how is rear wheel horse power different form horse power?

Answer 1

say the engine has 400 HP at the flywheel, by the time it travels through the transmission and down the driveshaft and through the rearend you are losing 20% of that 400 HP. so you would have 380HP. delivered to the rear wheels on a rear wheel drive vehicle.

Answer 2

Engine horsepower is the horsepower of the engine at the flywheel, that is, without any transmission or other gearing. Rear wheel horsepower is the amount of power turning the rear wheels. After going through the transmission and drivetrain, the amount of power will be slightly less due to friction and depending on what gear you're in. For example, first gear would give the wheels more torque or spinning power, but less speed, whereas in the last gear, the wheels spin faster but with less power.

Answer 3

Rear wheel horsepower takes into account the power lost in the drivetrain. By the time the power is transferred from the engines flywheel to the rear tire, power usually drops typically 10-25% depending a type of vehicle and setup.

Answer 4

Rear wheel horse power is measured at the rear wheels with a chassis dynometer

Regular horsepower is measured at the flywheel with an engine dynometer

Answer 5

Horse potential is the potential of one horse, or a level of fee at which a horse can paintings. a 10 hp engine as an occasion does the paintings of 10 horses. This exchange into the size in difficulty-loose use for motor vehicle engines interior the early years of motoring. An engine those days is measured in terms of BHP or Brake Horse potential. The call is derived from the braking gadget that's used to hold the engine table certain at the same time because it quite is making an attempt to flow. The BHP of an engine shows the quantity of potential an engine can produce at a definite engine velocity at extensive open throttle, accelerator totally pressed down. playstation , .... Horse potential isn't the quantity of paintings a pony can do,(never enable a cowboy paintings on your motor vehicle :-) There are 2 faculties of theory as to how the term horsepower exchange into derived, calculations employing pony potential, + 50%, lifting weight, or calculations employing a horse, turning a mill wheel. you're taking your %. as to which approach sounds extra romantic yet the two way on the tip of the day, a million horsepower = a standardised 33,000 feet·lbf/min

Answer 6

On a bench the engine can generate x horsepower. ( HP )

Installed in the vehicle, after the horsepower is degraded through the drive train the drive wheels, front or rear, receive brake horse power. ( BHP )

So to confuse it more, sometimes it is called Bench HP or Brake HP. Both will be shown as BHP.

Cheers.

Answer 7

It is the real horsepower after the drag/friction of everything between the motor and the tires is taken into account.
Shaft horsepower is the power made on a stand and no resistance on the shaft. Reason for this, some motors are used in multiple applications, 2 wheel dr, 4 wheel drive, etc.

Answer 8

Its not just "rear wheel HP", what it means is the horsepower created by the engine isn't necessarily the same HP you will have to the drive wheels.

Answer 9

A MECHANIC WOULD KNOW THAT AN ENGINE DYNO USES RESISTANCE(WATER BRAKE) WHEN MEASURING HORSEPOWER.