Why Engines are Commonly Measured in Horsepower

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In this video:
We owe the “horsepower” unit of engine power measurement to Scottish engineer James Watt.
In the early 1780s, after making a vastly superior steam engine to the then classic Newcomen steam engine, Watt was looking for a way to market his invention, advertising the fact that his engine used about 75% less fuel than a similarly powered Newcomen, among many other improvements.
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[@TodayIFoundOut]

Speaking of horses check out this video and find out the answer to the question- Do Mounted Police Officers Have to Clean Up Their Horse’s Poop?: kzbin.info/www/bejne/ZpOslayrgdalbaM

[@SIMKINETICS]

American engineers, like me, specify power output in both Imperial units (horsepower) and Metric units (watts). Power is work or energy transmitted per unit time; one horsepower is defined as the work required to lift 550 lbs to a height of one foot in one second, which is equal to 745.7 watts (metric). For rotating power (the most common), power is calculated by multiplying torque by angular velocity, so for any given power level, torque & rpm are inversely proportional so that higher rpm means lower torque. Bicyclists can produce pedaling torque equivalent to some typical automobile engines, but they do it at much lower rpm so their power output is only a fraction of the IC engine or automotive electric motor operating at typical driving rpm.

[@alexg3348]

Now THAT is something I have wanted to know in all my years! Good info! Thx

[@Sith90lord]

1:46 - "he made sure his product would always overdeliver" The exact opposite in today's marketing... You have to expect a product to underdeliver or you will be disappointed...

[@HipposHateWater]

Only in major corporate marketing (which stubbornly cling to antiquated doctrine), or small business owners who have no clue what they're doing. Over-delivering is much more common among smaller to mid-size businesses, where word-of-mouth is far more important, and neglecting your customer isn't something you can afford.

[@milksheihk]

I'd always heard that Horsepower was equivalent to the lifting power of a team of four pit horses(used in coal mines, to winch the mining carts up & down) on a windlass. To make things more confusing a single real horse is capable of 16 horse power in short bursts.

[@bcubed72]

...and a strong human can output 1HP in short bursts.

[@SlyPearTree]

A marketing term that is actually useful and precisely defined? Did pigs fly during that period?

[@rbdriftin]

What about zebraforce or llamathrust?

[@DangerAngelous]

God a Simon Whistler video so old he wasn’t even a physical body

[@Shimulnath96]

Thank you

[@Flyingsangwich]

im just wondering how it felt in the 1700s when you have 50 horses pulling your 1 carriage... that butt dyno

[@adamkendall997]

Watt?

[@chivalryalive]

Who?

[@paulmag91]

Watt.

[@thomasblackwell9507]

Third base.

[@davidliddelow5704]

Watt actually way under estimated how much power a horse can output. If you look at an actual 1 hp motor they are tiny, about the size of your fist. Watt got away with this by never selling small engines. The smallest one he sold was 150 hp, equivalent to 10 actual horses.

[@scottmitchell8273]

horsepower was first described by an accountant as two horses walking in a circle twenty feet in diameter doing x revolution.. it's nothing but an accountant term

[@itsabeer4680]

James watt

[@BrianH1313]

Man, I actually knew this useless information. Learned it in School. Wow, school really does teach useless information.

[@klyanadkmorr]

Explaining knowledge worth is equal to the person holding it

[@kelpking4484]

How is this useless information its useless if your a simple minded dweeb

[@BanMetz1zahBp3h]

To make us working slaves

[@Bigbuddyandblue]

"Who came up with the measurement of horsepower?" Watt. "I said, who came up with the measurement horsepower?" WATT!! "What?" Yes. "Yes what?" Yes, Watt. "What?" Yes...

[@XplodingTurtle]

Mike Roberti nice one

[@EthelredHardrede-nz8yv]

"Wait.. Who's on third? Guess Who.

[@canadiot2735]

On the topic of puns his new engine was "revolutionary"

[@thomasblackwell9507]

But Abbot… AAABBBBBBOOOTTT!!!!!!

[@PikaPetey]

ponies

[@chrisrobertson1929]

Bhp...sae...doc .tr...or the famous vm. Horsepowernumbet if you make it too 1000. Ohhhh the magic Dyno triples that Lol....

[@kelpking4484]

Darn my car has as much power as 180 horses

[@yourgrandmotherspimp1280]

If your car is 2,700 bhp then yes, since 1 horse has a max output of 15bhp

[@gruntsex]

james wat

[@Jimpozcan]

Why Engines are Commonly Measured in Horsepower because the US is still stuck in the Dark Ages whilst the rest of the World has moved on to the metric system

[@AGeeksTouch]

jimpozcaner North America* Canada still is undecided.

[@XplodingTurtle]

jimpozcaner thats why i never learned about kw in school.... only hp

[@thom1218]

+jimpozcancer Says an oblivious clown whose continent is rapidly returning to the Stone Age. Now be a good little kuffar and teach your daughters to cover themselves with burkas so they can enjoy the privilege you've brought to them of being able to live in a future with Sharia law. I hear your new masters use the metric system like you do, so everything's on the up-and-up, I suppose.

[@yourgrandmotherspimp1280]

Im from UK, bhp and mph are superior but metric over imperial for measuring lengths and volumes. As for temperature, Celsius is the only one that makes sense

[@vladi420]

a human pedaling a bike, 3 horse power. a horse not even one. I call this Bullshit

[@JamesParus]

Vladimir Mihnev try it for a full workday.

[@vladi420]

James Parus The number is for a tour de France favorite, and he will be able to well almost. But this still the is just no way a good grow horse is substantially more than one lame HP the speed it can move it massive body and the riders. A this is at least 500kg going up to 50 km/h a 3,5 to 4 HP scoter is in a world of hurt when trying to get to 45 if the rider weight is more than 90 kg

[@JamesParus]

yes, horse is probably more than 1hp, but 4hp scooter goes easily 60km/h, even with 90kg driver. Even old Finland standard moped with 1.5hp's go 40+. And with no aerodynamics. Same power to race bicycle aerodynamics, would go pretty fast.

[@SIMKINETICS]

Wrong! You're *way* off! Even the strongest bicyclists in the world, Olympic & Tour de France sprinters, can only produce about 1,600-1,900 watts of power (1.2-1.4 horsepower) at best, and only for a few seconds before lactic acid buildup in their muscles stops that power-level cold! Average bicyclists can only sustain power levels around 200 watts (0.27 hp) with high exertion, but usually much less (50-150 watts) at normal riding levels. Try doing some research *before* you make unsubstantiated claims on KZbin.

[@HipposHateWater]

@SIMKINETICS I thought KZbin was THE place to go for that! Damn, what will I do with all of my own unsubstantiated nonsense now? :'(

[@FatGuyWithAKatana]

so my car can do 9,720,000 foot pounds of work in 60 seconds? cool