Quote:
Originally Posted by redpoint5
I have to admit, it's been a while since I glossed over the technique. The overall concept was sufficient to me, which is that comparing the delta in max speed for a given throttle position, one could extrapolate out the difference in aero drag and efficiency.
I was going to read up in more detail when I actually employ the technique. Unfortunately I've lost most of my interest at the moment because I rarely drive, and when I do, my fuel is paid for by my employer. I'm not going to mod a company car.
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The technique has nothing whatsoever to do with fuel usage, thermal efficiency or BSFC. Nothing at all.
This thread is a good example of Aerohead just leading people astray and causing confusion - bringing in irrelevant concepts, not understanding what is being described (but at the same time being sure he is against it), citing irrelevant references.
If done carefully, the throttle-stop technique works extremely well in cars with manual throttles, and is light-years ahead of coast-down testing.