Urban Velo

SRAM Automatix 2-Speed Auto Shifting Hub

While visiting SRAM a few weeks ago in Chicago I had the chance to try out their new E-matic electric assist system firsthand, and also got a brief run-down of the Automatix 2-speed hub even if they didn’t actually have one on hand in the US offices quite yet. I was promised that there would be one on display at Eurobike and without fail it was the very first piece of tech I saw when I entered. Nevermind the shifter pictured with the $90 Automatix, the hub uses a centrifugal clutch mechanism (like a seatbelt) to shift between the two gears when a given rotational rate is eclipsed without any other user input. Available in either a coaster brake or rim brake version, the hub may not be suited to serious urban riders otherwise sporting a track hub, but it’s application on folding or more utilitarian commuter bikes makes a lot of sense. A low gear to get going, a higher gear once you’re rolling, nothing to think about but the ride.

3 Comments

  1. njSeptember 5, 2012 at 12:26 pm

    QBP has these in stock in both freewheel and coaster version. I like the idea, but the stamped hub flanges are a turn off to me.

  2. bergerandfriesSeptember 6, 2012 at 9:31 pm

    I love mine. I’m rocking one on my folding bike and it works great. Several Internet cycling shops have it for much less than the $90 MSRP.

  3. Martone Cycling Co Launch | Urban VeloApril 11, 2013 at 8:02 am

    [...] red, gold or silver. Each bike has a built in handlebar basket, largish 700 x 32c tires and a SRAM Automatix auto-shifting hub. Nevermind the website errors that says it has 26″ wheels and 700c [...]

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