how is 5252 derived Let s put this all together We need to get to horsepower which is 550 foot pounds per second using torque pound feet and engine speed
The 5 252 rpm cross boils down to the math behind horsepower and torque and also a bit of history Scottish engineer James Watt Why is the number 5252 used in the formula The number 5252 is a constant derived from the relationship between horsepower torque and RPM where HP and torque intersect at 5252
how is 5252 derived
how is 5252 derived
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This video is about how horsepower is calculated from torque in ft lbs and RPM It also explains where the 5252 number comes from and why Horsepower Torque The constant 5252 is derived from various conversion factors to ensure that torque and horsepower have the same unit of measure This equation demonstrates that for a given engine speed an increase in torque will result
If you look at a lot of dyno charts you ll notice that horsepower and torque always seem to cross around 5252 RPM Seriously Hp torque x rpm 5252 Note that at 5252 RPM torque and HP are equal At any RPM below 5252 the value of torque is greater than the value of HP Above 5252 RPM the value of torque is less than the value of HP
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If for some reason you see a dyno graph where horsepower and torque don t cross at all or cross at an RPM other than 5 252 the answer is likely to be one of two things In the first scenario the pull probably ended before The explanation offered by Fenske focuses solely on the manipulation of known equations to eventually relate power horsepower and torque By substituting and canceling out terms Fenske eventually arrives at
HP Torque x RPM 5252 At the bottom of this page the derivation of that equation is shown for anyone interested Engines and motors produce POWER by You add some modifications to your car increasing both power and torque and yet again they both cross at 5 252 RPM Why is this and is it meaningful This video discusses the physics
5252 YouTube
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IMG 5252 YouTube
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how is 5252 derived - If you look at a lot of dyno charts you ll notice that horsepower and torque always seem to cross around 5252 RPM Seriously