Don't have a definitive answer but I've got a couple 1938 Le Cycliste bike mags that show ads for various triple cranks. I have a feeling they go back a lot further though. Interestingly one was shown with the largest chainring in the middle.
John Price
Denver CO
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