Originally Posted by Slightspeed

Been trying to figure out the Simplex derailleur on my '78 PR10. Recently the chain is dragging between the big gear and jockey wheel. The derailleur is leaning forward at a different angle than most other Simplex that I see. I have a long cage Simplex that I'm thinking of trying, except it has a mounting claw attached, and this one is direct mount. Not sure if I can remove the claw and just bolt it on, or if it will screw up the pivot spring. Sure wish these had b-screws. I'm afraid the pivot spring in this one has given up. There is some tension, but the derailleur is pointing so far forward that the chain wrap at the cage is wierd looking. It also has difficulty shifting up the freewheel, getting hung between the big and 2nd gear down. The lowest gear I run is a 40t front, 28t rear.

Yeah, I know, it needs a new cable too.

My bike on the left. I also want to raise the brake levers a smidge, which means re-wrapping the bars.