Shimano FFS = late 70's/Early 80's "neu" drivetrain tech for lower budget bikes.......If it was such a good idea, we'd all be riding bikes now with some sort of FFS system, but I guess it wasn't that good afterall because of the resulting added wieght and menchanical drag, but as some noted, not a fatal thing on a....uhm....cheaper bike....But then Simplex also insisted that lots of Delrin was good for the biking masses......Looking back into cycling history curiousities like these can be weird and funny at the same time.

Chombi