How Do You Calculate Torque in Bicycle Chain Drives?

[mazz1801]

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?

 

[e^(i Pi)+1=0]

Minimum and maximum with respect to what?

 

[mazz1801]

With respect to the force the cyclist applies on the pedals.
Neglecting air resistance

 

[rcgldr]

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)