4x4ord wrote:
RCMAN46 wrote:
4x4ord wrote:
DougE wrote:
4x4ord - I think you just proved my statement on page 3 that torque determines how steep a hill you can climb and horsepower determines how fast you can do it.
Torque on its own is actually quite meaningless, but you are right that if two similarly geared vehicles were to pull similar trailers up an increasingly steep hill the one capable of producing more torque would be able to climb the grade further than the other. As well if the vehicles are geared such that they can best utilize their power the one making the most power will climb the hill faster than the other. The thing about all this is that engineers need to understand how HP Torque and gearing all relate and they design their vehicles to do the intended job. Marketing persons know that advertised torque and power numbers sell vehicles so they push the idea that more torque is always better or more power is better depending on what they are trying to sell.
Sorry we still have it wrong.
First an engine that can produce 400 ft lbs of torque at 1500 rpm.
Second an engine that can produce 300 ft lbs of torque at 5000 rpm.
You made the assumption we would gear each to utilize the power.
I also assumed you were talking about engine shaft torque.
The 300 ft lb engine will leave the 400 ft lb in its dust regardless of the load or how steep the hill is period.
As for advertising the Dodge Ram have for years tried to convince us that the engine that has the most shaft torque has the most power which is not true. But they have the Ram guys convinced that it is.
I actually don't have any idea what you're talking about. You are talking torque at rpm so you're comparing 286 HP to 114 HP. What do you think I have wrong?
"the one capable of producing more torque would be able to climb the grade further than the other"
If you had said (the one capable of producing more horsepower would be able to climb the grade further than the other) I would not have had a problem with what you said.
As you have stated before torque does not tell you anything about the power an engine can produce. You need rpm and torque and when you do that you have defined horsepower.
I agree with everything you have said with the exception of your quote I gave above.
