On 04/04/2016 11:07, Dave Plowman (News) wrote:


Adding in drag etc is simply attempting to move the goalposts yet again.
Drag depends on speed. And that is irrelevant to the discussion.


If you are trying to maximise acceleration, drag is highly relevant.

If you simply want to maximise thrust at the wheels, it isn't.

But the force which actually accelerates the car is the *difference*
between the thrust at the wheels and the aerodynamic drag.

That's why every car has a maximum speed - when it reaches the point
where the drag equals the maximum thrust available so there's nothing
left to accelerate it any more.

And you may care to reflect on why it is that the maximum speed
invariably coincides with the engine's maximum *power* output in an
appropriate gear - not at its max torque point.
--
Cheers,
Roger
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