Bike Forums - View Single Post - 151 bcd chainrings?

04-22-09 | 06:05 PM

#18

Picchio Special

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From: Lancaster County, PA

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Quote:

Originally Posted by Bianchigirll

Hello are these older Campi? Nouvo/Super Record? I have a 48T and 50T. I don't think they were ever on a bike. will they work for you?

There are two issues:
1) The bcd (bolt circle diameter). This was 151mm on the original Campagnolo crankset from 1958 into the 1960's. This is what the original poster (OP) needs in:
2) 3/32 thickness (i.e. for road use). Track versions of the 151 bcd cranks and chainrings persisted into the 1970's, but these are 1/8 thickness, so they don't work with road ("strada") cranks.
The 144 bcd Campagnolo cranks were introduced in the early-mid-60's.
Technically, the cranks are "Record" (i.e. not designated "Nuovo" or "Super"), though there are "Super Record" (as opposed to "Record") chainrings.

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