On 01/04/2016 15:12, Clive George wrote:


When you're talking about the best acceleration in the way I and various
others are talking about it, gear boxes are very relevant indeed.


Indeed they are. The rate of acceleration is dependent on gearbox
*output* torque - not on engine torque. At a given road speed, output
torque will *always* be higher when the engine is at max power in a
lower gear than when it's at max torque in a higher gear.

Forget acceleration for a moment, and think about steady state thrust
when (say) climbing a steep hill. If you want to make the most progress
do you slog it out in a high gear with the engine at max *torque*, or do
you change down to let the engine develop more *power*?

I know what I do!
--
Cheers,
Roger
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