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Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

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Old 05-04-00, 07:02 AM   #1
robhudson
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I am having problems setting up the STI on my Shimano 600 rear mech, on my road bike.
Any suggestion?
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Old 02-27-01, 07:58 PM   #2
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Hmmm..... some clues

The first thing to do would to check(lubricates)or change your cables and housing. Then check the alignement of your derailleur hanger. check if mech's pivots are not too loose(scrap derailleur). Check the adjustement, cable tension, stoppers. Maybe your ratchet in shifter is broken.
If your chain and gears are too old, thay might shift real bad and chain would skip. A stuck pulley on your mech. A stuck mail on your chain(would cause chain to skip). Thats all it comes to my mind right now .

Alex, Bike mechanical
good luck
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Old 02-27-01, 11:12 PM   #3
Hunter
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Rear mech

Could you define the problem?
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Old 02-28-01, 02:24 AM   #4
pat5319
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How many miles do you have on your chain?
Have you just replaced a very worn chain or cog/cogset?
Have your cables been lubed or changed lately?
Do you have any frayed cables?
Has the rear end of the bike hit or rear mech bumped anything or hit anything?
Are the pulley wheels parallel to each other and the p. wheels and mech cage parallel cassette/freewheel cogs hen viewed from the rear?
Do you have any freewheel/cassette cogs shaped like shark fins or a little thick on the chain contact points?
When you gasp the mech cage and move it side to side does it feel "tight" or "sloppy".

Any of the above are signs of damage or wear to the parts or bike frame that need attending to.

If the above are OK, what sort of adjustment problem are you having?
Is it shifting off of the teeth into the spokes or dropout?
Is it shifting well on some gears and not so well in others?

[Edited by pat5319 on Feb 28th at 03:37 AM]
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Old 03-06-01, 05:15 AM   #5
Buddy Hayden
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Ihope you are using a compatible STI lever indexing ....to match your cassette ? this sounds kinda dumb but sometimes.....................
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