Does it affect mpg?

[(RIP) PLANK]

Originally Posted by Adz

Its not over length & doesn't need CAT 1 / 2 / 3 & is legal FACT

They way they got round it for the UK market was to only put the 4 wheel tractor units on sale in the UK & then Volvo followed suite.

You will see more bull nose recys & where there more commonly used as the Dutch do many & various axle conversions & the bull nose models in general had bigger engine options.

look, this is going way off course, i reffered to one specific scania model circa 1990, not current models, so your point is missing the point! The point is tractor units are not the most aerodynamic vehicles on the road and are designed for overall capacity not fuel efficency - that was my point and it is still very true.

For example, take a given truck and through an aerodynamic cab profile increase the fuel efficency by 10% and in doing so reduce its overall load capcity by 10% you now need 11 loads were there were 10 so 10% more trucks on the road and 10% more fuel used, not gains whatsoever.

in these new fuel efficent times economy will drive design, but only to an extent it will allways be a compromise;

my point in short:

Whatever you bolt to your roof will afect fuel economy - full stop.

and comparing it to a huge pantechnicon will not help!

Now lets get back on topic