I'll throw a couple more on here:
Shimano Positron: the original index shifting for the masses (ignoring Sturmey Archer et al) where a solid metal wire both pushed and pulled the springless rear derailleur.
This cool system is the bane of shop mechanics who have to explain that, yes, the customer will have to replace the entire shifting because parts don't exist and no, we can't just "throw a cable on it"
Ive got a few spare "cables", and maybe a shifter and a derailleur somewhere back home in Hungary :) Those were already like a decade old when I was born...
I'll throw a couple more on here:
Shimano Positron: the original index shifting for the masses (ignoring Sturmey Archer et al) where a solid metal wire both pushed and pulled the springless rear derailleur.
This cool system is the bane of shop mechanics who have to explain that, yes, the customer will have to replace the entire shifting because parts don't exist and no, we can't just "throw a cable on it"