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How to tell if chainrings are 10 or 9 speed

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How to tell if chainrings are 10 or 9 speed

Old 05-22-16, 01:16 PM
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Namida12
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How to tell if chainrings are 10 or 9 speed

Was garage sale exploring yesterday, and person was selling chain rings, had them labeled 9 speed and 10 speed. I could not find nor see any difference in markings, nor size when comparing them side by side, they looked identical.

53 and 39 chain rings.

JR
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Old 05-22-16, 01:56 PM
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It makes no difference, 9 and 10 spd chain rings are interchangeable.
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Old 05-26-16, 10:02 PM
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Shimano 9 speed crank with 53/39 chainrings: will the 10 speed Sram front brifter & derailleur shift the chain correctly? Or do I need a Sram crank?
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Old 05-27-16, 04:12 AM
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aren't 10's slightly narrower? I thought the machining of the rings means that the spacing is slightly different. I'd assume indexing might be the only slight issue?
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Old 05-27-16, 05:50 AM
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Should be stamped "9 S" or "10 S". At least mt Shimanos are.
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Old 05-27-16, 06:42 AM
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SRAM 10spd brifter/FD will shift ANY 9-10spd crank without difficulty. FWIW I have used 10 spd Campy FD on 9spd shimano and 9 spd FSA cranks without
a problem, and 9 spd Shimano FD on 10 spd Shimano cranks without a problem, and currently 11 spd Di2 on 10 spd cranks with a 10 spd chain.
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Old 05-27-16, 11:17 AM
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I'm using an SRAM 22 crankset with an otherwise 10-speed setup. Works flawlessly.
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Old 05-27-16, 12:59 PM
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9/10 work together no problem. Lots of experience with that mix.

I had a 10-speed chain on a 7-speed old Ultegra tri-color crankset, raced that way for half a summer when I was starting out. I got by, but that was not great -- would never recommend.

But chainrings are usually a little forgiving, and 9/10 Shimano mixes without issue.
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Old 05-27-16, 01:09 PM
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'speeds' is a back wheel thing . chainrings have tooth thicknesses like chain rollers have width, but they are not that different..

comparing 6 and 11 may be a more significant difference.
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