You might have to replace the shifter and the chain, too, besides one or both derailleurs as Blueberry pointed out.
+1 on getting a mechanic to help you with the parts selection and do the installation. Drivetrain parts aren't necessarily interchangeable. Also +1 on at least considering a wider range cassette (which might still necessitate a new rear derailleur and definitely a new chain, but not all the other stuff).
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Thread: Replacing Gears
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12-30-2011, 02:27 PM #1
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12-30-2011, 03:17 PM #2
Cindy
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Also may have to change out the bottom bracket. For what it's worth you really won't be gaining much in the way of extra gears going from a double to a triple (maybe only one or two.)
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12-30-2011, 07:36 PM #3
In through the out door..
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Whoops - I did forget to list the shifter, didn't I
Just another reason to go to a mechanic
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