Bicycle Mechanics - Old bike with tight derailer.
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01-17-10, 06:33 PM
Im fixing up this old bike and the front derailer is extreamly hard to change when tightinging. Loosening it seems fine. Why could this be?
I tried oiling the derailer with no luck.
The cable follows the bottom tube... the fits in a groove which directs it up towards teh front derailer... is that a source of friction?
I just put on new cabling.
Disconnect the cable from the derailleur and test to see if the derailleur is tight or the cable or maybe the shifter.
01-18-10, 04:25 AM
At least once a day - I get to paste this Copy & Paste regards front-derailleurs. Feel free to copy this. I wrote it, and won't sue:
Take the cable off the FD. Now install it from scratch as per Park Tool Repair:
When you have it properly trimmed and are ready for the cable - a new one wouldn't hurt - you want to pull the cable taut - not too tight, taut. Then apply 48 to 60 inch-pounds to the pinch-bolt. Then put it through it's paces.
It's always easier and faster to install a FD from square-one, than it is to make adjustments with it already attached. This tends to fix one thing - while throwing another out of kilter. Start fresh. You'll get it.
Adding an inline barrel-adjuster can solve many problems with the cable coming loose - or being too tight.
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