Re: Campag 9/10sp chain on Biopace rings?

"Nick Payne" wrote:

> Well a C10 chain works fine on TA Cyclotouriste rings, which
> are a much older design. The teeth on those chainrings, are,
> according to my vernier calipers, 2.1mm thick. That's compared
> to 1.94mm thick for a chainring that explicitly states that
> it's 10-speed compatible.

This seems to be a new "standard" for 3/32" sprockets.

I noticed that my new spare SRAM 3-spline sprocket for my Spectro
S7 internal-gear hub looks thinner than the previous ones I'd
bought (both 3/32" nominal).  My measurements roughly agree with
yours.

Hopefully the metallurgy has improved so that there's no
accelerated wear.

John