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The equation to calculate horsepower is simple: Horsepower = Torque x RPM / 5,252.

BHP is the power measured at the flywheel, that’s the crankshaft power,,, One can measure, the power using this formula,,,,, HP=(RPM * T) / 5252. Where – HP = Horsepower. RPM = Rotations Per Minute (engine speed)

Does one horsepower equal one horse? Not quite. It’s a common misconception that one horsepower is equal to the peak power production of a horse, which is capable of a maximum of around 14.9 horsepower. By comparison, a human being is capable of approximately five horsepower at peak power production.

Horsepower, the common unit of power; i.e., the rate at which work is done. In the British Imperial System, one horsepower equals 33,000 foot-pounds of work per minute—that is, the power necessary to lift a total mass of 33,000 pounds one foot in one minute.

Let’s look a two 1 HP motors. The 1800 RPM, 1HP motor produces 3 ft. lbs of torque at 1800 RPM. The 3600 RPM, 1HP motor produces 1.5 ft.

Horsepower is how rapidly the vehicle can perform that work. For instance, a lightweight sports car that operates at high rpm may have high horsepower, but low torque. … Because there is generally a limit on how fast you can spin an engine, having higher torque allows for greater horsepower at lower rpms.

BHP = Q × P / (1714 × n)

Where: BHP = Brake Horsepower in Horsepower. Q = Flow Rate in gallons per minute. P = Pressure in pounds per square inch. n = Efficiency expressed as a decimal value*

- You can calculate the fan BHP by using the following equation.
- BHP = (Q(CFM)xSGxSP(in mmWG))/(6356 x Fan efficiency)
- Where,
- Q= Rate of flow (CFM)
- SG=Specific Gravity (For Air =1)
- SP=Static Pressure (in mmWG)
- You can consider the fan efficiency if you do not know it, it must be in range of 65-80%.

Stop counting when 1 minute has elapsed.

This is how many revolutions per minute, or RPM, the object makes. Instead of stopping the count at 1 minute, you may want to count for 2 or 3 minutes and then divide the count by the number of minutes to get the RPM if the object rotates slowly.

When considering human-powered equipment, a healthy human can produce about 1.2 hp (0.89 kW) briefly (see orders of magnitude) and sustain about 0.1 hp (0.075 kW) indefinitely; trained athletes can manage up to about 2.5 hp (1.9 kW) briefly and 0.35 hp (0.26 kW) for a period of several hours.

Right between 200 and 300 horsepower is the sweet spot for many drivers. Be cautious with models that approach 300 horsepower, unless the vehicle is a heavy truck or another large model.

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Power is a measure of the amount of work that can be done in a given amount of time. Power equals work (J) divided by time (s). The SI unit for power is the watt (W), which equals 1 joule of work per second (J/s).

Typical figures

A fairly typical small family car engine puts out, say, 60bhp (brake horse power) at 5000rpm. The same engine can be tuned or modified so that it gives 80bhp at 6000rpm. But although the power is greater, the peak torque can actually be less, as well as occurring at a higher engine speed.

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