How is horsepower figured

It was the just marketing magic he needed to convince companies that the newfangled technology was the better power source. That breakthrough, as we all know, revolutionized both industry and transportation, and would eventually lead to the rise of steam ships and locomotives.

And it's also why buyers of everything from muscle cars to lawn mowers owe a debt of gratitude to James Watt. Users of lightbulbs too. Engineers posthumously honored Watt by naming a unit of power after him, the watt. Ironically, one "watt," doesn't equal one horsepower. For the record, watts 1.

In the end, the creation of horsepower was as much a result of good salesmanship as engineering savvy. James Watt knew that one without the other was like a cart without a, ahem, horse. To see the rubber-melting excitement lots of horsepower delivers, read about these white-hot American muscle cars. New Cars. Buyer's Guide. The other sliders will automatically move to show available ranges based on the range of your selected variable. Results will upload as your search criteria changes.

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Selected Products. How did you hear about us? When it comes to understanding how a dynamometer measures torque and calculates power, it will help to know a few more basic definitions and formulas.

If we hold a 10 lb. If we move displace the weight a distance of 3 feet we have done work. We have done 30 lb-ft of work. The definition of 1 Horsepower is displacing 1 lb. We are dealing with engines where the force and power are delivered in rotary motion.