on 10/19/04 7:10 PM, Chuck Schmidt at chuckschmidt@earthlink.net wrote:
> Anyone have a 51 tooth Record 151mm bolt circle chainring they can sell
> me? These were made from 1958 till 1968...
>
> Chuck Schmidt
> South Pasadena, Southern California
>
> .
> .
> _______________________________________________
Sorry Chuck,
I don't have the chainring you're after.
I just wanted to mention that 51 was the preferred chainring for roller racing. 51 x 14 with an average tire will nail the 303" roll-out restriction.
I suspect that in inch pitch days the biggest gear that guys would have was a 25 x 7 and the tires were fatter then, so it rolled out to 303". Any other theories where the 303" came from?
Regards, Jamie Swan - Northport, N.Y.