Quote Originally Posted by JoshS View Post
So an adder based on power vs. an adder based on weight is likely to result in basically the same answer for all cars in the same class.
Good point. So, since weight is based on power, ignore weight and adjust the subtractor on power. Same ole.

So can't we just use a fixed number and make life simpler? Oh wait ... we already do!
No, that doesn't follow your point above. If we were to base it on either weight or power, than the numerical subtractor must vary based on that.

A fixed number only works if there's a fixed amount of power or weight for all cars in the class. What you're actually suggesting in this last case is to base the subtractor on the chosen power-to-weight ratio, which is class-specific, not vehicle-specific and thus would not change. Circular logic...

What would be interesting is to know the "baseline" ITB car and its power level, then vary the current-50# subtractor as a function of its power...