For Sram Automatix Automatic Transmission Hub Inner Two-speed Bicycle V Brake Hub For Bicycle Modification - Wheels - AliExpress
schindelhauer bikes - Automatic gearing - how does it work? The SRAM Automatix 2-speed hub automatically shifts up a gear when you reach speed of around 16 km/h. When you slow down
sheldonbrown.com - New article about the SRAM Automatix two-speed hub -- http://sheldonbrown.com/automatix.html. We have information on maintenance, choice among variant models, and how to adjust the speed at which it shifts automatically.