3
votes
3answers
140 views

Rear index shifting not staying in middle gears

I have replaced a chain (SRAM PC 830) and 7 speed freewheel (Shimano MF-HG37) on the back of my daily commuter bike about 300 miles/ 3 weeks ago with the same models. The old parts lasted me 4000 ...
3
votes
1answer
51 views

Misadjusted B-screw: symptoms?

What are the typical symptoms of incorrectly adjusted B-screw in the rear derailleur? How does it manifest itself when shifting? Obviously, if the cage pulley interferes with the cog, the problem is ...
1
vote
1answer
207 views

derailleur P-screw/B-screw does absolutely nothing

I know dérailleur adjustments are frustrating, but this is the 4th day i'm working on this... i stop working just before the rage kicks in and leave everything to continue another day :) The problem ...