How to Set the Power Meter Zero Offset

Manual Zero

Performed through a cycling computer. This function, if available, is often referred to as a 'Power Meter Calibration' (or similar) within the cycling computers Owner's Manual. Follow the below process if your cycling computer is capable of this function. 

1. Rider must be off the bike and un-clipped from the pedals.
2. Place the drive-side crank arm in the 6 o'clock position. 
3. Initiate the 'calibrate' command as instructed in the cycling computers Owner's Manual.
   **DO NOT MOVE THE CRANK**
4. Within 3-5 seconds the cycling computer should indicate 'Success' and will often display the Zero Offset number. 

What Should The Zero Offset Be? 

Auto Zero

Performed by rotating the crank backwards 5 complete revolutions. An Auto Zero can be performed with the rider on the bike while coasting.

Performing an Auto Zero will NOT display a Zero Offset number on the connected cycling computer. 

MagicZero

A new feature starting in firmware 10, MagicZero automatically sets your zero offset as you ride.