A Simpler Explanation Of The Measurement Of ONE HORSE POWER

We have a lot of Amish in our area. Most of them have a buggy pulled by one horse.
Does that count:@

One Horse Power Hybrid



Wonder how many miles per bail?

One horsepower to run up stairs sounds right. According to Wikipedia, A healthy human can produce 1.2 horsepower briefly, but 0.1 over a sustained period. Trained athletes can produce 2.5 housepower briefly, and Usain Bolt produced 3.5 horsepower in breaking the 100 meter dash record in 2009.

A typical plow horse can generate about one horsepower over a sustained period. A horse generated 14.9 housepower (briefly) measured at the 1926 Iowa state fair.

Boon Docker wrote:
One Horse Power Hybrid



Wonder how many miles per bail?

Wonder which group will protest its emissions? :)

Housted wrote:
One horsepower equals 550 foot pounds (pound feet) per second.

In high school, in physics class, I generated 1 horsepower by running up a flight of stairs. :)

Housted

Does this mean a horse pounds each foot 550 times, or all four 550 times for a grand total of 2,200 times :h

550 times is just idling.

Housted wrote:
One horsepower equals 550 foot pounds (pound feet) per second.

In high school, in physics class, I generated 1 horsepower by running up a flight of stairs. :)

Housted

I'm NOT trying to start once again that infamous RV/truck owners' timeless discussion ... BUT: Isn't all horsepower the same? And also don't modern rotating machines merely convert their available horsepower into the required rotating torque at the required location using various gears and driveshafts?

Now here's what I'd sure like to have explained ... why a 300 horsepower diesel RV engine can "tow better" than a 300 hrosepower gas RV engine? That has never made sense to me. :h

So one HP is like moving a 550 lb weight (against gravity.. lifting) one foot of distance every second?

pnichols wrote:

Housted wrote:
One horsepower equals 550 foot pounds (pound feet) per second.

In high school, in physics class, I generated 1 horsepower by running up a flight of stairs. :)

Housted

I'm NOT trying to start once again that infamous RV/truck owners' timeless discussion ... BUT: Isn't all horsepower the same? And also don't modern rotating machines merely convert their available horsepower into the required rotating torque at the required location using various gears and driveshafts?

Now here's what I'd sure like to have explained ... why a 300 horsepower diesel RV engine can "tow better" than a 300 hrosepower gas RV engine? That has never made sense to me. :h

Horsepower doesn't convert to torque nor vice versa. Torque is constant over the RPM range, while Horsepower is a straight line function of RPM. Thus, the diesel engine, which operates with a typical limit of 2400 RPM produces more torque than a typical gas engine which operates up to 5500 RPM. Another factor that produces torque is larger displacement (BIG pistons)

larry cad wrote:

Horsepower doesn't convert to torque nor vice versa.

Well actually, it does. HP = Torque X RPM / 5252 and Torque = HP X 5252 / RPM