Connecting a Classic Trainer (non smart) using Virtual Watts (Bluetooth)


On September 28th, we launched an entire new app.  We recommend you update to the SYSTM app before November 15th.  At that time, the SUF app will cease to function.  For more details see   Moving from SUF to SYSTM: Everything you need to know.

This article will provide instructions for connecting a Classic trainer to the app. This trainer does not offer any data on its own and cannot be controlled by the app.  This setup requires a compatible Speed Sensor.  If you have a power meter, please refer to this setup instead. If you are unsure what kind of trainer you have, or how to connect, please refer to our Trainer Compatibility Helper to find out how to connect your trainer.


In order for the app to report data and control the trainer,  trainers and sensors will need to be connected to the app from the device connections screen in the workout player.  In this connections setup, we will connect a speed sensor and configure the app to report Virtual Watts. Virtual Watts are a calculated power estimate based on a known power curve for your trainer.  For more information, please refer to this article.  


To Start:

Please select your workout from the Calendar or the Workout List and press the Play or Start button.  




This will launch the Device Connections screen.  If your screen does not open automatically, please tap the gear icon in the top right corner of your page.  Please ensure that your screen says that Bluetooth is ON.  



Activate your sensors then click the Add Devices button on your screen.  Cadence sensors will require you to spin the cranks, heart rate monitors will require you to be wearing them.  Moistening the leads on the heart rate monitor strap can help if your sensor doesn't show up in the device list.  


Selecting your sensor

With your sensors activated, you should be able to see your speed sensor in the list of available devices to add.  Click on connect to add the device to the right-hand panel of the Device Connections screen.


This screen is has a slightly different appearance on a mobile device.  Please tap to select the speed sensor.  




Once the device is properly connected, it should appear with a white box around it in the right-hand panel. Screen_Shot_2020-10-09_at_2.17.00_PM.png

Once the speed sensor is connected, we can configure the app for Virtual Watts.  Please select the Show Virtual Watts button to open this configuration panel.  Please select your trainer manufacturer and model from the dropdown lists.  Be sure to select the proper settings if your trainer has manual settings.  You will want the in-app settings to match the trainer's manual settings.  Select your wheel size. Then click the ADD button at the bottom.  



Your trainer should now appear in the right-hand panel of the Device Connections screen, and it should have a  Screen_Shot_2020-10-09_at_8.46.20_AM.png Power Icon next to it.  If the icon is not green, please click on it.  


Your app is now configured to report Virtual Watts in the app.  To connect the rest of your sensors, please continue here:


Device Connections


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