There are many variables in fuel consumption and this applies to all types of machinery that consume fuel. Wind resistance(including rider size), tyre pressures, road surface etc. The same applies to claimed fuel consumption figures from manufacturers. The only real constant that you could measure is fuel per horsepower alongside with torque. 100hp pushing 250kg bike is not the same as 100hp pushing an 800kg car. The car requires more torque to gain momentum than the bike and vice versa. The motorcycle develops the same hp with smaller pistons, shorter stroke etc, the car has bigger pistons and a longer stroke, attached to a large flywheel therefore developing more torque.
In short, it is like trying to compare a 25hp air cooled single cylinder Lister with a 28hp Hyosung GT250........both totally different and will develop the same horspower in a different way with different amounts of fuel. One is also not my cup of tea.......
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Originally Posted by skippa1
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