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Old 02-13-04, 12:10 PM   #1
55/Rad
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Shimano A and B Type Chainrings

What's the difference? I was told one was for a double and the other a triple but there's got to be something more....

Thanks.

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Old 02-13-04, 05:51 PM   #2
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One is matched up to a 42 inner ring and the other to a 39.
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Old 02-13-04, 06:20 PM   #3
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Quote:
Originally Posted by Gonzo Bob
One is matched up to a 42 inner ring and the other to a 39.
... and it really does not make any significant difference whatsoever, particularly if you shift properly, by easing up on the pedal load, instead of "power-shifting."
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Old 02-13-04, 06:22 PM   #4
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So which is going to work BEST with my 39?

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