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STAC ZERO: Cadence

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Does the STAC ZERO Powermeter Support Cadence? 

The STAC Zero Powermeter supports cadence detection. Note that if you have a dedicated cadence sensor, we recommend using it. The Powermeter's cadence value will be an approximation.

How does it work? 

Much like detecting the pitch of a music note, the Powermeter model analyzes the varying force on the magnet array as your wheel speed varies during your pedal stroke.  If you have a really smooth pedal stroke, the cadence readings might vary quite a bit, as the wheel speed variations it depends on to do the calculation may disappear.

Does the Halcyon Smart Trainer support cadence?

The STAC Zero Halcyon is capable of detecting cadence in ERG mode, but you will require a separate dedicated cadence detector if you want a cadence reading in Sim mode.

To detect cadence in ERG mode:

  1. Open STAC Control Panel and connect to the trainer
  2. Select Halcyon Tweaks, and scroll down to Erg Mode Cadence Detection.
  3. Update the Big Ring Teeth and Small Ring Teeth fields to match the number of chain teeth there are in the gears you will be using in ERG Mode. We recommend using your fastest gear. On a typical road bike, these are 50 (big ring) and 12 (small ring).
  4. Use the toggle button labelled Enable/Disable Erg Cadence Detection. You should now see a cadence reading when you use other apps in Erg Mode. You can see your cadence in STAC Control Panel from the Logging menu, and on the Erg Mode Cadence Detection

To detect cadence in SIM mode:

Install a separate cadence detector. Most training apps are capable of connecting to the Halcyon and a separate cadence detector via BLE or ANT + simultaneously, and displaying data from both. The steps to change the source of your app’s cadence reading from the Halcyon to your cadence detector may differ between individual apps. Consult the app’s support.

STAC Control Panel does not currently support two devices over BLE or ANT+, and therefore cannot display cadence data in when in Sim mode. 

How do I use the Meilan cadence sensor?

Click the link below to view the quick start guide for the Meilan cadence sensor purchased through STAC. 

http://www.meilancycling.com/sub/?id=684 

The Halcyon-transmitted cadence doesn't match my cadence sensor

The STAC Zero Halcyon only reports cadence if you've configured it with the # of gear teeth you intend on using in ERG Mode.  If the cadence reported doesn't seem to match your existing cadence sensor:

  • Double-check that you've counted your teeth correctly.  
  • Make sure you're riding in the gear you set ERG cadence to use.  If you entered 50x12 gearing, but then ride in your 50x14 gear, the cadence from the Halcyon will be too low.
  • Double-check that the gear tooth count was successfully transmitted to the trainer by disconnecting in STAC Control Panel, then reconnecting and going back to the Halcyon Tweaks page and verifying the # of teeth.

 

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