The same watts. More speed. Measured.
A field aero test for time trial, triathlon, duathlon and gravel. A sensor on your bike measures your drag on the road, in your race position, change by change.
CdA: the number that turns watts into speed.
CdA is how much air you push. Lower it, and the same power buys more km/h.
A sensor on the bars reads air speed, pressure and wind while your power meter reads watts. From both, I work out your CdA on every steady run, and I cross-check your power against a second meter. Measured on the road, not simulated from photos.
Built to tell a real gain from noise.
Goal first
Your race, its distance and how long you must hold the position. A position you cannot hold is not fast.
Baseline
Repeat runs in both directions on a flat loop near Zug, so the wind cancels out.
Noise floor
I measure how much your CdA moves when nothing changes. Any gain smaller than that is not a gain.
One change at a time
Cockpit, extensions, helmet, suit. Each change tested on the road, never judged by eye.
Report
Your CdA with a range, watts saved at race speed, time saved on your course, and your final set-up written down so you can rebuild it after travel.
My own bike, before King of the Lake 2026.
I test everything on myself first. A new cockpit took my CdA from 0.280 to 0.266 m², about 16 W saved at 45 km/h, and it was the only change that cleared its own noise floor. Three race suits were tested the same day; one won on drag, consistency and comfort, and I raced in it. What did not work is in the report too, including a first estimate I had to correct. You get the same honesty.
| Rider | Change | Measured | Saved |
|---|---|---|---|
| Thomas LecomteTime trial, 2026 | New cockpit | CdA 0.280 → 0.266 m²likely range 4 to 27 W | 16 Wat 45 km/h |
| Kinga BazanDuathlon long distance | Extensions and position | Best ever 1-hour split2nd, Powerman Zofingen 2023 | 25 Wat 42 km/h |
“I did not think the extensions could be extended any more, but Thomas found a solution and opened up my way too crunched position. In September 2023 at Powerman Zofingen I rode my best ever 1-hour bike split in this position and finished second.”
Kinga BazanDuathlon long distance, age-group vice world champion
“The aero fitting was an important part of my preparation for my Swiss time trial title. We found a fast and, above all, more comfortable position, and his knowledge of equipment gave us real gains from swapping components. Looking forward to more nerd sessions.”
Noah BögliSwiss time trial champion 2023. Translated from German.
One test, one written report. Final price, no extras.
- About 3 hours on a flat loop near Zug
- Bring your race bike, kit, the helmets you want to compare, and a working power meter
- Weather: wet or very windy days are moved, at no cost
- Coaching clients: the result goes straight into your race plans
