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Rear gear (Derailleur?) adjusment screws?

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Rear gear (Derailleur?) adjusment screws?

Old 10-17-05, 04:55 AM
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gp91
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Rear gear (Derailleur?) adjusment screws?

Hi

As a newbie, I expect this is a stupid question, but I'm trying to fix my grandson's French (Derailleur?)gears and I would be grateful to know what the two small adjusting screws are for situated right below the (Floating?) rear selector arm and which lie parallel to it.

Thanks for any crumbs of information,

Gordon (gp91)

Perhaps this should go in the 50+ section!
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Old 10-17-05, 05:24 AM
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capwater
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Originally Posted by gp91
Hi

As a newbie, I expect this is a stupid question, but I'm trying to fix my grandson's French (Derailleur?)gears and I would be grateful to know what the two small adjusting screws are for situated right below the (Floating?) rear selector arm and which lie parallel to it.

Thanks for any crumbs of information,

Gordon (gp91)

Perhaps this should go in the 50+ section!
www.parktool.com has all the info you need, RD adjustment specifically is here:

http://www.parktool.com/repair/readhowto.asp?id=64
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Old 10-17-05, 05:25 AM
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Wil Davis
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Welcome to the board! There's lots of helpful people here, and lots of useful information to be had. This link might help you with the adjustment - good luck!

- Wil

PS: I just noticed that capwater beat me to the punch - but one thing I forgot to mention - the Partktool link deals with Indexed Shifting derailleurs - which are adjusted in a slightly different way to the older friction levers. In your original post you didn't mention which type of shifters you were attempting to adjust.

Last edited by Wil Davis; 10-17-05 at 05:39 AM.
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Old 10-17-05, 05:29 AM
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sestivers
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They're called "stops." You'll see why as I try to explain...

View the bike from the rear. One of the screws will stop the derailleur from moving too far to the right and prevent the chain from being pushed off the smallest rear cog, even if the shifting cable is completely loose. The other screw will stop the derailleur from moving too far to the left and prevent the chain from being pushed off the largest rear cog and into the spokes, even if the shifting cable is pulled too far/tight.

If you look closely at the mechanism, you can see the little tabs that will rest on the tips of the screws when you shift to either the largest or smallest rear gear. It will be easier to see if you screw the screws all the way in... you will have to unscrew them partially later to get it to work correctly. From there I think you can figure it out.
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Old 10-17-05, 05:38 AM
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gp91
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Got it! My thanks to you all.

(I wonder if this is the way to reply to replies?

Gordon
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