Quote:
Originally Posted by wmjinman
Interesting idea.
I think... wheels jacked up, running at cruising speed in gear. To me, that removes the aerodynamic and "real life" road variables (wind, grade, traffic, etc), but still leaves in the "real world" drivetrain & wheels turning.
What do you all think of that?
Or am I out in "left field"?
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Not at all in left field!... That would be a great way to include the drivetrain losses in the calculation. Unfortunately though, running with the wheels off the ground creates a whole mess on its own... No matter how balanced your tires may be, they will not rotate at such a high rate of speed without excessive hop, as every forgiving tolerance becomes less loaded (bearings, CV's, etc.) If you've ever seen a HMMWV walk itself off of jack stands, you'll know how dangerous this can be!!! O.o
Utilizing a dyno would mitigate these dynamics, but unfortunately we don't all have one in our garage!