10-14-2010, 05:24 AM
Looking around, seems there's a lot of issues with Rear Derailleurs.
Anywho, I recently had to change the rear wheel on my partners bike, after having done so I took it for a test ride last night only for the rear wheel to completely lock up on me. Somehow the Derailleur had caught in the spokes and span round. I fixed that by twisting it back and bending the hanger/derailleur back into place. However now when I change gear the derailleur slips forward and the lower cog presses against the frame losing all tension in the chain which slips off onto the axle.
I've read various guides all of which mention a H and L screw and some mention a B (?) screw, plus the little plastic twist grip thing attached to the cable. The derailleur is a Shimano, beyond that I can't find a model number, but the bike is a cheap "Argos" job. Tightening/Loosening either the H or L screw makes no difference nor does altering the tension in the gear cable with the plastic twister and I can't find the third screw on the derailleur.
Any ideas? (I believe my other half took pictures if they'd help).
Anywho, I recently had to change the rear wheel on my partners bike, after having done so I took it for a test ride last night only for the rear wheel to completely lock up on me. Somehow the Derailleur had caught in the spokes and span round. I fixed that by twisting it back and bending the hanger/derailleur back into place. However now when I change gear the derailleur slips forward and the lower cog presses against the frame losing all tension in the chain which slips off onto the axle.
I've read various guides all of which mention a H and L screw and some mention a B (?) screw, plus the little plastic twist grip thing attached to the cable. The derailleur is a Shimano, beyond that I can't find a model number, but the bike is a cheap "Argos" job. Tightening/Loosening either the H or L screw makes no difference nor does altering the tension in the gear cable with the plastic twister and I can't find the third screw on the derailleur.
Any ideas? (I believe my other half took pictures if they'd help).