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On page 4, I describe the concept of a "traction dyno." On Page 5, there are further comments. I realize, however, that
the actual use of the traction dyno can expose some complications which might not be immediately apparent from a reading of
these two pages.
The complications disappear if the car has equal LR and RR corner weights, the chain can be connected at the CG height,
and the rear axle assembly weight is negligible when compared to the total weight. But, of course, these conditions are not
common. You might be using some static preload, so LR and RR weights might be quite different. It might not be convenient
to attach a horizontal chain at the CG height. And, with many cars, the rear axle assembly weight is a relatively large part
of the total weight.
The following spreadsheet allows the user to input these deviations from the "ideal" and yields the actual rear wheel loads
during launch.
Be certain to input the proper values for your car, as I have deliberately used some "crazy" values in the sample calculation. | 
