Speed sensors use wheel size to calculate speed and distance based off wheel revolutions over time. Wheel size is a required setting to obtain accurate readings from your speed sensor.
|WHEEL DIAMETER OPTIONS|
|700 x 20||26 x 2.00||27.5 x 2.00||29 x 2.00|
|700 x 23||26 x 2.30||27.5 x 2.30||29 x 2.30|
|700 x 25||26 x 2.30||27.5 x 2.50||29 x 2.50|
|700 x 28||26 x 2.50||27.5 x 2.75||29 x 2.75|
|700 x 32||26 x 4.00||27.5 x 3.00||29 x 3.00|
|700 x 35||26 x 4.80|
|700 x 38|
Under Settings:[Profile name] > Movement source, you can choose whether you prefer your speed and distance on the Dash to be calculated from the speed sensor, GPS unit, or trainer.
|Sensor||Displays speed and distance from the speed sensor, unless no speed sensor is paired.|
|GPS||Displays speed and distance from the GPS, records both to the ride file.|
|Trainer||Displays speed and distance from the trainer, records both to the ride file.|