Rohloff is as Close as you will get , now ..
They already Race those in 24hr MTB endurance events,
and Circum-Cycling the Globe in the least number of days, stunts..
Auzzie company even makes an electronic button shifter for Rohloff Hubs ..
hard to make durable gears out of anything but tempered steel ..
Last edited by fietsbob; 01-13-14 at 01:09 PM.