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Blog

The physics and tactics of gravity racing

Essays from the timing data. Each post takes one idea, one race and the numbers the broadcast doesn't show, and works out what actually happened. Openly AI-assisted; the methodology is at the foot of every post.

BLOG // 03 // WHY DOWNHILL IS HARD TO PREDICT · 2025–2026

Obvious at the Line

Downhill is almost impossible to call before the gate drops, and impossible to argue with the moment the winner crosses the line. Two seasons of timing data on why the most open race in sport looks inevitable in hindsight.

Read post → ~9 min · UCI / Chronorace
BLOG // 02 // LOUDENVIELLE · 2026 · ELITE MEN & WOMEN

For Once, the Fastest Rider Didn't Win

At Loudenvielle the order on paper and the order on the day came apart. The winner was only fifth-fastest across the weekend, and the two quickest men finished third and twenty-third. Everywhere else this season, the paper order has held.

Read post → ~6 min · UCI / Chronorace
BLOG // 01 // MONA YONGPYONG · 2026 · ELITE MEN

The Traction Budget

Every input on a downhill bike draws from the same finite pot of grip. Braking, cornering, loading the bike. The riders who go fastest spend it best. Amaury Pierron had the World Cup opener won with a corner to go. This is where it went.

Read post → ~7 min · UCI / Chronorace
Gravity Lab // Beyond the broadcast.
BLOG · Not affiliated with the UCI or any team · sam@gravitylab.live