Quote:
Originally Posted by GretchenGotGrowl
How so? It is a pretty good measure of the power density (efficiency) of the motor, and if you design for a particular displacement (as Porsche does), then it allows you to keep footprints smaller and weights down.
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A better measure would be a comparison of hp/tq per motor dimension and weight.
Here is an example of that, two ford motors... On the left is a 4.6 and on the right is a 5.0
