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Brake Horse power to newton meter torque

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  • Brake Horse power to newton meter torque

    How do I convert 480 Brake Horse Power to newton meter torque?

  • #2
    Re: Brake Horse power to newton meter torque

    Horsepower to Torque is not a direct conversion. You would also need to know the RPM. As the conversion would differ for each RPM.

    Here is some additional information, in addition to the formulas you need.
    http://www.car-videos.net/articles/h...wer_torque.asp

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    • #3
      Re: Brake Horse power to newton meter torque

      how do you work out brake horse power??

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      • #4
        Re: Brake Horse power to newton meter torque

        Originally posted by Unregistered View Post
        how do you work out brake horse power??
        You have to know the torque and the rotational speed.

        In English units, you need torque in foot-pounds, and rotational speed in radians per second. Multiply the two to get power in foot pounds-force per second; 1 HP = 550 ft-lbf/s

        In metric units, the product of torque in newton-meters, and rotational speed in radians per second is power in watts. 1 HP = 746 W (rounded)

        Note: If you have rotational speed in RPM, multiply by 2*pi and divide by 60 to get radians per second.

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        • #5
          Re: Brake Horse power to newton meter torque

          Originally posted by Carel View Post
          How do I convert 480 Brake Horse Power to newton meter torque?
          HP= Torque in Newton meters x RPM
          __________________________

          5252

          You must know RPM or max. and min rpm of the rotor or wheel and you will have max and min HP

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          • #6
            Re: Brake Horse power to newton meter torque

            Originally posted by Unregistered View Post
            HP= Torque in Newton meters x RPM
            __________________________

            5252

            You must know RPM or max. and min rpm of the rotor or wheel and you will have max and min HP
            I agree both torque and rpm are needed.

            Your constant of 5252 is wrong. It results from 1 HP = 33000 ft·lbf/min, and converting revolutions to radians (2*pi). Dividng yields about 5252, but only works for torque in ft·lbf.

            For metric, multiply RPM by 2*pi/60 to get radians per second, that times newton·meters of torque gives watts; divide by 745.7 W/hp to get horsepower. That net result of all that is replace 5252 by 7120.9 (or 7121). Of course in metric, the proper thing to do is stop with watts or kilowatts. Horsepower is for farmers.

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            • #7
              Re: Brake Horse power to newton meter torque

              plz tell me the conversion of horse power to newton meter

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              • #8
                Re: Brake Horse power to newton meter torque

                Originally posted by Carel View Post
                How do I convert 480 Brake Horse Power to newton meter torque?
                how do i convert 110 newton meters to brake horse power

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                • #9
                  Re: Brake Horse power to newton meter torque

                  Originally posted by Unregistered View Post
                  how do i convert 110 newton meters to brake horse power
                  You also need RPM. See post #4 or #6 for details.

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                  • #10
                    Re: Brake Horse power to newton meter torque

                    [QUOTE=JohnS;72849]I agree both torque and rpm are needed.


                    Your constant of 5252 is wrong. It results from 1 HP = 33000 ft·lbf/min, and converting revolutions to radians (2*pi). Dividng yields about 5252, but only works for torque in ft·lbf.

                    For metric, multiply RPM by 2*pi/60 to get radians per second, that times newton·meters of torque gives watts; divide by 745.7 W/hp to get horsepower. That net result of all that is replace 5252 by 7120.9 (or 7121). Of course in metric, the proper thing to do is stop with watts or kilowatts. WE ARE PERFECT RESULT FOR ENGINE TESTING PROCEDURE I AGREE WIT THIS COMMENTS

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