Anchor ads are not supported on this page.

4S Ranch Allied Gardens Alpine Baja Balboa Park Bankers Hill Barrio Logan Bay Ho Bay Park Black Mountain Ranch Blossom Valley Bonita Bonsall Borrego Springs Boulevard Campo Cardiff-by-the-Sea Carlsbad Carmel Mountain Carmel Valley Chollas View Chula Vista City College City Heights Clairemont College Area Coronado CSU San Marcos Cuyamaca College Del Cerro Del Mar Descanso Downtown San Diego Eastlake East Village El Cajon Emerald Hills Encanto Encinitas Escondido Fallbrook Fletcher Hills Golden Hill Grant Hill Grantville Grossmont College Guatay Harbor Island Hillcrest Imperial Beach Imperial Valley Jacumba Jamacha-Lomita Jamul Julian Kearny Mesa Kensington La Jolla Lakeside La Mesa Lemon Grove Leucadia Liberty Station Lincoln Acres Lincoln Park Linda Vista Little Italy Logan Heights Mesa College Midway District MiraCosta College Miramar Miramar College Mira Mesa Mission Beach Mission Hills Mission Valley Mountain View Mount Hope Mount Laguna National City Nestor Normal Heights North Park Oak Park Ocean Beach Oceanside Old Town Otay Mesa Pacific Beach Pala Palomar College Palomar Mountain Paradise Hills Pauma Valley Pine Valley Point Loma Point Loma Nazarene Potrero Poway Rainbow Ramona Rancho Bernardo Rancho Penasquitos Rancho San Diego Rancho Santa Fe Rolando San Carlos San Marcos San Onofre Santa Ysabel Santee San Ysidro Scripps Ranch SDSU Serra Mesa Shelltown Shelter Island Sherman Heights Skyline Solana Beach Sorrento Valley Southcrest South Park Southwestern College Spring Valley Stockton Talmadge Temecula Tierrasanta Tijuana UCSD University City University Heights USD Valencia Park Valley Center Vista Warner Springs

All about horsepower

Heymatt:
Why are car engines measured in horsepower? What does horsepower mean and how much horsepower does one horse generate?
— Motorhead, Escondido

Sponsored
Sponsored

Engines have been measured in horsepower since James Watt, who refined early steam engines, coined the term in the late 18th Century so that Josiah Q. Public IV, esq. could relate to the power of new-fangled machinery. His estimate that one horse could move 550 pounds of weight one foot in one second has proven to be pretty accurate, though horses can do ten times that much in short bursts of effort. The average human can usually generate a bit more than 1HP for a second or two. An elite athlete can make three times that much power.

Horsepower has never been a popular term. People were calling it “fallacious” in the early 19th Century and 90 years later predicting it had “seen its best days” since “as a scientific term it [had] been much abused.” Apparently, the neigh-sayers (ha!) were wrong, since we still use HP to measure a car’s power output. The watt, named after James Watt, would be a more useful term to use since it incorporates into SI units of measurement, but as long as auto manufacturers keep using the term, horsepower will stick around.

Here's something you might be interested in.
Submit a free classified
or view all
Previous article

Croome Brothers Trio, Jack Tempchin, Ricky, Swami & the Bed Of Nails, Kahlil Nash

Acoustic and electric in Del Mar, La Jolla, Little Italy, and City Heights
Next Article

San Diego Reader 2024 Music & Arts Issue

Favorite fakers: Baby Bushka, Fleetwood Max, Electric Waste Band, Oceans, Geezer – plus upcoming tribute schedule

Heymatt:
Why are car engines measured in horsepower? What does horsepower mean and how much horsepower does one horse generate?
— Motorhead, Escondido

Sponsored
Sponsored

Engines have been measured in horsepower since James Watt, who refined early steam engines, coined the term in the late 18th Century so that Josiah Q. Public IV, esq. could relate to the power of new-fangled machinery. His estimate that one horse could move 550 pounds of weight one foot in one second has proven to be pretty accurate, though horses can do ten times that much in short bursts of effort. The average human can usually generate a bit more than 1HP for a second or two. An elite athlete can make three times that much power.

