Bicycle Mechanics - Next Question - Chainrings for Shimano 9 speed?

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mbtigger
08-30-12, 06:02 PM
In upgrading my bike I was thinking I might keep my old crankset for now - but I imagine I would likely need a new set of chanrings in moving up to a 9 speed. What am I looking for in chainrings that would 9 speed compatible? Thanks in advance
MB

Bill Kapaun
08-30-12, 06:14 PM
What do you have now?

For a brief time, I was using a cottered double off an early 70's 10 speed with a 9 speed cassette and had no issues.
mbtigger
08-30-12, 08:56 PM
After more researching, I ran into several stories about folks who converted 27" tire frames to 700 CC. There were ocassional problems with striking using the original 170mm crankset. I decided to go ahead and buy the 165mm Shimano Sora Triple chainring Crankset that is supposed to work with 9 speed chain.

alcjphil
08-31-12, 07:31 PM
I don't know why there would be a problem if you converted 27" wheels to 700c. 700c wheels are smaller in diameter than 27" by 8mm. If there was a problem with toe overlap after the conversion, it was worse before