Originally Posted by
Lazyass
Does Di2 really have issues on rough roads? I read about a lot of teams in the TDF switching to mechanical for the Paris-Roubaix stage last Sunday, and the ones who didn't ran a 44 or 46 small ring so they could still race if their bike quit shifting on the cobbles.
Sagan won on a Specialized with mechanical DA. I can somewhat understand the choice. Mechanical has a greater travel to the levers, especially going to big ring or smaller cogs. I could see where the extremely bumpy surface could mean a possible inadvertent button press if riding the brakes and getting bounced around. I also read some were using an Ultegra rear mech with a clutch, which helps prevent chain slap and bouncing off the rings,