Derailleur locked up

[NomDeGuerre]

EDIT: RESOLVED

Hi,

I wonder if anyone can help with an issue I'm having with my rear derailleur.

I'm not really sure how to describe this but you can see here http://tinypic.com/r/2cwogbb/8 (direct images not working...). Basically when changing gears, the mech (which has recently been professionally fitted) locked up in the stretched out position and now I can't get it back. It has happened a few times before and released itself, but no joy this time.

Sorry if this is discussed elsewhere - I did Google but couldn't find anything.

Thanks!

[cradom]

To start, you're chain is too short. The derailleur might be over-extending which could make it lock up.
http://www.parktool.com/blog/repair-help/chain-length-sizing

[NomDeGuerre]

(05-26-2015, 08:02 AM)cradom Wrote:  To start, you're chain is too short. The derailleur might be over-extending which could make it lock up.
http://www.parktool.com/blog/repair-help/chain-length-sizing

Hi. Thanks very much for that. That was indeed the case - just as you commented I was having the guy who fitted the mech fix it (but changing the chain length)!