Re: Rear derailleur initial cable tension
- From: "Lou Holtman" <lholremovethis@xxxxxx>
- Date: Tue, 31 Jan 2006 17:03:46 +0100
"Josh Hassol" <jhassol@xxxxxxx> wrote in message
news:1138716804.065024.76940@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Good morning, all -
>
> When installing a new rear derailleur, how tightly should the cable be
> pulled, prior to any STI adjustments? I just installed a rear
> derailleur, and I set the shifter to the highest gear (smallest cog),
> and then pulled the cable snug, but not tight. I'm having trouble
> getting the indexing to work smoothly and accurately in both
> directions, and I suspect the cable tension is wrong, but no amount of
> tweaking (with the barrel adjuster) seems to fix it. Its a 105 9-speed
> derailleur, and a Dura-Ace 9-speed STI shifter.
>
> Any advice would be appreciated.
Bolt on the new rear derailleur (check derailleur hanger),
Shift to highest gear (smallest cog),
Adjust (high) limit screw so that the upper pulley is straight under the
smallest cog,
Screw the barrel adjuster or adjustscrew at the back of the derailleur
almost in,
Install (new) inner wire and pull it tight and tighten the bolt,
Unscrew (high) limit screw a little, you will see that the upper pulley will
move a little outward,
Adjust with the barrel adjuster or adjust screw (preferred) at the back of
derailleur so that the upper pulley is straight under the smallest cog
again,
Put on the chain and shift up and down. Only a little tweaking will be
necesarry if the derailleur hanger is straight, the inner wire moves
smoothly and the upper pulley doesn't have to much play.
Lou
Lou
.
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- From: Josh Hassol
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