>>28112133
>The weight on the back is still pushing against frictional losses of the pistons, vacuum its pulling, friction on the bearings
None of which is affected by changing the flywheel. That resistance is unchanged, which is the point you're missing.

>the heavier the flywheel the more of that is negated.
Nope. The flywheel just provides rotational inertia and the engine has to work harder to spin it faster. If flywheels added resistance then you'd have a point but they don't.

Did ya ever wonder why race cars have light flywheels?? Derrrrp

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If lightweight flywheels are so good and useful why don't manufuckturers implement it in the first place?