No matter what I try I can't seem to get the chainring to sit in the middle of the two plates of my E13 XCX chain guide. I've tried all permutations of spacers I have and I can't get the thing to stop rubbing the outer section. Frame is a Cotic Soul with a 73mm bottom bracket shell. Crank/bottom bracket is Shimano Deore M590, with a Blackspire chainring set in the middle ring position.
Any help appreciated.
Thanks
Dave
I had the same and had to hit it with a rubber mallet until it bent over a tiny bit.
No amount of logical shimming would stop it rubbing so I just gave it a whack then tested then another whack until I was happy. Not had any rubbing since.
Andy
I had same prob with my c456,dependent on what size chainring,i found that putting chainring on the inside of the spider,also i unscrewed the two plates,found some plastic (4mm thick),cut a template out,then screwed back together,works a treat now!
EDIT;Doesnt have to be 4mm.
I have found it easier to shim the chain guide itself as opposed to bb but then what works for one frame/crank combo may not work for another.
Fitted one last night , used a couple of the provided shims, so two shims then the guide screwed up tight with the BB , so far all seems ok ,
Santa Cruz Blur Trc, 73mm BB 😀
Jeffus, what cranks are you using?
Had to file some of the inside of the guide on mine so it dropped low enough over my raceface turbine cranks that I didn't loose the chain. It's as close as it will go to the seat tube (73mm Solaris) but still rubs a bit when grubby
Im using XTR 980 , with a King BB 🙂
Where's it rubbing as if your in 1st or 9,10,11th depending on how many gears you run you will always have some rub at one end of the cassette range.