Inside the Magazine: Derailer Hangers

by Byron on Jul. 21, 2013 at 6:53 AM

As it breaks in, the Di2 9070 servo motor sound changes to that of a tiny, robotic screech owl call, indicating what chainring you’re in, protesting so much shifting.

Whir, shift, whir. You get used to the sound and can tell up from down.

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