derailer tension

[probob]

i have a problem with my shinamo deore rear derailer, rear derailers are meant to provide tension on chain, and mines isnt providing me with a enough so my derailer and chain rattle about damaging my swing arm and causing my chain to jump,


i'm hoping theres a screw or nut to tighten to solve my problem, i dont think the derailer has simply worn out as its not very old,


all help much apreciated

 

[RIxce]

sounds like your chain is loose..try taking links out 1x1 till your happy with the tension--some slap is to be expected

 

[Fendercrazy]

Are you in the small ring in the front and some of the smaller rings in the back when it's slapping?

 

[probob]

it happens in any gear, but is worse in lower gears

 

[daveornee]

i have a problem with my shinamo deore rear derailer, rear derailers are meant to provide tension on chain, and mines isnt providing me with a enough so my derailer and chain rattle about damaging my swing arm and causing my chain to jump,


i'm hoping theres a screw or nut to tighten to solve my problem, i dont think the derailer has simply worn out as its not very old,


all help much apreciated

http://www.parktool.com/repair_help/FAQrindx.shtml
http://www.parktool.com/repair_help/FAQchainlength.shtml