what is the difference between horse power and brake horse power?
06 November 2004, 07:55 PM
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what is the difference between horse power and brake horse power?
a heated argument has broken out as to what is the difference so any explanation would be greatly appreciated please
HELP!!
HELP!!
06 November 2004, 08:45 PM
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BHP is the measured useable power (called brake because that is what dynamometers effectively do, acts as a brake against which the engine must do work)
HP is the calculated power and is defined such that 1hp is the power required to lift 33,000lbs one foot in one min. A theoretical amount because obviously you could never do this test without using gears etc that would skew the result.
HP is the calculated power and is defined such that 1hp is the power required to lift 33,000lbs one foot in one min. A theoretical amount because obviously you could never do this test without using gears etc that would skew the result.
06 November 2004, 10:19 PM
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same thing mate
or maybe then meant at the flywheel figures atw etc etc
bhp and hp is the same u need that for top end and excellent for drag racing
then u get torque thats pickup speed, pulling power like me im a babe magnet i can pull
haha just kidding
u have both u will rock
well i have both anyway 610 ft torque and 700 bhp at the mo haha i aint bragging but its true
soon to be 680 or 690 ft torque amen
or maybe then meant at the flywheel figures atw etc etc
bhp and hp is the same u need that for top end and excellent for drag racing
then u get torque thats pickup speed, pulling power like me im a babe magnet i can pull
haha just kiddingu have both u will rock
well i have both anyway 610 ft torque and 700 bhp at the mo haha i aint bragging but its truesoon to be 680 or 690 ft torque
amen
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07 November 2004, 12:42 AM
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Originally Posted by Ray_li
how many horses to pull your carage along.
Imagen 300 horses pulling one car. that **** loads of power
Imagen 300 horses pulling one car. that **** loads of power
Nice, clear explanation, ajm; did you google it or was it real?
07 November 2004, 12:47 AM
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Originally Posted by Bubba po
What hell carage? Is it a car in the garage?
Nice, clear explanation, ajm; did you google it or was it real?
Nice, clear explanation, ajm; did you google it or was it real?
Bubba - I reckon it was real, cos he explains maths stuff that I struggle with
07 November 2004, 12:52 AM
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300 horses pulling a carriage or 1, does it matter? the only difference is acceleration because 300 horses or 1 they can only run at the same speed (u following?) so 300 horses still only get u to say 40 miles per hour (average speed of a horse for example)but the more horses pulling it the less effort required by each horse so should hit 40mph quicker. make sense? or am I talking bollox? (been drinking so wouldnt suprise me)
07 November 2004, 12:54 AM
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Originally Posted by davegtt
300 horses pulling a carriage or 1, does it matter? the only difference is acceleration because 300 horses or 1 they can only run at the same speed (u following?) so 300 horses still only get u to say 40 miles per hour (average speed of a horse for example)but the more horses pulling it the less effort required by each horse so should hit 40mph quicker. make sense? or am I talking bollox? (been drinking so wouldnt suprise me)
bollox m8 - don't worry about it though
07 November 2004, 07:57 AM
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Originally Posted by Bubba po
Nice, clear explanation, ajm; did you google it or was it real?
If you want it in new money:
1lb = (1/2.2046)kg <-- edited for bubba
1ft = 0.3048m
1min = 60 sec
g = 9.81m/s/s
We need to convert foot pounds per minute into Newton meters per second...
So 1hp = ((33,000/2.2046) x g x 0.3048) / 60 = 746 Watts or 0.746 kW
Last edited by ajm; 07 November 2004 at 11:45 AM.
07 November 2004, 11:43 AM
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Originally Posted by Bubba po
The lb to kg conversion's the wrong way round I think.
well spotted! Edit: I suppose a careless and embarrassing error proves I didn't google it!
07 November 2004, 12:42 PM
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Originally Posted by ajm
BHP is the measured useable power (called brake because that is what dynamometers effectively do, acts as a brake against which the engine must do work)
HP is the calculated power and is defined such that 1hp is the power required to lift 33,000lbs one foot in one min. A theoretical amount because obviously you could never do this test without using gears etc that would skew the result.
HP is the calculated power and is defined such that 1hp is the power required to lift 33,000lbs one foot in one min. A theoretical amount because obviously you could never do this test without using gears etc that would skew the result.
kind of understand that and TBH no-one in the argument was right anyway
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