Forum Discussion
wnjj
Aug 13, 2012Explorer II
rhagfo wrote:Hannibal wrote:transamz9 wrote:
The gearing works the same on a diesel as it does on a gas.
Except that the gas engine can rev and use more gearing to multiply torque.
It's horsepower that determines how fast we can tow.
http://www.catrvclub.org/PDF_Docs/Understanding_Perf.pdf
True, but is is torque that determines how much you can tow. This is why I can pull 12K at speed with 3.55 gears up hill.
No. It's not. I can easily generate 600 ft-lbs with a 3 foot breaker bar but there's no way I can tow 12k at speed up hill. I can apply a lot of force, but not much HP.
Your higher torque engine simply makes its HP at a lower RPM. That's all it means. Its torque determines the gearing you need to keep the engine in its sweet spot at speed. Its HP determines how much of a load you can move at that speed.
Why do you think OTR truck engines are named by their HP? E.G. 400, 444, 500, etc.
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