Just a heads up that eTap does not really play well with Cervelo R5 and S5 (at least with a 54cm). Actually it also doesn't fit on a few others such as Colnago (both a 50S and a 54 traditional) we tried and from my frantic web search seems others also have the same problem with Williers. Problem is entirely around the front derailleur braze on position - it's far too high for a 50/34 and a bit too high on a 52/36. Additionally, once you have it as low as it goes on the 52/36 then the lower limit screw impacts the crank arm with both Dura Ace 9000 and Rotor 3D. Solution so far has been to remove the lower limit screw - I understand in other markets people have been successful in getting a shorter limit screw from SRAM to address this. With these changes we have been able to get the front shifting to be acceptable but not to the level of Di2 or EPS. Disappointing, and I'd warn anyone else out there to test fit eTap before they go ahead and buy the grouppo.
Next step for me will be to try moving the derailleur down with a shim, something like the one Rotor sells to improve shifting with their rings.
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"Oh man, it's going to take days to kill all these people!" - Jens Voigt
Next step for me will be to try moving the derailleur down with a shim, something like the one Rotor sells to improve shifting with their rings.
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"Oh man, it's going to take days to kill all these people!" - Jens Voigt