Drivetrain compatibility
02-25-05, 09:17 AM
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Drivetrain compatibility
Hi, I had a quick question about my MTB drivetrain. I have a raceface crankset and a Shimano rear cassette. I've had some very good mechanics work on the shifting and it seems that there is always a space where the chain will rub. Is there a compatibility issue here, I'm looking at buying a new cassette, are there any that anyone would recommend?
Eric
Eric
02-25-05, 10:10 AM
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Moved to a forum where you might get more responses. 
02-25-05, 10:29 AM
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Originally Posted by Raid1280
Hi, I had a quick question about my MTB drivetrain. I have a raceface crankset and a Shimano rear cassette. I've had some very good mechanics work on the shifting and it seems that there is always a space where the chain will rub. Is there a compatibility issue here, I'm looking at buying a new cassette, are there any that anyone would recommend?
Eric
Eric
02-25-05, 11:23 AM
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Crankset has nothing to do with the cassette, if that's what you're asking. If you are trying to use the big ring/large cog or small ring/small cog combos you will always get a rub. Crosschaining is not your friend.
02-25-05, 11:28 AM
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Originally Posted by Raid1280
The rubbing takes place on the front derailleur, depending on the gear it takes place on either side. I wondered if I needed to widen the front derailleur cage? Also I have quite a bit of mileage on this old Shimano cassette, 4 years of adventure racing and training and perhaps the cassette is worn? As of now this is my drivetrain setup:
Shimano XTR square BB
Race Face Crankset
Shimano Deore Front Derailleur
Shimano Deore Rear Derailleur (I'm replacing this, had an accident with it in the last race)
Shimano Cassette (I'm replacing this also)
I was thinking maybe with a littler wrench work I could get just about any 8-spd cassette to work with the Race Face crank. What do you guys think?
Eric
Shimano XTR square BB
Race Face Crankset
Shimano Deore Front Derailleur
Shimano Deore Rear Derailleur (I'm replacing this, had an accident with it in the last race)
Shimano Cassette (I'm replacing this also)
I was thinking maybe with a littler wrench work I could get just about any 8-spd cassette to work with the Race Face crank. What do you guys think?
Eric
02-25-05, 01:49 PM
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Check out a couple of things: First, you want to set your front deraileur so that the bottom of the cage just misses the top of the big ring without touching it when you shift. You will also want to ensure that the center line of the FD cage, when viewed from above, is parallel to your chain rings. Finally, you may want to try some different sized spacers between the smallest ring and the crank. Mine were too large to work well with 9s FD and chain (originally 8s crank)
