|   how do you measure size of chainrings? | cheetos316
Jan 17, 2002 12:42 PM | | How do you measure if a chainring is 94 or 110? Especially when it is a five arm?
Thanks |
| Easy | Fiver
Jan 17, 2002 2:29 PM | | With a four-arm crank it's simple--just measure the distance from the center of one bolt hole to the center of the bolt hole opposite. With a five-arm crank, you can measure the distance from the center of one bolt hole to the center of the bolt hole *next to* the first hole. If that distance is 64.7 mm, it's a 110 mm ring. If the distance is 55.4 mm, it's a 94 mm ring.
All numbers from Sheldon Brown's website. |
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