Thread: Individual Chain Rings
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Old 08-29-12 | 08:59 PM
  #11  
FBinNY
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From: New Rochelle, NY

Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter

Originally Posted by Al1943
Are you sure about that? The Shimano site shows that the current SORA triple has 130/74 BCD with 52-39-30 chainrings. All of the Shimano triples with 52-42-30 chainrings that I'm familiar with are 130/74 BCD.
No, I'm not sure, I ride Campagnolo Chorus on road, and my older stuff is either Campy or Sun Tour.

My first instinct was that as a road set it would be a 130mm, and I was going to post that a 34t wasn't an option. But I didn't want to be wrong, so I went to the Shimano site, and the first Sora crankset that came up was this one a 110mm double road. Not being a Shimano spec expert I went with that, not having any idea that Shimano would make a 110bcd double and a 130bcd triple in the same model.

If you're familiar with my posts, I shy away from detail specs, and usually suggest people either measure or look them up for themselves. This is a good example why.
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