Originally Posted by
base2
All these vintage shennanigans sort of don't make SRAMs electronic derailleurless double crankset with derailleur shifting seem sane, logical.
Sram crankset patent.
That being said the linked article contains this link about the Bellevue Washington based
Browning Automatic Transmission. In looking adocumentation, it appears to be what the
Rodriguez Disruptor is based on. R&E Cycles is Seattle based. The distance between these 2 motropolis' is about 10 miles...They've gotta be connected, somehow.
I guess it goes to show that
some ideas are before their time.
Here’s another bit on that story….The Disruptor is not the first auto transmission to come out of the Rodriquez shop. At the Track Nationals in Seattle in 1987, Ron Storer, I think, rode an auto transmission in the kilo event. Angel R. Did the design and build. Control mechanism was build around a Cateye solar, which had a cadence feature. Exactly how the gear changed is something I didn’t understand then or now but I saw the bike at a distance and the bike did not have a derailleur.
Storer was of course DQed for riding what was ruled to be a non fixed gear bike.