WHP - it's horse power from wheels
HP - is horse power from crank

what is BHP?

Stock Tib has 139HP. How many WHP is it?

 

i belive that you lose 20 percent to the wheels...so whatever that would be, and BHP i belive is Brake Horsepower...thats what my head is telling me...but then again..i could be wrong dunno.gif

 

BHP= Brake HP which is just about the same as crank Hp or flywheel Hp.

Brake horse power, the net effective power of a prime
mover, as a steam engine, water wheel, etc., in horse
powers, as shown by a friction brake. See Friction brake
, under <span style="color:#800080">Friction</span>.

<span style="color:#0000ff">Friction brake</span> (Mach.), a form of dynamometer for measuring
the power a motor exerts. A clamp around the revolving
shaft or fly wheel of the motor resists the motion by its
friction, the work thus absorbed being ascertained by
observing the force required to keep the clamp from
revolving with the shaft; a Prony brake.

 

Loss from BHP -> WHP is about 10% - 20%

137BHP times 15% loss equals 119WHP
some more or less

 

So where exactly does the rest of the hp go when its lost? I know machines are only like 80% efficiant on average so does that get like transfered to heat energy or what?

 

<div class='quotetop'>QUOTE (Kit-Fox)</div><div class='quotemain'>So where exactly does the rest of the hp go when its lost? I know machines are only like 80% efficiant on average so does that get like transfered to heat energy or what?</div>

Drivetrain
<div class='quotetop'>QUOTE (Dmitry)</div><div class='quotemain'>WHP - it's horse power from wheels
HP - is horse power from crank

what is BHP?

Stock Tib has 139HP. How many WHP is it?</div>


http://www.rdtiburon.com/forum/showthread....ight=stock+dyno

 

<div class='quotetop'>QUOTE (Kit-Fox)</div><div class='quotemain'>So where exactly does the rest of the hp go when its lost? I know machines are only like 80% efficiant on average so does that get like transfered to heat energy or what?</div>

The majority of the horsepower is lost through the exhaust. This is why a turbo is more efficient than a supercharger. The turbo uses the exhaust stream to turn a turbine, compresses air and forces it in the engine. A supercharger uses a belt that runs off of the engine to do the same thing. Thus, a turbo is more efficient because it is recovering lost power vs a supercharger which needs more power to create power.

 

Thanx a lot!

 

<div class='quotetop'>QUOTE (raehtz10)</div><div class='quotemain'>The majority of the horsepower is lost through the exhaust. This is why a turbo is more efficient than a supercharger. The turbo uses the exhaust stream to turn a turbine, compresses air and forces it in the engine. A supercharger uses a belt that runs off of the engine to do the same thing. Thus, a turbo is more efficient because it is recovering lost power vs a supercharger which needs more power to create power.</div>

This is not quiet so. Exhaust only robs 3-7% of your power, pulleys and all the belts another 3-5%, drivetrain 7-10%

 

Drivetrain loss on FWD is around 15%. The energy lost through heat is not included in Crank HP form as it isn't used at all, its just expelled. Heat loss is more than 5%, its more like 20%. Heat also creates more wear and tear on parts... thats why heat sucks, unless your outside in the winter.