The Speedometer isn't working August 05, 2020 22:36 Kindly make sure the metal button on your rear spokes is in line with the sensor on the rear dropouts as in the photo below. Make sure your voltage is set to 48V on the screen settings, Make sure the speed limiter is not above 25mph Related articles How can I increase the pedaling resistance? What is the weight limit on M-Class? How can I turn on the lights on M-class? What's the max speed of Ariel Rider M-Class Commuter Ebike? What kind of maintenace should I do on my M-class? Comments 0 comments Please sign in to leave a comment.