Group;
In my box of stuff I have an old Simplex derailleur. I'm guessing 40s. Must be late due to the war. I haven't seen it yet on any pix. It has one arm from the upper pivot and an expanding coil spring to do the shifting. I'd guess it was a 3 speed.
I can supply pix. Does anyone have any info?
Steve Leitgen
La Crosse, WI