Why Inertia?

Represent the vehicular mass : Accelerate a known mass

Accurate Data : Engine is in control, not the dyno

Repeatable Results:  0.1% or less than 1 hp variance in 1000 hp engines

Engine controls the dyno : If it can accelerate the inertia, it can accelerate the car

Dyno Performance Transfers to Track Performance

Been confused?  Wonder what the engine really can do?  Wonder why the engine isn't performing on the racetrack, but it looked good on the dyno?  You aren't the only one that has been there...  Measure the acceleration, calculate the torque and power.