Comment by Brian Jenkins (BJ) on April 10, 2011 at 22:19

Ended up with the rear derailleur in the back wheel once when trying to ride through thick claggy mud.  Seen it happen to a couple of others on outback rides in the same conditions.  No mud for you though.  Would have thought only likely to happen when you're putting great pressure on chain etc - i.e. riding uphill rather than cruising.  Chain out of alignment? (which was causing it to come off)

Comment by Roger ... on April 10, 2011 at 22:20

the bike frame flexes under load and the alignment changes.

or if the hanger is bent the chain comes off & you cant select all the gears to boot

if you had new cables fitted they need to bed in and then a bit of tweaking may be required.

Comment by Roger ... on April 10, 2011 at 22:49

just remembered .. your old chain was a bit long i noticed you had heaps of links to allow a bigger cassette on a ride recently, that extra length allows to the whole gear system to be a bit sloppy. If you LBS corrected the length you will get crisper changing ..  but .. a bent derailleur hanger and wear in the springs etc flex and other stuff would become more obvious.

New chain cut over length (same as before) on an old cassette is nearly sure to slip so cutting the chain shorter helps you use your old cassette longer.

Comment by Darren Bosanko on April 11, 2011 at 12:42

Someone was trying to tell you something....Better luck next time

Comment by JDL on April 11, 2011 at 12:46

Not sure why it'd go into the wheel all of a sudden but if it could reach the wheel it seems your inner limit screw on the derailleur wasn't adjusted correctly.. The derailleur shouldn't be able to reach the spokes etc, that's what the limit screw is for... As suggested above, I think the service you got sucked! Glad I do my own servicing..

Comment by Clive Palfrey on April 17, 2011 at 23:54

Picked up the bike on Saturday, LBS had to wait for parts. Still a mystery to both of us as to why it happened but in fairness to LBS he replaced the hanger and derailleur at no cost to me. One thing I didn't mention in my original post was that as the chain dropping got worse there were a couple of occaisions when the chain didn't drop off but seemed to be just sitting on top of the smaller chain ring and was gliding, turning but no traction.

Did a test ride on Sat but will have to test it on a couple of hills on Monday.

Add a Comment