A worked example
2100 mm circumference, 50/25 gearing and 90 rpm give 22.68 km/h.
Gear speed
Calculate theoretical speed from cadence and wheel circumference.
YOUR LITTLE WORKBENCH
ON YOUR DEVICE ✦Gear speed
Loading your local workspace…
THE METHOD / 01
A clear wayfrom start to finish.
km/h = circumference in mm × front/rear × cadence × 60 ÷ 1,000,000.
Keep the assumptions clear
Ideal drivetrain only; no wind, gradient, power or real-world speed prediction.
A FEW USEFUL ANSWERS
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