Scania v8 730hp

Torque is just a number, horsepower makes the work. When the torque goes up, so does hp. HP= Torque x rpm

 

I know if you do the math there's just a fraction in it but, it that were true why are scania getting more torque per hp than the Volvo ? I'm not trying to be a smarts** I just don't understand it!

 

Im pretty sure that hp is calculated from the torque readings, the torque I believe is the actual twisting force on the crank shaft, ( like an airgun for removing your tyre, it will have the torque force marked on it) torque is the all important figure . I've always suspected Volvo put higher hp badges on the trucks than they actually producing. My 420 hp scanias would hold into the 460 hp volvos on any hill, an old 143 450 hp would annihilate them! That's why I always kept the volvos on light work like dry freight and used the scanias for fridge and livestock work.

 

Because max torque and max hp are not usually at the same rpm, except some DAF engines. Scania has limited the torque more at max hp rpm.

The formule when using Newtonmeters is: HP = Nm x rpm / 7019

So let's take 3500 Nm at 1200 rpm: 3500 x 1200 / 7019 = 598 hp

Then 730 hp at 1800 rpm : 7019 x 730 / 1800 = 2847 Nm

Torque is a static number but piston engines must be spinning to make any torque so there's always also hp. Electric engines can make torque at zero rpm but then they don't have any hp.

Torque per hp is useless comparison.

 

Today it's September
11th, no matter what your beliefs are today is the day we show our respect as gentlemen and ladies to our fellow friends and colleges on this forum, Today we ain't Americans and Europeans : today we are all colleagues , we all know of a fellow countryman lost in 9/11, bit today we are truck drivers, today we are friends!

 

I got a proper drive of an r730 today, holy sh**, the power is mental! The little finishing touches make it feel special too, 41 tons on it today , I could slow right down behind other trucks on steep hill then just drop half a gear and accelerate as if it was empty, unbelievable ! The two pedal auto is nice too but I think I'd like a clutch pedal too, I'm not sure if it's as light on fuel as they say, I got 9 mpg but then again I was getting carried away with the power messing around so that may not of helped