Quote:
Originally Posted by brandonblt2
Torque = Initial acceleration up until 5,252 rpm
HP = Top Speed/ acceleration after 5,252 rpm
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This is actualy
completely wrong. There is nothing special about the 5,252 number,
nothing changes qualitatively about the engine operation at that RPM.
The fact that the curves "cross" at 5,252 means
nothing, as each curve plots a
different parameter using
different units.
It's just a
shorthand for calculation, resulting from using particular units for HP and Torque.
Power [in HP] = torque [in lb ft] X RPM/5252
If you used the civilized and scientific SI units, the factor is 9,549
Power [in kW] = torque [in Nm] x RPM /
9549
If you expressed torque in lb in, again the factor would be different
Power [in HP] = torque [in lb in] X RPM/
63024