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This is true, which means the combustion of the AF mixture must create more force. It takes more air and thus more fuel to make a more violent/forceful combustion therefore reducing fuel economy. I don't think this has anything to do with engine longevity, but for a given gear ratio at a given RPM the larger displacement motor will generally be more efficient.
i got a 1000 because i couldn't fit on a 600ss. I even had trouble shifting a stock GSXR 750 due to my inseam. buy the bike that fits and ride within your abilities. i did start on a ninja 250 though (also a tight fit)
I think you are assuming that the gearing is the same on both the 6R and the 9R. It's not. The 9R has higher overall gearing and the engines makes fewer revolutions per mile for a given gear. The 9R also makes more low end torque and can be short-shifted without lugging, so it can also be run in higher gears at a given speed. There's a huge difference between the typical cruising RPM between the bikes.
Last edited by Garandman; 08-31-13 at 06:41 AM.
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