Quote Originally Posted by mr brightside View Post
Saw the interview with him this evening, judging by what he was saying it sounded to me like a slack rear skewer, the slightest movement in the dropout will have the hyperglide trying to change up. I can't believe for a second his di2 was to blame, they can feel tight enough but slip under power.
With disc brakes there is no dropout, and there's no skewer as such. If the through axle is in, the wheel cannot move. And if it's not in you'd notice as soon as you pedalled.