It was my understanding that hubs were 120,mm, then jumped to 126mm for 6 speed, and finally up to 130mm for everything up to modern 11 speed.
So what's up with this 124mm hub spacing? For reference this is a large-flange Sunshine hub that came off a 1976(?) Windsor Carrera Sport. I've long since donated the frame and other parts, but I believe it had a 5-speed freewheel.
by gregn8r1