The Human Body Engine

Information in regards to how much power a person can produce.
People power, not horsepower.
What is your capacity for work?

Jeff wrote:
A person is 1/12 of a hp. (I think that's for a work day)

Lyle Cummins
"Internal Fire"


Some say 1/3 hp but I do not think that would be for a full

work day.


"A Sicilian slaving at a sewer pump eight hours a day can

develop barely 1/10th of a horse power."

Further down the page:

"There lay the disadvantage of the slave; to exert a

horsepower, he would need a body which weighed 1,500


"Behemoth: The Story of Power"
by Eric Hodgins & F. Alexander Magoun


Best regards,



Kevin wrote:
Dear Jeff

1: The "Human Power Rating" as indicated in Mark's

Mechanical Engineering
Handbook is 0.2 HP for a hard working laborour, on a

sustained basis. An
athlete in top condition, such as the operator of a man

powered airplane,
can exert up to about 0.5 HP for a short time.


Crispin wrote:
If any of you are readers of the New Scientist back page

there is an entry
on this subject dealing with the moving of pigs of iron into

rail cars by
hand, up an 8 foot high slope. It discusses the work by Dr

Taylor (about
1905) who investigated this at some length.

The maximum power a well rested man (taking breaks on a

schedule) can
accomplish is about 210 watts average for an 8 hour day.

You can also work with the following (derived for manual

machine operators)

Bicycle rider, very fit, 200 watts for 30 minutes
Man pumping on a lever, 60 to 80 watts
Woman pumping on a lever 40 watts
Ox walking around a post pulling a lever, 245 watts, 5 hrs

per day, 50 kg
Donkey, 135 watts for 8 hrs a day, 35 kg pull
Camel, 50 kg pull, 8 hrs a day, 420 watts.

Resting a worker allows them to do about triple the work so

you are better
off working hard on a weight than working a bellows


Best regards

jordan Release Dates