[sub_ETCS_ret]

Originally Posted by parish8

Tq is a static measurement. There is no way to predict how much work you are going to be able to perform if you only know tq. Add rpm to tq and now you have hp. With that you can now calculate how much work(how fast) you can do.

I have a number of examples.

2 trucks both the same weight. One has 2000tq/1000hp. The other has 1000tq/1000hp. Both are geared optimally. Who wins? It is a tie.

Now turn it around. One truck has 1000tq/2000hp. The other has 1000tq/1000hp. The truck with more hp will be much faster.

There is a reason all of the calculators ask hp and not tq.

Another example is a turbine. They only make a few ftlb of tq but something like 400hp and they push tanks. Tq doesn't matter. It can be manipulated with gearing. Hp can not.

You will be faster if you can push your tq to a higher rpm even if you do not increase your tq.

Thanks! Great examples.

I'm pretty smart but sometimes you gotta break it down to me in the form of Dick, Jane, and Spot scenarios. [emoji1]