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Old 04-25-2011, 07:10 AM   #5 (permalink)
KamperBob
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Good tips

Quote:
Originally Posted by NeilBlanchard View Post
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.
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.
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Last edited by KamperBob; 04-25-2011 at 07:15 AM.. Reason: fat fingers
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