This is a longer-term update: I've ridden with the eTap Aero group on my Cervelo P5 for pretty much the whole of the 2016 season, from mid-March through to my traditional season closing event, the Duo Normand in late September. During this period, the set has performed flawlessly. Until the end of the season, that is - see the end of this report for more on that.
I’ve been something of a retro-Luddite when it comes to gear-shifting technology. Party this is because I had several 9 speed race wheels, and I wanted to maintain interchangeability between bikes, and (I am embarrassed to admit) I found it difficult to figure out which parts I’d need to buy to set up a TT bike with Shimano Di2.
Enter SRAM’s new electronic gear system, eTap. For road bikes, this is a pretty straightforward system. Each brake lever has one gear change switch, and it operates the derailleurs wirelessly. Satellite shifting switches (the ‘’blips”) allow shifting from the top of the bars or clip-on aero bars. The right hand control shifts the rear mech up, the left control down. Pressing both controls at the same time changes the front mech either down or up, depending on which position the mech is currently in.