>
> The 93 cranks, their 86bcd cousins, as well as the similar SR Apex cranks
> are possibly the 3 most troublesome '70's cranks in terms of using modern
> chain.
> Credit the thick spider tabs and rings themselves, which lack the beveled
> inner side below the teeth.
>
Personal experience certainly varies. I run a 93 with 105bis inner and
outer. I have used both 7 and 8 speed chain.
The shifts are quick and positive. Could it be the derailleur? I am
running a Simplex Super LJ.
--
Lynn Travers
Hazelwood, Missouri USA