Quote:
Originally Posted by NeilBlanchard
You will have to do a coast down test. Here's the Instructables page and spreadsheet I used:
Measure the drag coefficient of your car
I found it much easier to set my Scan Gauge II to KPH and video record it during the coast down -- when it hit 70kphm pause, it look at the time, and let it play for 10s and pause it, look at the speed, etc.
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Thanks for those tips, Neil. I'm planning to do the video thing as I get around to field testing. With $4/gal gas I don't want to burn any more fuel than necessary so wringing the best data I can from each test is a goal. Amplified readings in km/hr never occurred to me but now that you mention it the added "sensitivity" seems value added for test purposes.