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Kw vs Horsepower

Discussion in 'General' started by Stimps, Feb 1, 2006.

  1. Stimps

    Stimps New Member

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    Can somone please explain the diffrence between Killowatt and Horsepower ?

    Like 200 Kw = ? in Horsepower

    And 400 Hp = ? in Killowatt

    Is there some table for this ?

    Cheers .
     
  2. sixshooter

    sixshooter New Member

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    1 horsepower = 0.75 Kilowatt (approximately)
     
  3. minux

    minux Infidel Bear

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    Kilowatts ---->Horsepower = Kilowatts x 1.34
    Horsepower----> Kilowatts = Horsepower x 0.746


    SO 200kw = 268hp
    400hp = 298.4kw
     
  4. Stimps

    Stimps New Member

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    Thanks for the replys . So now I can say my 'SS which is 220 Kw is basically a 300 Horsepower ride .
     
  5. gocommygo

    gocommygo Guest

    haha lol you made my day!
     
  6. STEALTHY™

    STEALTHY™ So Wet For You!

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    yeah, my 160kw (stocko) works out to about 210-215hp.

    thats rear wheel, so for flywheel i can brag and say i have 300 too (160rwkw works out to roughly 220fwkw, hence almost 300 fwhp)
     
  7. sircruisealotVS

    sircruisealotVS Well-Known Member

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    horsepower is determined by how much force an engine can create.
    anything that can lift 550lb at a rate of one foot per second has 1hp.
    so using a vs ecotec as an example...which has 304Nm of torque @3600rpm..
    we do this calculation: torque x 6.2832 x revs divided by 33000=hp

    304 x 6.2832=1910.0928 x 3600=6876334.08 divided by 33000=208.37376
    so an stock ecotec has just over 208hp
    *note a simpler formula is: torque x rpm divided by 5252=hp.
     
  8. Troy711

    Troy711 Retired Old Fart Staff Member

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    huh? say it in engrish... :p
     
  9. Stewart1000

    Stewart1000 work done by ME

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    hp=tq rpm/5252
    hoursepower = torque x rpm devided by 5252

    5252 is somethgin about when things becoem equal or somethign liek that, i learnt it in tafe but cant remember exactley, can someone explain a bit more?
     
  10. Joes_meat

    Joes_meat Guest

    Google has a pretty good feature.

    type "220 kilowatts in horsepower" into a google search.

    It does other things too, search for "2 + 4 in roman numerals" or "3 kilometers in furlongs" etc.
     
  11. sircruisealotVS

    sircruisealotVS Well-Known Member

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    ok..i didnt explain it that great before cos i was tryna keep it short but maybe i can clear a few things up.
    to measure horsepower you need to have a distance of measurement...and because torque is displayed as ft-lb the figure 6.2832 is used (which is the circumference of a circle, with a one foot radius)
    its the distance which the force is applied per second that determines hp.
    and because the measurement of revs in a engine is revs/per minute a constant of 550 which applies to seconds, is multiplied by 60 (the amount of seconds in a minute)
    changing the constant to 33,000.
    you use these figures with the torque@rpm figures from your engine to complete the formula to find out your hp.
     
  12. sircruisealotVS

    sircruisealotVS Well-Known Member

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    lol...do u understand now?
    or is that just even more confusing?
     
  13. IanG

    IanG New Member

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    I hope some of this stuff is accurate.

    A kilowatt is a unit of energy and a horsepower is unit of work. [Strength] James Watt developed this while helping develop Steam Engines. They have been used together for a while. [Still are] -Horsepower at the crank, kilowatts at the rear wheels. Horsepower is starting to become obsolete. Three possible reasons: The metric system, Car salesmen talking bullshit and confused Americans.

    Horsepower is a British unit of measurement developed by James Watt based on how much work a horse can do. [Whose horse I don't know]

    One horsepower provides the ability to do 550 ft-lbs of work every second. 550 ft-lbs of work is any product of force (in pounds) and distance (in feet) equalling that number.

    Applying 55 lbs of force through a distance of 10 feet, for example, represents the same amount of work as 11 lbs. of force applied through 50 feet. The force can be used to lift objects against the pull of gravity, drag them along the ground against frictional forces, accelerate objects, etc.

    A 100 HP motor would let you do 550 X 100 or 55,000 ft-lbs. of work each second. It could, for example, lift 550 lbs. 100 feet in one second. To lift more weight at the same rate, or the same weight more quickly, you would need more horsepower.

    Answered by: Paul Walorski, B.A. Physics, And Part-time Physics Instructor


    A Watt is also British unit named after James Watt and was adopted by the Second Congress of the British Association for the Advancement of Science in 1889 and again by some French mob in 1960. The metric system originated in France. [A Watt is a standard unit of power defined as one Joule of energy transferred or dissipated in one second.]

    infinitepower.org & Wikipedia.org

    Here endith the lesson :coolpimp:
     

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    Last edited: Feb 4, 2006
  14. Sensations

    Sensations Guest

    Horse power was the old school was of working out power-but still used.

    New generation/era KW is what some use now.
     
  15. ucwepn

    ucwepn America just kicked in yo

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    KW is not really relevant when compared to NM, torque is what moves the car. So kw is how much power the engine can make and NM is how hard the engine can move the car.
     

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