The CBR250 has good potential and could well get 100mpg with good conditions and using hypermiling skills. The conditions Craig uses in his events though are really tough. No way will the stock CBR250 reach 100mpg during one of his rides, I'd guess maybe 70 with the rider in a tuck most of the way.
Craigs events make a point that aerodynamics are the only way to get outstanding fuel economy at higher speeds. And oh, by the way, rider comfort is also drastically improved. And you get some good storage for your stuff. It is really a win all the way around, it just doesn't look like the motorcycle your grand daddy rode.
Gads, we really need more people like him to promote this line of thought. More independent builders, customizers, even hackers like me.
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Good design is simple. Getting there isn't.
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