# How Is Motor Horsepower Calculated?

## How do you calculate horsepower?

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

## What is a horsepower equal to?

The electrical equivalent of one horsepower is 746 watts in the International System of Units (SI), and the heat equivalent is 2,545 BTU (British Thermal Units) per hour. Another unit of power is the metric horsepower, which equals 4,500 kilogram-metres per minute (32,549 foot-pounds per minute), or 0.9863 horsepower.

## How many cc is a 5hp engine?

300 cc5 HP is probably a lawnmower engine and could as much as 300 cc for the old side-valve mowers made by a famous American company.

## How many cc is a 4 hp engine?

Calculate the horsepower or CC by multiplying or dividing by 15. The general rule is for every 15 CC there is 1 HP. For example, for a 150 CC engine you would take 150 divided by 15, which equals 10 HP.

## How do you calculate BHP from CC?

cc or cu.cm metric conversions. Many people have asked for a relationship between horsepower and cc or how many cc in a hp. The short answer is about 14 to 17cc = 1 hp or about 1 cu.in. = 1 bhp for an ordinary, basic car.

## How do you calculate engine displacement from horsepower?

DETERMINING THE HORSE POWER OF AN ENGINE. Multiply the area of the cylinder by the length of stroke in inches and that product by the number of revolutions per minute then divide by the constant 10000 for two-cycle or 13400 for four-cycle engine, the result will be the I.H.P.

## What horsepower is 5252?

We need to get to horsepower, which is 550 foot-pounds per second, using torque (pound-feet) and engine speed (RPM). If we divide the 550 foot-pounds by the 0.10472 radians per second (engine speed), we get 550/0.10472, which equals 5,252.

## How many cc is a 30 hp engine?

SpecificationsType4-Stroke SOHC 3 Cylinder – 2 Valves/ Cyl.Displacement552 cc (33.7 cubic inches)Bore & Stroke61 mm x 63 mm (2.4 x 2.5 inches)Full Throttle RPM Range5,000-6,000 RPMRated Power25 HP @ 5,500 RPM (BF25); 30 HP @ 6,000 RPM (BF30)25 more rows

## How many kWh is 1 HP?

0.75 kilowatt hours1 horsepower hour (hp h) = 0.75 kilowatt hours (kWh)

## What is the rpm of 1 hp motor?

1HP 750 W 1 HP 3000 RPM Three Phase AC Induction MotorPower1HP 750 WSpeed (RPM)1440,2880Voltage230

## How is fan BHP calculated?

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%.More items…