome.
>
> Max

 

On Sun, 09 Mar 2003 14:15:22 -0500, BilDom wrote:

> It's called chain suck. Your small chainring and/or chain are probably worn and the chain sticks
> on the small chainring and does not release as it should. You probably need to replace the
> chainring and/or chain. Before replacing the chainring, inspect it. You may be able to file down
> any burrs that might be causing it.

I recently suffered chain-suck with a new (cheapo) chainring. REplacing it is the best option, but
filing down burrs might help -- new or old.

--

David L. Johnson

__o | When you are up to your ass in alligators, it's hard to remember _`\(,_ | that your initial
objective was to drain the swamp. -- LBJ (_)/ (_) |

 

"David L. Johnson" <David L. Johnson <[email protected]>> wrote in
news:[email protected]:

> On Sun, 09 Mar 2003 14:15:22 -0500, BilDom wrote:
>
>> It's called chain suck. Your small chainring and/or chain are probably worn and the chain sticks
>> on the small chainring and does not release as it should. You probably need to replace the
>> chainring and/or chain. Before replacing the chainring, inspect it. You may be able to file down
>> any burrs that might be causing it.
>
> I recently suffered chain-suck with a new (cheapo) chainring. REplacing it is the best option, but
> filing down burrs might help -- new or old.
>

Thanks guys, luckily the bike, a steel framed Rock Hopper, only cost me £40, so I ain't to
distressed!

Max