# Where is the speed sensor on a treadmill?

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The speed sensor on an electronic treadmill is most likely located at the front roller near the motor assembly, where it counts each revolution to calculate speed and distance.

## Why is my treadmill speeding up and slowing down?

The most likely cause for the motor to speed up and slow down is a dry or worn walking belt or walking board. Lift the walking belt and feel underneath for worn spots on the board. … This mode also allows the technician to calibrate the speed and incline of the treadmill whenever a major electrical component is replaced.

## How do I know if my treadmill speed is accurate?

To determine the treadmill speed (distance / time), divide the distance (belt length x number of revolutions) by the time measured. For example, if the belt length was 3 meters, and it took 20 seconds for it to do 15 revolutions, then the speed is (3 x 15) / 20 = 2.25 meters/second (or 8.1 km/hr or 5 mph).

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