Friday, December 14, 2012

How to Calculate Sprocket Speed


How to Calculate Sprocket Speed

How to Calculate Sprocket Speed thumbnail
In a fixed gear bicycle, the sprocket's rotational speed equals the wheels'.
The speed of the sprocket in a bicycle or similar vehicle depends on the overall vehicle's linear velocity. The faster the vehicle travels, the higher the angular velocity of its wheels. This angular speed transmits in full to the sprocket. The sprocket's linear velocity, in turn, depends on its angular velocity. With a steady angular velocity, a sprocket with a greater radius runs at a higher linear speed.

Instructions

    • 1
      Multiply the distance the vehicle travels in feet by 0.3 to convert it to meters. If it travels 100 feet: 100 x 0.3 = 30 meters.
    • 2
      Divide your answer by the time, in seconds, the vehicle takes to cover this distance. If it takes 2 seconds: 30 / 2 = 15 meters per second.
    • 3
      Divide your answer by the wheel's radius, measured in meters. If the wheel measures 0.4 meters in radius: 15 / 0.4 = 37.5 radians per second. This answer is the angular velocity of both the wheel and the sprocket.
    • 4
      Multiply your answer by the sprocket's radius, measured in meters. If its radius equals 0.2 meters: 37.5 x 0.2 = 7.5 meters per second. This is the sprocket's linear velocity.


Read more: How to Calculate Sprocket Speed | eHow.com http://www.ehow.com/how_7769511_calculate-sprocket-speed.html#ixzz2ExDse12B

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