Horsepower has never been a popular term. People were calling it “fallacious” in the early 19th Century and 90 years later predicting it had “seen its best days” since “as a scientific term it [had] been much abused.” Apparently, the neigh-sayers (ha!) were wrong, since we still use HP to measure a car’s power output. The watt, named after James Watt, would be a more useful term to use since it incorporates into SI units of measurement, but as long as auto manufacturers keep using the term, horsepower will stick around.

Comments
Sponsored
Here's something you might be interested in.
Submit a free classified
or view all
Previous article

Didja know I did the first American feature on Jimi Hendrix?

Richard Meltzer goes through the Germs, Blue Oyster Cult, Ray Charles, Elvis, Lavender Hill Mob
Next Article

Centennial Salute to San Diego’s Military, East Village Block Party, Birding Basics Class

Events March 29-March 30, 2024
Comments
Ask a Hipster — Advice you didn't know you needed Big Screen — Movie commentary Blurt — Music's inside track Booze News — San Diego spirits Classical Music — Immortal beauty Classifieds — Free and easy Cover Stories — Front-page features Drinks All Around — Bartenders' drink recipes Excerpts — Literary and spiritual excerpts Feast! — Food & drink reviews Feature Stories — Local news & stories Fishing Report — What’s getting hooked from ship and shore From the Archives — Spotlight on the past Golden Dreams — Talk of the town The Gonzo Report — Making the musical scene, or at least reporting from it Letters — Our inbox Movies@Home — Local movie buffs share favorites Movie Reviews — Our critics' picks and pans Musician Interviews — Up close with local artists Neighborhood News from Stringers — Hyperlocal news News Ticker — News & politics Obermeyer — San Diego politics illustrated Outdoors — Weekly changes in flora and fauna Overheard in San Diego — Eavesdropping illustrated Poetry — The old and the new Reader Travel — Travel section built by travelers Reading — The hunt for intellectuals Roam-O-Rama — SoCal's best hiking/biking trails San Diego Beer — Inside San Diego suds SD on the QT — Almost factual news Sheep and Goats — Places of worship Special Issues — The best of Street Style — San Diego streets have style Surf Diego — Real stories from those braving the waves Theater — On stage in San Diego this week Tin Fork — Silver spoon alternative Under the Radar — Matt Potter's undercover work Unforgettable — Long-ago San Diego Unreal Estate — San Diego's priciest pads Your Week — Daily event picks
4S Ranch Allied Gardens Alpine Baja Balboa Park Bankers Hill Barrio Logan Bay Ho Bay Park Black Mountain Ranch Blossom Valley Bonita Bonsall Borrego Springs Boulevard Campo Cardiff-by-the-Sea Carlsbad Carmel Mountain Carmel Valley Chollas View Chula Vista City College City Heights Clairemont College Area Coronado CSU San Marcos Cuyamaca College Del Cerro Del Mar Descanso Downtown San Diego Eastlake East Village El Cajon Emerald Hills Encanto Encinitas Escondido Fallbrook Fletcher Hills Golden Hill Grant Hill Grantville Grossmont College Guatay Harbor Island Hillcrest Imperial Beach Imperial Valley Jacumba Jamacha-Lomita Jamul Julian Kearny Mesa Kensington La Jolla Lakeside La Mesa Lemon Grove Leucadia Liberty Station Lincoln Acres Lincoln Park Linda Vista Little Italy Logan Heights Mesa College Midway District MiraCosta College Miramar Miramar College Mira Mesa Mission Beach Mission Hills Mission Valley Mountain View Mount Hope Mount Laguna National City Nestor Normal Heights North Park Oak Park Ocean Beach Oceanside Old Town Otay Mesa Pacific Beach Pala Palomar College Palomar Mountain Paradise Hills Pauma Valley Pine Valley Point Loma Point Loma Nazarene Potrero Poway Rainbow Ramona Rancho Bernardo Rancho Penasquitos Rancho San Diego Rancho Santa Fe Rolando San Carlos San Marcos San Onofre Santa Ysabel Santee San Ysidro Scripps Ranch SDSU Serra Mesa Shelltown Shelter Island Sherman Heights Skyline Solana Beach Sorrento Valley Southcrest South Park Southwestern College Spring Valley Stockton Talmadge Temecula Tierrasanta Tijuana UCSD University City University Heights USD Valencia Park Valley Center Vista Warner Springs
Close

Anchor ads are not supported on this page.