How Do You Calculate Torque in Bicycle Chain Drives?

AI Thread Summary
To calculate torque in bicycle chain drives, the minimum torque on the back wheel can be derived from the pedal torque multiplied by the gear ratio, which is the number of teeth on the rear sprocket divided by the number of teeth on the front sprocket. Maximum torque on the back wheel is similarly calculated, considering the force applied by the cyclist on the pedals. The front wheel does not experience torque in this scenario, as it is assumed to be unaffected by rolling resistance or acceleration. The discussion emphasizes that the calculations focus on the relationship between pedal force and the resulting torque on the rear wheel. Understanding these principles is essential for analyzing bicycle performance and mechanics.
mazz1801
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Its not an actual homework question just principals I am unclear on.
Its in relation to a standard bicycle being driven by a rider

How would I calculate the minimum torque on the back wheel?
How would I calculate the maximum torque on the back wheel?
How would I calculate toque on the front wheel?
 
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Minimum and maximum with respect to what?
 
With respect to the force the cyclist applies on the pedals.
Neglecting air resistance
 
Front tire doesn't have any torque (ignoring rolling resistance, or acceleration of bicycle).

Rear tire torque = (pedal torque) x (number teeth rear sprocket) / (number teeth front sprocket)
 

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