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Old 05-30-2014, 07:06 AM   #277 (permalink)
sendler
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Join Date: May 2011
Location: Syracuse, NY USA
Posts: 2,935

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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Quote:
Originally Posted by hyper-miler View Post
Note on the Monotracer above there is a pointed center on the sides coming out of the body, I believe this is critical to eliminating side wind tendency. This is what caused Vetters problems. I will utilize this design when fully enclosing it.
Adding a knife edge along the top of the tail has proven to instill oscillation for some reason and trying to spoil the lift (side) of the vertical wing will be very much less effective back there than using a spoil strip right along the nose since the greatest lift force will be at a location just behind the max thickness of the wing.
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Venting the pressure differential with openings across the bike at the max thickness is the best and simplest way to improve handling in side winds. And judging from the air movement I feel ripping across the gap when riding my PCX150, the cross sectional area of the vent will need to be on the order of 1 square foot. Maybe 2.
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