How do I find... Cd and Frontal Area?
I am having trouble find the follow numbers for my 1998 Nissan Frontier XE
Coefficient of Drag (factory) Frontal Area (factory - sq. ft.) Does anyone know where I can locate them? |
...when in doubt, haul the tape-measure out!
...area (A) is simple: measure width, height and ground clearance! that'll get you the frontal area (don't forget to subtract the ground clearance from the height!) ...Cd is gonna be a "search & find" situation, I'm afraid. |
Thank you sir!
Is that Roof height, or Hood height? |
...roof, because you're calculating the cars' "total frontal area."
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That ain't how it's been done.
Take published w x h x .8 for a commonly accepted frontal area estimate. |
Finding Cd is going to be tough. Little interest in that stat in the vehicle's target market.
As for A: a somewhat more involved method using a digital camera with a strong optical zoom: http://ecomodder.com/forum/showthrea...l-area-82.html |
Nice Link, Thanks
I found this on that Blueprint site in your thread: http://www.the-blueprints.com/bluepr...egular-bed.gif So it looks like: H: 1615 mm / 25.4 = 63.58 In = 5.298 ft W: 1690 mm / 25.4 = 66.54 In = 5.545 ft 63.58 x 66.54 x 0.8 = 3384.49 sq in or 5.298 x 5.545 x 0.8 = 23.50 sqft |
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I f you can't find numbers for the drag coefficient, then try coastdown testing. It's not really that hard once you find a good stretch of road and know what to pay attention to.
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Tired brain/fat fingers... :eek: |
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