- 135
- Grabiha
As the title says..
What are the differences between HP, BHP, RWHP, and so on?
- Thread starter thechadmartinez
- 4 comments
- 49,771 views
- 86,802
- Rule 12
- GTP_Famine
There isn't one.
hp = Horsepower; 1hp = 550ftlb/s
bhp = Horsepower measured on an engine using a braking dynomometer; usually used interchangeably (if incorrectly) with hp
rwhp = Horsepower measured at the rear wheels
I've not noticed the latter metric used in GT5.
hp = Horsepower; 1hp = 550ftlb/s
bhp = Horsepower measured on an engine using a braking dynomometer; usually used interchangeably (if incorrectly) with hp
rwhp = Horsepower measured at the rear wheels
I've not noticed the latter metric used in GT5.
- 2,083
- FreedomWeasel
To elaborate on RWHP or WHP, it's measured at the wheels and will always be less than the engine's output due to drivetrain friction.
Your engine may be rated for 200 hp, but your wheels aren't receiving all of that.
Your engine may be rated for 200 hp, but your wheels aren't receiving all of that.
HP is measured at the flywheel, BHP is very similar but many other things are attached to the engine which tries to measure loss of HP from attachments after the flywheel. (simple way of explaining, really much more complicated). WHP (RWHP) is the measure you would get on a standard dyno, the power that actually reaches the wheels. In a car will 300hp, the rear wheels get more like 225-250. 50-75 horses are lost as the power is transferred from the crankshaft to the wheels.
- 2,551
- somerset, England
- Willfred_1
15% to 25% of power can be lost due the gearbox more expensive and race ready gear boxes are closer to 15 where as cheap cars are more like 25
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