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Why is it that people say all bikes lose 10-15% of the power going from the engine -> rear wheel?
Why is it a percentage..
My question is this...
If an SV650/EX-500/whatver has a six speed transmission, and a chain drive...
And a Gixxer 1000 has a six speed transmission and chain drive...
What is it that causes the Gixxer to lose a greater amount of horsepower going from the engine to the wheel? The transmission and chain are going to work similarly and have about the same amount of friction and inertia right? Where are the extra losses coming from?
E.x. if the smaller bike loses 10hp, what makes the bigger bike lose 20hp. Why wouldn't they both lose 10hp?
(Note I'm not comparing a chain drive bike to a shaft drive bike, or a car)
So why do we say, "Bikes lose 10-15% of the power, rather than, all chain drive bikes lose 10hp" ??
Ben?