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Old 08-20-2015, 07:10 AM   #21 (permalink)
sendler
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Join Date: May 2011
Location: Syracuse, NY USA
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Honda CBR250R FI Single - '11 Honda CBR250R
90 day: 105.14 mpg (US)

2001 Honda Insight stick - '01 Honda Insight manual
90 day: 60.68 mpg (US)

2009 Honda Fit auto - '09 Honda Fit Auto
90 day: 38.51 mpg (US)

PCX153 - '13 Honda PCX150
90 day: 104.48 mpg (US)

2015 Yamaha R3 - '15 Yamaha R3
90 day: 80.94 mpg (US)

Ninja650 - '19 Kawasaki Ninja 650
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Quote:
Originally Posted by RedDevil View Post
Compare this to the old video Darcane posted in this link:
http://ecomodder.com/forum/showthrea...rag-25378.html

From that, at 5:49:

Ten times. That is quite a bit less than the NACA wing shape, but the wing shape used there did not have the concave tail section.
Would that alone make for such a big difference?
Apparently careful design has allowed the much thicker concave airfoil to maintain the same drag as the thinner airfoil in the video which was not necessarily chosen for max efficient width.
.
Can you imagine the extreme efficiency of an electric Vetter style motorcycle with that pure airfoil top view. Even in the current form of the Vetter fairing which has been made to universal and practical application the gas bikes are over 150 mpg in mixed riding and Hershner's electric streamliner is pushing 300 mpgE.

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