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Old 02-08-07, 10:34 AM   #1
daver42
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Pins & Ramps on a Double Crank (smaller ring)

Am I correct that the smaller ring on a double crank typically doesn't have pins and/or ramps? Thanks!
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Old 02-08-07, 10:37 AM   #2
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Yes. Double chainrings are often matched tho. There is a letter code stamped before the tooth count.
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Old 02-08-07, 11:27 AM   #3
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Same thing with the little ring on a triple.
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Old 02-08-07, 11:48 AM   #4
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Originally Posted by brice520
Same thing with the little ring on a triple.
Correct, the granny ring on a triple has no shaped teeth or ramps. That's what makes it so easy to change the typical 30T granny ring on a road triple for a more useful (for me anyway ) 26 or 24T ring. You can use any makers chainring with the correct BCD and not worry about orientation when you install it.
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Old 02-08-07, 09:02 PM   #5
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FWIW I've mixed the "matched" chainrings ("Oh my ghod, don't let them As get near them Bs!") and have yet to notice any decrease in shifting performance.
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Old 02-09-07, 09:42 AM   #6
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I've been using non-ramped and pinned rings recently and the shifting is acceptable.
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Old 02-09-07, 07:08 PM   #7
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I've been using non-ramped and pinned rings recently and the shifting is acceptable.
So have I and "acceptable"? Yes. Good? No.
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