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I would spoil you if I were to develop a graph that would show the power impulses from each cylinder (showing acceleration of the crank) and the coinciding compression stroke (deceleration) and how that effects fuel consumption. Imagine how strong the impulse has to be that is put in if the flywheel is to light. Imagine the impulse that needs to be put into the equation if the flywheel is heavier. Lower rpm use will require more throttle (%) to keep the engine overcoming the compression stroke. If you think I am bat **** crazy, or I am some type of moronic asshole (which you do as you believe a piece of data off a graph for HP seekers is also the data the mpg seeker should look at), take the blade off your lawmower (flywheel for most, besides the ultra lite aluminum "fan) and start it up. I am sure that it will respond quickly, but will require a higher idle speed and more throttle to maintain any given RPM. But, I am just some dumb fool, almost always "proven wrong" by my students (especially when it comes to how stupid humans can be). Give it the old college try, and start up that lawnmower (and tell me about your experiences with it).
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