PS and BHP
 

What is exactly PS? I know its like the "new" way that manufacturers quote power but how does it relate to good old BHP? The reason I ask is because I thought the GSXR 600 had 100 BHP (or like 99BHP), anyway the suxuki GB website quotes it as having 120 PS. So whats what? :?
Also whats up with the Nm? why not stick to Lb/ft?.......and inches! ok maybe no the last as I work with engineering drawings and sometimes get confused with the older ones! :oops:

In post-war Germany, ‘PS’ was and is still used – which was/is a functional equivalent of the ‘British’ Horse Power. In reality, it equates as 1.0 HP = 1.07 PS. Today, it seems the Car/Bike advertisers use ‘PS’ to mislead the gullible public - as the same HP/BHP ‘sounds’ a little higher when expressed in PS!

This was unashamedly plagerised from another site, but is about right!

The following specs are all from the Suzuki web site


Seat Height: 800 mm
Dry Mass: 169 kg
Fuel Capacity: 17 litres
Max Torque: 64 Nm @ 7,200 rpm
Piston Displacement: 645 cc


Max Power: 72 PS (53.0 Kw) @ 9,000 rpm

I dident know PS wasent the same as BHP
Also it’s the only value given in non SI units ( although its SI version is given in brakets )

Like Scoobs said ( plagerised ) I think its to mislead or flatter us.

Small point: Is the correct SI representation of 645 cc given as 645 cm³?

Indeed, though cc is perfectly acceptable.

FYI - "PS" is short for Pferde-starke which is German for horsepower!

other posts correct about the slight difference in measurement - Germans have weaker horses! 8)

Or "Pferdestärke" for the truly pedantic.

OK so my German is a bit rusty! :?

according to my Bosch Automotive Handbook (the bible!)

1 PS = 735.499 Watts
1 HP = 745.70 Watts

or 1 HP = 1.0139 PS

also 1 PS = 1 ch (cheval vapeur = France)
(it also gives a French unit of 1 poncelet = 981 Watts, though I've never seen that unit used anywhere, must be peculiar to some discipline??)

Stick to kW, you know what you're getting. :lol:

More significant is the correction factor used in determining power, SAE, JIS, DIN etc

A poncelet is a small French ponce I think. He may or may not find discipline peculiar.....difficult to tell with the French.

:lol: :lol: :lol: