Mad bike riding scientist
Join Date: Nov 2004
Location: Denver, CO
Bikes: Some silver ones, a black one, a red one, an orange one and a couple of titanium ones
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Originally Posted by abstractform20
please help me.
and my other road bike's fd wont shift to its largest gear.
this is cruel
The first thing that everyone tells someone with a derailer problem is to adjust the limit screws. This is just plain, flat wrong
. Messing with the limit screws is the absolute last place to start with a derailer adjustment. That's after
you've replaced cables, housing, shifters, and even wheels
Assuming that the bike shifted properly in the past, the issue isn't with the limit screws. It's a cable issue. Failure to shift is almost always a cable issue. Failing to shift into a lower gear...again assuming that it shifted in the past
...is because the cable is too tight. Have you been adjusting the cable to fix another problem? If so you've probably tightened the cable so that the derailer can't move over properly. Is the housing binding the cable? Then the cable isn't moving far enough to let the derailer move. Is the cable gunky? Or dry?
Your other derailer is having the opposite problem. It's cable is too loose. You need to tighten it so that the cable can move the derailer the proper distance.
The links that DMF provides are good resources to learn how to do it. Outside of that, go to a shop and have them show you.