Bicycle Mechanics - derailer adjustment

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Laru
05-23-08, 04:36 PM
how would I adjust my rear derailer (or shifter maybe?) if it doesn't move far enough over to engage the chain onto the largest chainring?

joejack951
05-23-08, 04:41 PM
Add cable tension and possibly, but not likely, adjust the high limit screw. Since you say rear derailler, I'm assuming you mean largest cog, and not largest chainring (which would be on the crank where your pedals are attached). But, in either case, more cable tension would do it. (I don't want to confuse you but the only way more cable tension would not be the fix is if you had a reverse action rear derailler).

Go to www.parktool.com (http://www.parktool.com) to read a good write up on derailler adjustments. The advice is fantastic in my opinion.
neil0502
05-23-08, 04:42 PM
http://www.sheldonbrown.com/derailer-adjustment.html

Sheldon knows (knew:() all....

Laru
05-23-08, 04:44 PM
I'm assuming you mean largest cog, and not largest chainring (which would be on the crank where your pedals are attached).

Yes, that is what I meant. And thanks for the advice.
bkaapcke
05-23-08, 05:05 PM
First, shift the chain to the smallest cog and check to see if there is slack in the cable at the derailleur. If there is, turn the barrel adjuster all the way in (clockwise, looking from the cable side) then back it out one full turn. Next, loosen the cable clamp on the derailleur and remove the slack. After this is done, proceed with cable tension adjustments. bk