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Old 08-14-2010, 11:57 AM   #35 (permalink)
COcyclist
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Join Date: Dec 2007
Location: NW Colo
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TDi - '04 VW Golf
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If you did some tuft testing, you could experiment with the angle of the Kammback over several runs to see how steep you can go before losing attached flow. (I have a hunch you can go a little steeper) Do you have a buddy or significant other who would be willing to drive your car while you drive a chase car with a video camera? This is the quickest, simplest way to test your mod that I know of. You don't have to drive very fast or very far to get some good data.

I use coast-down as a quick way to determine if it helps or hurts. It takes a little more time and is highly dependent on ideal (no wind) weather conditions. Looking good!
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https://ecomodder.com/forum/showthre...tml#post621801


Quote:
Originally Posted by freebeard View Post
The power needed to push an object through a fluid increases as the cube of the velocity. Mechanical friction increases as the square, so increasing speed requires progressively more power.
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