Rider Biometrics & Frame Sizing

We compare rider biometrics against manufacturer frame geometry using Dr. Kim Tofaute (Ergon) ergonomic principles to optimize contact points, relieve joint strain, and maximize pedaling efficiency.

1. Rider Biometrics & Contact Points

2. Bike Specs & Bench Hardware

The Cycleomanias Precision Fitting Standard: Beyond the Basic Formula

“Most online calculators and basic bike fits use a formula invented in the 1980s that only measures from the crank center to the seat. The problem? You don’t ride barefoot on bare cranks.”
Why Our Measurement System is Superior:

  • Pedal & Cleat Stack Accounting: Different pedal systems and shoe soles create a 10mm to 25mm variance in leg extension. We factor in your exact pedal platform (Flat, SPD, Look, Speedplay) and cleat thickness.
  • Zero Knee Strain: A 10mm miscalculation forces your knee to over-extend or sit under-compressed thousands of times per ride.
  • Bilateral Tuning: If we add a shim or wedge to adjust for a leg length discrepancy, our dynamic algorithm instantly recalculates your saddle height so your effective leg reach stays perfectly balanced.