Ken,Ken_Parkman wrote: ↑Wed Nov 23, 2022 12:15 pmThe concrete example was several pages back where a simple corrected input gave a 17% improvement in acceleration. Pretty good bang for the buck. The second concrete example is your own simulation where the use of the higher power portion of the torque curve (even with gear inputs are not realistic) gave a much better quarter mile time.David Redszus wrote: ↑Tue Nov 22, 2022 11:46 pmIt does nothing of the sort. What do you feel is incorrect? Could you please provide a concrete example with real numbers?David your own simulation data proves these statements incorrect.
There is a great deal more to be learned; we have just begun. The changes in calculated performance were never intended to optimize performance; only that as various parameters change, so does performance.How is it possible your better calculated performance is with the lower of your chosen input parameters if there is not something more to be learned?
The shape of the torque curve and the gear sets used can produce substantial differences in performance.
A short first gear will produce a very quick 60ft time and high G force.
But, if the remaining gears are incorrect, the total 1/4 mile elapsed time will be slow.
Given a specific torque curve, it is important to find the right combination of rear end ratio, gear ratios, and tire diameter.
The question what is wrong with the chart (if you are serious) is it cannot improve real performance as we cannot optimize the driveline with that data. As you used the torque input there is not a crossover for different gears and we have no idea how optimize even the shift point. You cannot begin to optimize performance when you don't even know when to shift. Replot it using a power input against rpm and then you can optimize shift points and then have data to work with for driveline optimization.
It doesn't what units you use to plot the curves they will not cross.
Why is that? Because most dyno pulls stop just after peak HP. One would need data at a higher RPM's before the curves will cross.