Inside the Magazine: Derailer Hangers
by Byron on Jul. 21, 2013 at 7:53 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.…» Read More »