Ultra-6 worked just fine with SedisSport. So SedisSport, any of its Sedis/Sachs succsssors, or any of the more recent "6/7 Speed chains" should be fine. IIRC, Suntour sold a chain to be used with the Ultra-6, but I never bothered buying one and don't think I ever knew anyone who did. SedisSport was probably the most popular chain at the time, so most people just used that.
Regards,
Jerry Moos Big Spring, Texas, USA
David Bean <beandk@rcn.com> wrote: Going thru my collection of old freewheels, I found an Ultra 6-speed that isn't too worn. I haven't used one of these before; should any chain made in the last 10 years or so be narrow enough to work with it? Is there something I should measure/check?
David Bean
Arlington, MA USA
beandk at are-see-enn dot com