How do I convert 480 Brake Horse Power to newton meter torque?
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Brake Horse power to newton meter torque
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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.carvideos.net/articles/h...wer_torque.asp

Re: Brake Horse power to newton meter torque
Originally posted by Unregistered View Posthow do you work out brake horse power??
In English units, you need torque in footpounds, and rotational speed in radians per second. Multiply the two to get power in foot poundsforce per second; 1 HP = 550 ftlbf/s
In metric units, the product of torque in newtonmeters, 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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Re: Brake Horse power to newton meter torque
Originally posted by Carel View PostHow do I convert 480 Brake Horse Power to newton meter torque?
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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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Re: Brake Horse power to newton meter torque
Originally posted by Unregistered View PostHP= 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
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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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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