Why are dyno readings between dynos different?
*Horsepower is a computed figure based upon how much torque an engine produces. *The torque of the motor is measured on a dyno by how quickly it can rotate a drum of a given weight. *Several variables like bearing wear, lubrication, temperature, etc can effect how easily or hard the drum can be rotated thus skewing the torque reading of different dynos or even the same dyno on different days. *An eddy current dyno produces more repeatable and consistent results by controlling the speed of the drum that the motorcycle is turning. *The DynoJet 250i also samples air pressure, temerature and humidity within the room. *It uses this data to apply a “correction factor” to the computed data. *Since engines generally run better in cooler air with less humidity the motorcycle run at different times could show different output readings. *The correction factor ensure that the operator is comparing “apples to apples” when looking at runs from different times.
