Quote:
Originally Posted by bruce.augenstein@comcast.
Of course you can. With identical drive train rotational inertia for the two cars, the 4000 rpm car absolutely pulls away from the 8000 rpm car, because it only has to spin up the rotating parts half as quickly.
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NO, you can not. Patently false. Key statement - with identical drivetrain inertia - that means all of the rotational inertia of the entire drivetrain from flywheel to wheels sum to the same total inertia. If this is true then you can make some accurate a priori predictions. However for any two cars that is quite unlikely.
Quote:
Originally Posted by bruce.augenstein@comcast.
Since CarTest predicted identical acceleration between the two cars (which is absolutely incorrect), if there's no way to factor in rotational inertia, then the software has a problem.
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I never said that was the prediction from CarTest. In fact the predictions are close but not identical. The biggest difference is in 1st gear which makes sense. Also I did not use a totally flat torque curve for a quick investigation of this. Like I said, more investigation is required. Stop jumping to conclusions.
Quote:
Originally Posted by bruce.augenstein@comcast.
No. "Quarter" has input requirements for drivetrain inertia, but not Quarter Jr.
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And the predictions from Quarter Jr. then for this 4000/8000 rpm case are? Since that tool does not have control over rotational inertia is must be total crap.... I don't really believe that, but I'm playing your part for you.