Bicycle Mechanics - Deore LX RD-M580-SGS Derailluer not long enough
Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.
I have the following equipment:
Deore LX FC-M580 (42-32.22) crankset
Deore LX CS-M580 (11-34) cassette
Deore LX RD-M580-SGS rear derailluer
mounted to a Surly LHT.
The rear derailleur doesn't seem to be long enough to engage the last two sprockets on the rear cassette but as far as I know it is the longest one available. Is this normal? Is there any way to make it work?
That should work fine. Check your chain length.
04-29-08, 07:30 PM
Which cogs are the last two, the biggest or the smallest cogs? Does this happen in all chainrings or just one?
04-29-08, 07:34 PM
No reason it shouldn't work so I second the recommendation to check the chain length. If the chain too short to allow shifting into the largest cogs, it must be changed. Also, the derailleur's inner travel stop screw must be adjusted so the derailleur can move far enough inboard to reach the largest cog. Either of these could be your problem.
... the traveller cog physically hits the rear sprocket?
I'm using a SRAM PC-991 chain.
04-29-08, 07:56 PM
B tension adjustment screw needs to be set!
haha, of course! i'll set them up, you guys knock them down :)
04-30-08, 12:34 PM
Umm, there's no cable attached. I recommend attaching the cable first as it will tend to pivot the derailer back as it pulls it in which gives it clearance for the bigger cogs.
Powered by vBulletin® Version 4.1.12 Copyright © 2013 vBulletin Solutions, Inc. All rights reserved.