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Old 01-14-2012, 02:20 PM   #43 (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
90 day: 72.57 mpg (US)
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Adding some fairing below the center of the body can help with side winds by getting the center of pressure lower in relation to the center of gravity on the roll axis. Even though you are increasing the total side area. The ultra low center of gravity of a scooter drive train works against cross wind performance by anchoring the bottom of the bike and shifting all of the side movement to the top where it tries to blow you over into a lean which is the wrong way. My CBR250R is exceptional in cross winds as the bottom of the bike seems to get blown to the side more than the top so the it magically steers itself into the wind which I am assuming is due to the relationship of the center of pressure being below the CG of the roll axis. I would also try covering the rear wheel right down to the ground clearance level which will be more aero and may even help in cross winds. I may try a DIY disc cover for the rear wheel of my bike. Increasing the storage hatch to include a helmet fairing would give more storage and improve the fuel usage numbers. But all in all, this is a beautiful machine and makes me wonder why Honda doesn't build anything like it themselves.
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