Does anyone know approximately when triple chainwheel cranks came into existence and which manufacturer developed them? Was there such a thing as a triple cotterred crank? And was there a corresponding rear derailleur to the introduction of the triple?
The earliest I know is the Campagnolo NR triple matched to Shimano GT, but I'd like to you know if there were others, earlier than the Campangolo and which rear derailleur went with it.
Thank you.
Cheers.
Tom Hayes
Chagrin Falls, Ohio