On 10/05/2021 19:10, Commander Kinsey wrote:
On Fri, 07 May 2021 11:54:14 +0100, TMS320 wrote:
On 06/05/2021 18:35, Commander Kinsey wrote:
On Wed, 05 May 2021 21:34:31 +0100, Rod Speed

"Commander Kinsey" wrote in message

But at that point you've already gone over the peak of the
power curve. I'd just make it drop the curve more quickly so
it can never go too fast.

Not possible to do that and still get the best performance.

You're getting **** all performance if you've gone over the power
curve anyway.

It's a primitive technique for an engine under-endowed with torque.
When you change up, there is an inevitable drop in power so the
idea of revving beyond peak power is to get further up the curve in
the next gear.

Perhaps there should be more gears then.

Or a wider power band - eg, electric motor (*) - and one gear.

Modern turbocharged engines tend to be mapped to develop a plateau over
4500-6500rpm with minimal discernable peak. Add a 7 or 8 speed automatic
and the old lurch and grind is gone.

(*) Comparisons of torque between EV and ICE are irrelevant. EV tend to
be geared to the equivalent of 2nd gear (9-10mph/1000rpm) so have twice
the torque to replace 1st. Using power = torque x rpm it can been that
the knee point is about 2500rpm.