Re: Cummins more efficient than SMART???

From: Eric (huffy340@gmail.com)
Date: Tue Nov 17 2009 - 22:09:13 EST


> http://www.pickuptrucks.com/html/stories/gvb/page4.html
>
> it says:

> Let’s get the calculator out.

> The Smart Fortwo CDI has an empty curb weight of 1,609-lbs and
> gets a combined mileage rating of 56-mpg (51 city / 64 highway)
> using a European driving cycle, according to Bosch.

> truck. This would give a combined rating of 16.4-mpg using an
> EPA weighted average of 55-percent city and 45-percent highway
> driving. But for argument's sake, let's say it's only 16-mpg. The
> empty curb weight of a Ram 2500 Mega Cab 4x4 with an auto tranny
> is 6,875-lbs.

> At 4.27 times the weight of the Smart, pound for
> pound the Ram is over 20% more efficient. If their powertrains
> and weights could be scaled down or up equivalently, the Ram
> could get 68.3-mpg and the Fortwo could get 13.1-mpg.

That is pretty interesting.

For a car that small, they should say if the european driving cycle
has 1 or 2 people in it. Not much of a diff for the truck, but a
200 lb person is 12% of the weight of the car !



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