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Old 01-31-2022, 01:50 PM   #5 (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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bandit, mine is a Golf TDI, not a Beetle but I started a thread that you may find useful.

https://ecomodder.com/forum/showthre...sel-38306.html

As freebeard has suggested, the drag at the back of the Beetle is terrible. The curved roof creates strong counter-rotating vortexes leading to high drag. The wing may help disrupt those vortexes and allow the air to come together more smoothly at the rear of the car.
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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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