Engine horsepower is measured using a dynamometer, but what the dynamometer really does is measure the torque output of the engine, as well as the RPM – or “revolutions per minute”. These numbers are plugged into a formula (torque x RPM / 5,252) to determine the horsepower. What determines horsepower Read more…
The American Revolution’s armies got their horsepower from horses. These animals carried cavalrymen into battle, pulled cannons, carts and wagons of all description, hauled baggage on their backs, moved messengers swiftly over countless miles, and brought officers and gentlemen to wherever they needed to be. Did the British use horses Read more…
Horsepower is officially defined as “the amount of energy required to lift 550 pounds, one foot, in one second.” This definition dates back to when cars didn’t even exist and, despite the worldwide acceptance of the metric system (America not withstanding) in which feet have been replaced by meters, the Read more…
The horsepower unit derives from a marketing gimmick devised by James Watt. When attempting to sell his newly invented steam engine in the 1770s, Watt realised that many of his customers would use the machine to replace horses, so he set out to measure the power delivered by a horse. Read more…
foot-pound-second. Horsepower (hp) is a unit of measurement in the foot-pound-second (fps or ft-lb/s) or English system, sometimes used to express the rate at which mechanical energy is expended. Is horsepower is a metric unit? The electrical equivalent of one horsepower is 746 watts in the International System of Units Read more…
In the American Top Fuel class of drag racing, V8 engines displacing 500 cu in (8 L) today produce outputs of over 7,000 kW (10,000 hp). and 10,000 N⋅m (7,400 lb⋅ft). What’s the most powerful V8 engine? Scroll down to see 20 of the most powerful V8 engines ever built. Read more…
550. James Watt determined that one horse could exert 330 pounds of force in moving a load 100 feet in one minute. also be expressed as 1 hp = 33,000 foot-pounds/ minute or 1 hp = 550 foot-pounds/second. $ Refer to the example of one person exerting 40 pounds of Read more…
Because engineering costs. The amount of over-engineering it would take to make the 4 cylinder engine even handle 400 hp (much less being reliable at it) is far more than the cost of simply building the 5.7 liter engine to 400 hp in the first place (I use “building the Read more…
Large displacement American V8s are typically pushrod engines, and this engine design has characteristics that make it more difficult to produce high horsepower per liter. Why were old V8s so underpowered? The change to unleaded gasoline required lower compression. Lower compression means less power. Emission and pollution controls also reduced Read more…
The most powerful American cars ever 2022 Lucid Air Dream Edition Performance 1,111 hp. 2021 Tesla Model S and Model S Plaid: 1,020 hp. 2018 Dodge Challenger SRT Demon: 808 hp. 2020 Dodge Challenger SRT Super Stock: 807 hp. 2022 Dodge Challenger SRT and Charger SRT Jailbreak. 2019 Dodge Challenger Read more…