What to do with all the numbers?
The sheer amount and variety of numbers involved in dynamometer testing can be overwhelming for the casual user and, in some cases, even for the seasoned professional. We will attempt to take some of the mystery out of these numbers and see what they mean, but more importantly see how we can use them effectively. For this article we will focus on an engine dynamometer where we are measuring what is called output at the flywheel, as opposed to a chassis dynamometer which measures output at the rear wheels.
There are two sets of numbers that a dyno test produces. We will refer to the two sets as basic and calculated. Basic numbers are those numbers that are measured by the dynamometer system. Calculated numbers are those which use the result of observed or measured basic numbers applied in a formula.