Mr Helmholz - simple model

[Gary Derian]

Power in horsepower and torque in ft-lb always have the same value at 5252
rpm.  That is because a horsepower is defined as 33,000 ft-lb per minute and
to go from linear to rotary we have to divide by 2 pi.  The result is
5252.1131002 yadda yadda

Power in kW and torque in Nm would cross over at some other rpm.

To maximize power under the curve, you have to operate your engine so the
average hp is as high as possible.  This means revving past the hp peak to a
point that after you shift, the engine has the same power but on the rising
side of the curve than before you shifted.  Because rotational inertia has
less effect in higher gears, it is better to shift a little sooner than
this.

Gary Derian <gderian at oh.verio.com>

> --- "Todd....!!" <atc347 at c-com.net> wrote:
> > Hey Gary,
> >
> > More actual TOTAL POWER is produced under the power
> > curve, I believe,
> > where the Torque curve meets the HP curve... Ya
> > think?
>
> I don't know, but don't hp and torque curves always
> cross at 5252 RPM?  How would that work on any engine
> that has a peak HP over 5252 RPM?
>
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