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Gears
Gears The figure above shows a chain gearing system, which is the most commonly used in bicycles. The shaft driven system is more complex so I prefer to use the chain driven system in the schematics. Deraileur gearing systems usually allow to change between 2 or 3 chainring sizes and 5 to 10 rear… Read more
Random notes
Random notes 1 horsepower = 746 Watts. A professional cyclist can steadilly output 400 to 450 Watts of power. A fit cyclist can steadilly output 200 to 250 Watts of power. A casual cyclist can steadilly output 100 to 150 Watts of power. Q: How to determine the amount of power you can steadilly… Read more
Formulas
Formulas Definitions: Cad - Cadence (in RPM) Ct - Nr. of teeth in the front chainring Rt - Nr. of teeth in the rear sprocket D - Tire's diameter (in inches) S - Slope (5% = 0.05, 10% = 0.1, etc.) m - Total mass of the set: cyclist+bicycle+cargo [Kg] Bicycle's linear speed: V [Km/h] = Cad [rpm] x D [… Read more
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