2017 Gas Tank on a 2013?

[jtopiso_imp]

max mileage speed

Yes we have noticed that higher rpms,and speeds use more fuel, but that only makes sense.

Riding locally 45-60 mph on curvy backroads its not unusual for me to get close to 60 mpg. In which case I know I can go over 200 miles before needing to start looking for gas. Take a trip, with freeway droning, like my 700 mile trip back from Arkansas, 12 hours at 75-85 mph and I saw mpg drop into the upper 40s. When that is the case I know I need to start looking for gas in the 140-150 mile range. That would be true of most any vehicle however. It simply takes more fuel to push something faster. For the CB the break point seems to be about 70 mph. For continued high speed cruising one would need at least 5 gals or 19 L of fuel to guarantee 200 miles on a tank.

Even guys that are used to pounding out the miles would have trouble riding 200 miles straight without stopping, especially on a bike not designed to cut the wind or protect the rider .... like the CB.

Then there's the seat, which most people can't seem to ride for the 3 hours at a time it would take to run out 5 gallons of fuel in 1 sitting. lol

It's worse than that

Unlike an automobile which is these days carefully designed for aerodynamic performance, a motorcycle uses most of its generated power to overcome the resistance of the fluid that we travel in. (Car drivers generally have no idea that they actually travel though a fluid

The fluid resistance (and the amount of fuel we need to burn to overcome it) is not proportional to the velocity we travel at, it is proportional to the square of the velocity.

Which is why when we are afraid to run out of juice in a car, we drive in as low revolutions as the highest gear will let us do, while on a motorcycle we travel as slow as we can without being a danger to ourselves and those we share the road with.

It's even worse than that!

The *force* to overcome drag is proportional to the square of the veolocity. That's right. The *power* required (or energy per second, or fuel burnt per second) is the force times the veolocity, which means the fuel burnt (per second) is proportional to the cube of the velocity.

But then again, if you go faster, you spend less time... so fuel burnt per second is proportional to the cube of speed, but fuel burnt per mile is proportional to the square of speed.

Most people plan their stops in terms of range ("I shall stop every 200 miles"), but some do in terms of time ("I shall stop every two hours"), so these should consider the cube proportion.