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12-27 ultegra cassette noise...(6 posts)

12-27 ultegra cassette noise...graveyard
Apr 7, 2002 12:43 PM
just swapped an 11/23 for a 12/27 ultegra cassette on a brand new full ultegra double drivetrain. i'm running a pc-89r chain. the chain rattles/makes noise when i'm in small ring/27 cog. it's not the derailer cages. any advice?
re: 12-27 ultegra cassette noise...Icefrk13
Apr 7, 2002 1:58 PM
Are you sure the spokes are not burshing aginst the inside of the cage?
re: 12-27 ultegra cassette noise...graveyard
Apr 7, 2002 5:38 PM
no, it's not the spokes. it doesn't sound especially horrible or dangerous, just unpleasant.
re: 12-27 ultegra cassette noise...4bykn
Apr 7, 2002 2:37 PM
12-23 to 12-27 is a big jump. Did you lengthen your chain? The noise may be an overly tight chain.
re: 12-27 ultegra cassette noise...graveyard
Apr 7, 2002 5:36 PM
yup, new chain. the length is dead on.
And one more thingKerry
Apr 7, 2002 3:48 PM
In addition to checking spoke clearance and too-tight chain, even if you did add the link (you likely should have), your idler cage or the upper idler pulley may be hitting the cogs. Put it in the work stand and make sure you have clearance. Use the "b" screw to adjust the clearance once you have the proper chain length.