Stages SB20 - Zwift Connection Error

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For almost two years, the SB20 bike has had an issue connecting to Zwift.  



On seemingly random occasions, the Stages Bike is not shown as a Resistance option on the Paired Devices page.


This bug is easy to reproduce on iPads and iPhones using Bluetooth. I'm not sure about any other devices or ANT+.

Recreating the SB20 Resistance Bug

Before starting make sure the SB20 is turned on and you have woken-up the cranks by doing a few pedal revolutions.




1. Open the Paired Devices page.  

2. Select the Left Crank for both Cadence and Power Source.  

3. You will likely see the Stages Bike in the Resistance box.


4. Don't continue in Zwift.  Instead, exit and restart the Zwift app.




Here's the Bug:




5. Return to the Paired Devices page. 

6. You will see Left Crank automatically selected for both Cadence and Power Source.

7. The Resistance box is now empty!  Clicking Search shows nothing.



Workaround for the Bug:



8. While still on the Paired Devices page, click the Cadence box and then Search. Select the Stages Bike for Cadence.

9. The Stages Bike is now shown in the Resistance box 🏆.

You can optionally change Power Source to Stages Bike.



Isn't it good to use the Left Crank for Power Source? 

Some riders benefit from using the Left Crank for Power Source. Most can use Stages Bike. Which is right for you? See: How to Pick a Zwift Power Source. 


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