For all the posts slating some bike shops thought I post a thread commending the service from the Edinburgh Bike Co-op.

 After todays jaunt around Glentress was cut short with a broken XT shadow derailier, I decided a trip to the bike shop was required for a new one.

 However on discussing it with a mechanic he suggested it may be possible to salvage,& after ignoring the job he was working on stripped it down there & then.

And the charge?  £5.

Brilliant.  Credit where credit is due.

Actually no spares were required.

The end of the spring had somehow jumped out of its retaining hole, hence simply spinning with no tension. All it required was to be pre-assembled correctly and perfect.

 Admittedly slightly embarrassing from my side, but then again the mechanic even admitted he had never looked inside the spring housing before either.

I have slight reservations as to how the bugger became loose in the first place & hope it doesn't repeat - will see how it goes. Very easy to sort.  

Just goes to show its worth checking failures - alternative is costly new part when it may not be needed.