Quote:
Originally Posted by American Viking
I recently was on a ride with a guy with a cbr250. Now the owner was a sparse individual (150 lbs) and he was getting like 55+mpg when the rest of us were on larger bikes getting 40+ mpg's. Then he let a mutual friend that weights 265 ride it for a tank. Shazam, the bike is netting 45 mpg. Some of that was the unfamiliar rider, but some of that shift was the heavier rider.
So how efficient is that cbr250 going to be when the weight it has to move goes up by a factor of 4 or 5.
Adding front suspension, front subframe, safety cage, seats and body is going to more than triple the Gross weight.
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That's very strange. My 650 twin does that - in town.
Typically the CBR will out-perform most highway-capable cycles in the mpg department. Just under 70 mpg is average, with some in the 90s.
Weight will increase certainly, but that will mostly effect acceleration. Reducing drag should decrease the load and throttle opening at highway speeds and give you better cruising mileage.