Reading the AeroLab patent paper was very insightful education about air flow and compression effects ..

To the OP: Some power will come back by time if the body can adopt to the new position and just to ride harder is not always stopping the watch sooner ;-)

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___/\___/\___/\___ the s u r f b o a r d of the K u r p f a l z is the r o a d b i k e .. oSo >>

Interesting patent! Thanks for the link.

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Damon Rinard
Engineering Manager,
CSG Road Engineering Department
Cannondale & GT Bicycles
(ex-Cervelo, ex-Trek, ex-Velomax, ex-Kestrel)

What saddle are you on? Effective seat tube on the bike? Your hip flexor measurement from your Retul fit?

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Robert Driskell
Certified Master Body Geometry fit Technician
Certified Master Retul Fit Technician
Zipp Service Course Specialist
Bikes Plus Pensacola Florida

Yes, as I can eyeball running mechanics. This does not mean that I can tell anyone that their ground reaction force reduced 3% with a change without force plates, but I can tell with reasonable certainty when GRF goes up and down. This is because there is some general patterns in running (cadence, impact sounds, leg stiffness etc) with correlate closely with GRF just as there is general patterns with correlate closely with cda (horizontal sternum, narrow and tight cockpit, proper saddle height etc).

Are you also anti-swimcoach? Because swim coaches cant verify just how much drag sinky scissoring legs create and report in a validated metric?

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Endurance coach | Physiotherapist (primary care) | Bikefitter | Swede

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Yes, these findings are inconclusive. Adding stack usually raises cda, going narrower usually lowers cda, tilt can do anything. I did these changes and using only BBS Aero tool it seems like a narrower, higher and tilted setup made me faster, but, race times did not reflect this. Because of weather on race day? Maybe this suit is slower than the castelli i used last year? Because if the new setup? I'm already pretty dialed in this position and changes here are not obvious anymore, and need more careful testing. For the absolute majority, this is not the case.

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Endurance coach | Physiotherapist (primary care) | Bikefitter | Swede

Your times don't reflect your expectations because you have no idea what impact they had on your CdA. This is my point.

Put some pants on and get rid of the Tempor.

You have no idea how that will impact my cda.

Jokes aside. It's easy to get most people aero on the bike. Estimating what 15mm extra stack does, if it's better or worse to move pads in some 20mm, if 7 degrees of tilt are more aero or just more comfy is not really possible and it's not our debate. That shit needs more careful testing, more than just riding a standard route a few times and using BBS aero analyzer. Because it SEEMS like my new setup is faster, and that race times were simply slower this year.

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Endurance coach | Physiotherapist (primary care) | Bikefitter | Swede

Skin is slow. I have lots of data on that.
The Tempor is fast, but yet to be fastest, in one position (and is a freaking parachute if you deviate). I have plenty of data on that too.

Are you... extrapolating from others data to draw conclusions about my equipment choices without testing?!! You charlatan!

I wear speedos to keep it fun, honor the roots.

I wear the tempor because the flat, stingray shaped tail covers my ponytail well. And it looks bloody crazy 8-) With tilted aerobars I have no issues to maintain a decent head position (like the one in the picture) for ~5h with only very short deviations (when grabbing bottles for example). For IM's and longer, some comfort is a good idea.

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Endurance coach | Physiotherapist (primary care) | Bikefitter | Swede