Horsepower is horsepower?

Another try in explaining how torque is the basis for HP...

Put a pipe wrench on any drive shaft...gasser or diesel and ignore
gearing multiplication for a moment

Hang a 100 lb weight exactly 12 inches off the drive shaft center

But the drive shaft is not allowed to turn or move in any way

That drive shaft now has 100 ft/lbs of torque on it, but no HP what
so ever

Then allow that drive shaft to move 1 degree in rotation from that
100 lb weight hung at exactly 12 inches from the drive shaft center
line

Now it has HP

That is the difference between torque and HP



That pipe wrench 12 inch lever arm is what the crank shaft off set
for each cylinder is. Just a different increment from the crank
center line...multiplied by the number of cylinders

Instead of a dead weight mentioned above, the force is the air/fuel
mixture burning (yes, burn...not explosion). Producing heat to expand
the gases captured inside the cylinder/head. That then develops PSI
on the piston top. That then moves the piston. That then moves the
crank shaft via the offset from it's center line. That then turns the
input shaft to the tranny. That then turns the drive gear inside the
tranny. That then turns the driven gear at some ratio (multiplication
of that power). That then turns the drive shaft. That then turns the
diff drive gear (pinion). That then turns the ring gear (driven gear
and that ratio will also multiply the power)