I've run across one, has fairly radical looking tooth profile with teeth that ramp up to full size teeth. I'm wondering if it was intended for some particular purpose ?
I'd be using it as a "standard" 7 speed on a friction shift 70's bike.
Should be fine. The tooth ramps are not all that different from a Shimano or a Sachs of the same vintage.
-- Andrew Muzi www.yellowjersey.org Open every day since 1 April, 1971
