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New Cable Installation Question.....(7 posts)

New Cable Installation Question.....Len J
Jul 20, 2001 3:57 AM
When replacing Der cables (front & Back), Is it necessary to reset limit screws to some neutral position prior to reattaching the Cable? If so what is neutral position? I have several maintenance books & maybe I've looked at them too long but I can't find this adressed. It seems to me that the limits that are set prior to releasing the old cables are specific to those cables (strech etc.) so I thought you would have to adjust them back to a neutral position (Halfway in/out) but I'm not certain. Am I overthinking?

Your experience would be welcome.

Thanks in advance.
no, you are overthinking.Rusty McNasty
Jul 20, 2001 4:58 AM
The limit screws on the derailleur are set to the limits of the gears. The only thing which is specific to the cable would be the barrel adjuster. You only need to adjust the limits when you change cogs, and even then, it's rare.
re: New Cable Installation Question.....Rusty Coggs
Jul 20, 2001 5:04 AM
DON'T mess with the limit screws. Remove the cables. For the rear derailer, the new cable should be installed with the shifter set to the small cog position. For the front derailer, the cable should be set to the small chainring position.you are confusing function of limit screws with the function of cable tension adjusters. The tension adjusters should be set to a position about 11/2-2 turns out so that there is still ample travel in them to make adjustments and take up cable stretch.
Reason I asked question.....Len J
Jul 20, 2001 6:38 AM
Thanks for the reply's. As I think now, the reason I asked the question was because the upper limit screw on the Fron Der. was all the way in (no more adjustment available. This seemed to me to only give me one way to adjust after I changed cables. This didn't seem right.

Does this make any sense?
Hmmm, sounds like the BB might be too longjw25
Jul 20, 2001 8:09 AM
but in any case, the limit screws are set to the frame dimensions, not the cables. The only adjusting you'll need to do is the cable adjusters, as things settle back into place (the famed cable stretch phenomenon.)
Actually, too short.grzy mnky
Jul 20, 2001 8:39 AM
Upper limit screw would be for the large CR which would indicate that the crank was to far in from the BB being too short. Of course if it's the smaller CR then the BB might be too short. Ultimately the thing that really matters is the chain line.
Now it makes sense....Len J
Jul 20, 2001 9:04 AM
Thanks for the bucket of cold water. I'm awake now. I was overthinking.