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Old 10-12-2010, 03:46 PM   #5 (permalink)
COcyclist
Aero Wannabe
 
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Join Date: Dec 2007
Location: NW Colo
Posts: 738

TDi - '04 VW Golf
TEAM VW AUDI Group
90 day: 52.55 mpg (US)
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Quote:
Originally Posted by nmgolfer View Post
Most hub caps are like egg beaters chopping their way through the air. But they look good and they provide much needed cooling for brake pads. We can put smooth hub caps on a reduce both the noise (aeroacoustics) and the "egg beater" form drag... but we may need to replace the brake pads much sooner than otherwise (unless we drive a prius that is).
I don't recall whose signature, but it goes "if you are using the brakes you are doing it all wrong." If you are hypermiling you shouldn't be overheating the brakes so smooth covers should be OK for most of us on this site. They are still open to the air on the inside of the wheel after all.
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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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