Shimano Components Compatibility
12-19-06, 12:51 PM
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Gunga galunga
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Shimano Components Compatibility
How critical is it to follow shimanos component compatibility lists?
Is it just a spec for the ideal racer?
What if you are just trying to piece a mountainbike together without buying new stuff and utilizing older items?
Is it just a spec for the ideal racer?
What if you are just trying to piece a mountainbike together without buying new stuff and utilizing older items?
12-19-06, 01:00 PM
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It really depends on exactly which components you're trying to use. The Shimano compatibility chart is conservative and many of the specs can be exceeded. The number of cassette cogs need to match the shifters.
12-19-06, 01:15 PM
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Yeah, Shimano likes to try to get you to keep buying new stuff so they have these charts that are misleading at best. You can actually mix a lot more than they would have you believe.
What do you have in mind?
What do you have in mind?
12-19-06, 02:22 PM
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Shimano LX
It nine speed. Thanks for the info, really got to pull on it!
Last edited by josher114; 12-21-06 at 07:30 AM.
12-19-06, 02:51 PM
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Originally Posted by josher114
How critical is it to follow shimanos component compatibility lists?
Is it just a spec for the ideal racer?
What if you are just trying to piece a mountainbike together without buying new stuff and utilizing older items?
Is it just a spec for the ideal racer?
What if you are just trying to piece a mountainbike together without buying new stuff and utilizing older items?
There are some specific compatibility issues. I discuss most of 'em at:
https://sheldonbrown.com/speeds
Sheldon "Compatibility" Brown
12-20-06, 05:15 PM
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Originally Posted by josher114
I bought he LX combo shifter/brake levers. I though I would give them a try, they claimed to be 9 speed on nashbar, but they seem to be only 8 speed? Over and over i counted 7 clicks!!!! So the LX rear derailer is a 9 speed. Plus, I got a 48 teeth Crankset, and only the M580 LX front derailer that will not accommodate the 48 teeth! Bad buy, or can i get that to work. IT claims its only good for 44 teeth max on crank. thanks for input
The shifters matter in this question, the rear derailler doesn't. Rear deraillers may be labeled "9 speed" or whatever number of speeds, but that's irrelevant. All Shimano rear deraillers made for indexed shifting, except pre-9-speed Dura-Ace, have the same cable-pull ratio and are compatible with each other. You could use a 105 derailler from 1987 that came with 6-speed indexed freewheel, on a drivetrain with 10-speed Dura-Ace shifters and cassette.
If your front shifter only has seven clicks then you're in trouble. But this is tricky, often the last click at one end makes very little noise but is still its own stop, so you may have 9-speed shifter still; I'd be very surprised if Nashbar mis-labeled shifters.
The front derailler is probably fine. It's optimized for a 44t large ring, but should work okay with a 48t. I've used a Suntour front derailler designed for 46t large ring with a 50t ring and it's fine. People go over larger gaps and it's usually fine unless you're going from 42t rating to 53t rating, or something like that.
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"c" is not a unit that measures tire width
"c" is not a unit that measures tire width
