How does that frameset compare aerodynamically with the P4? P5?

its about the same as the p4 supposedly.

Which is strange since for years, we've been hearing that sloping geometry 'ain't aero' because the top tube gets in the way.

Results are up on Tren's Facebook

Are you racing this weekend? Piru or Buellton? I'm doing the Crit at Buellton and maybe the 20K TT on Sunday.

Results are up on Tren's Facebook

Are you racing this weekend? Piru or Buellton? I'm doing the Crit at Buellton and maybe the 20K TT on Sunday.

Is the Quarq on your road setup a GXP model? If so which BB adapter are you using to get it to work in the BBright of the S5? I bought an S5 a couple of days ago not really thinking how to get my power meter over to it...

Tom
finally got my S5 and used it as a TT bike yesterday. first time doing that particular event and do not have comparative data. It certainly felt fast and I had pretty good result.
anyway I used a Specialized bottle on bike during race and to fill the space a la P4. I never drink during straight forward TT. In your experience with this bike and bottle set up do you think you get aero benefit with bottle there or
would it be "better" without any bottle at all since I am not using it for fluids?
thanks
Rob

Well...I spent a lot of time trying to "repurpose" that open hole behind the stem and the 2 derailleur cable holes as the rear brake cable entry. It's actually intended for the Di2 cable harness entry point, but one of the things that bugs me about the S5 is the rear brake cable entry into the top tube. With it on the bottom portion of the tube, the cable is invariably routed out and forward and looped around (with lots of housing "hanging in the breeze"). Even with it going up through the middle of the Look Ergostem like I have it there, it still "pops out" to the side more than I'd like. I had made a couple of "cable guides" that plug into that hole and then turn the cable rearward towards the rear brake cable exit, but the material I made them out of wasn't up for the task :-/ So...I still intend on making that modification at some point.

Also, I think I will eventually replace the Ergostem with a -45d, 120mm stem. That's what I had calculated I needed, and it turns out it's exactly correct, but for the first cut I wanted to just use the Ergostem to get the bar into the right pad stack and reach spot and then measure what the stem needed to be to confirm.

Oh...and I'll probably figure out something different for the Garmin 500 mount.

Other than that...oh, maybe I'll try some alternate wheels ;-)

Hey Tom just wondering of you figured anything out for using di2 hole for rear brake I thought of running a full cable housing tru to back brake but there must be something available to use as cable stop

Also not sure if you managed to field test vs "old" tt bike , my own Testin should hopefully be done Sunday weather permitting Now that I have tt bars setup

What am I missing here Tom, I thought the lines were meant to overlap?

How do you calculate rolling resistance? I used an r4 aero front and tangent clincher rear with Michelin latex at 110psi for a race on good but not great roads.