Horsepower Output (kW). Usually labeled as HP or kW, this is the measure of the motors ability to deliver the torque required for the load at a rated speed. hp = 0.746 x kW; conversely, kW =1.34 x hp. How can you tell the hp of a motor? The quickest Read more…
This dynamometer is able to put on a load on the outboard motor engine and measure the power it can produce. Once the amount of power is known to us we can determine the torque force. To calculate the horsepower all we need to do is to multiply the torque Read more…
The Standard Association of Australia (SAA) adopted the Systeme International d’Unites (SI) in 1977 which determines the unit of power is best expressed as a kilowatt. One kilowatt is equivalent to 1.34 horsepower. To determine what a kilowatt is from a bhp figure, simply multiply the bhp value by 0.746. Read more…
1972. After 1972, an engines power output was quoted as “net horsepower,” and just like “gross horsepower,” it was measured at the crankshaft, so it too does not take into account drivetrain losses. When did net horsepower come out? In 1970 California passed a bill that demanded automakers quote “net” Read more…
[3] In the US customary system of measurement, which is non-coherent, the unit of power is the horsepower, which is defined as 550 foot-pounds per second (the pound in this context being the pound-force); similarly the gallon is not equal to a cubic yard but instead 231 cubic inches.” Is Read more…
Metric horsepower is 75 m kgf/s, which equals 735.49875 watts. On the other hand, imperial horsepower is exactly 746 watts. While watts are the SI unit of measurement for power, the amount of power generated by most large machines is so high that it’s impractical to use. What is 1 Read more…
What is the horsepower of my boat’s motor? The horsepower is usually painted in large numbers on the motor itself. Sometimes the horsepower is part of the model code. If you are unsure check the manual or ask your repairer. How do I find out the horsepower of my boat? Read more…
One SAE hp is the ability to lift 33,000 lbs one foot in one minute. One DIN hp (DIN stands for “Deutsche Industrie Normen” or “German Industrial Standard”) is the ability to lift 450000 kg one cm in one minute. For the same power the SAE measurement is thus 98.629% Read more…
The horsepower and torque figures that automotive manufacturers advertise for their vehicles are always crank numbers. Crank numbers are the HP and Torque values as measured at the engine. To see these values, an engine must be connected to an engine dynamometer (dyno for short). Is HP measured at the Read more…
A brake horsepower is defined as the external power supplied to the pump through the shaft. A water horsepower is defined as part of the shaft power that is actually delivered to the fluid. The pump efficiency is defined as ratio of water horsepower to brake horsepower. Is brake horsepower Read more…