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Originally Posted by 3-Wheeler
Hi Metro,
For someone wanting to get some coast-down numbers, what have you determined to be a reasonable mph to start the test?
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I started at 90-100 km/h for mine.
If you want to go by the book, see this thread:
http://ecomodder.com/forum/showthrea...test-2992.html
Phil describes the SAE procedure and refers to the paper that details it.
Quote:
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Then when I make some runs with the under body panels off, I can get several runs and compare to the data base already accumulated. This will also give an idea on just how variable the coast down process is.
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I think you will find it to be extremely variable, to the point of making comparisons difficult that aren't of the immediate A-B-A variety in identical conditions.
The Garmin will help quite a lot vs. the old method of relying on on the driver to watch the speedometer and call out speeds into a recorder.