Classic & Vintage - Shimano "Light Action" Components

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mrchristian
04-18-05, 09:41 PM
I got these components on my 1986 Schwinn Traveler mixed in with Suntour/Dia Compe stuff. I was wondering if I could find the model number on the "light action" derailer and shifters and stuff. Was this on the high end side, or the low end side? Thanks.

T-Mar
04-19-05, 06:50 AM
Light action was entry level. The model number for the rear derailleur will be on the back/inside arm of the parallelogram. Format should be RD-Lxxx, where RD=rear derailleur, L = light action, xxx = model number. I believe there there different models; 523, 525, 532. Failure of the parallelogram's rear arm is not uncommon on these derailleurs, due to the pivot point for the spring anchor lever.
nick burns
04-19-05, 07:08 AM
Failure of the parallelogram's rear arm is not uncommon on these derailleurs, due to the pivot point for the spring anchor lever.

Yup, I have an old Raleigh mountain bike that came with light action and that's exactly what happened.

mrchristian
04-19-05, 05:35 PM
Thanks for the info...

Great...problems with the derailleur snapping in half. Just what I need when I'm 100 miles out in the middle of nowhere. :)