[usrusr]

Actually I was referring to the pedal thread thing that's an amazing improvement over the hassle pedals would be if they were both right-handed. And those pedal threads are still in use with far less change than their bearing innovations. There have been competing thread standards since then (all using that improvement), but much less than in any other place on the bike. Chances are that you could install the latest clipless carbon powermeter pedals (featuring 64MHz Cortex-M4s) on many pre-war bikes, from back when world wars didn't have an episode number. And they'd just work.