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Old 03-26-2015, 08:57 AM   #47 (permalink)
Shawn D.
Harebrained Idea Skeptic
 
Join Date: Jun 2008
Location: Alpharetta, GA
Posts: 211

The White Car - '84 Mercedes-Benz 300td
90 day: 28.84 mpg (US)

The Blue Car - '86 BMW 535i
Last 3: 23.86 mpg (US)
Thanks: 19
Thanked 13 Times in 9 Posts
Quote:
Originally Posted by JohnAh View Post
Wind resistance is at least a square function, or is it even a cubic relation?
Drag is a square function, power required is a cubic function.

Quote:
Originally Posted by JohnAh View Post
I mix about 25-30% ethanol to the petrol. This LOWERS the consumption sligthly and reduces detonation and "glow-ignition" (guess there's a better word I don't know about in english).
The words used to describe that are "pinging" ("pinking" in the UK, Australia, New Zealand) or "detonation" (not the same as "combustion").
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