I finally finished reassembling the Nishiki frankenbike I've been working on. Most of the original components are of a good quality (SunTour, DiaCompe, Sugino), but one problem I've had is that the rear derailer is WAY TOO SMALL.
With a double crank (50,40 -ish), and a 6 cog freewheel, only 3-4 of the 6 cogs can be used with each chainring, without binding the chain or having the derailer bend back so far it can't wrap it all up. And this is after a couple hours of derailer tweaking/chain resizing, etc.
Has anyone ever seen a bike designed with such a woefully inadequate R Der? I'm thinking of getting a Shimano Sora 8 speed derailer from Nashbar, anyone know how well that'll work with friction shifters?