In article ,
Roger Mills wrote:
On 30/03/2016 00:37, Dave Plowman (News) wrote:
In ,
Roger wrote:
This clearly shows you get more force by choosing peak power in a low
gear over peak torque in a higher one.


That's a no-brainer, anyway. Just as you can express engine power in
terms of engine speed (times) engine torque (divided by) a suitable
constant, you can also express propulsive power as road speed (times)
thrust at the contact patch (divided by) a different constant - but
they should equate to the same thing apart from transmission losses.
So when the engine is developing its peak power, you'll get peak
thrust at the wheels.

Are you at it too? ;-)

Peak torque at the wheels happens when the engine is at peak torque -
not peak BHP, unless the two coincide. Regardless of which gear you
choose.


See my previous post. At any given road speed the max available thrust
at the wheels occurs when the engine is developing its max *power* not
its max *torque*. You choose the gearing to suit.

The discussion was about accleration - rate of change of speed - at any
one point in an engine's range.

--
*A nest isn't empty until all their stuff is out of the attic

Dave Plowman London SW
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