Power Meters - Zero Reset

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 What is a Zero Reset? 

The Stages SB20 bike has power meters that support a zero reset function. 


Zero Reset tells the vertically positioned crank power meters: "Torque should now be zero Newton-meters (Nm)". This allows subsequent readings to be made from a correct starting value. It's like setting 0 lbs/kg on a bathroom scale.

Here are things that commonly affect the starting value:

1. Different pedals.

2. Temperature or humidity changes.

The Left:Right numbers you see in the Stages app are a representation of the amount of torque that will be added or subtracted from each PM reading.

Zero Reset is not Calibration

A zero reset does not "calibrate" the power meter's primary function: measurement of force as you push the pedals.   


To do minor Stages power meter calibration see:

Stages SB20 - Measuring Torque Against Factory Specifications

Comparing Power Meters with ZwiftPower


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