Quote:
Originally Posted by DifferentPointofView
I think that modding the back is a bad idea. if you boat-tail, people in miata's and small things will get in there and tailgate... that' ain't gonna be pretty. The best bet is to smooth out the front and get rid of Cd there. as well as some frontal area drag.
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At these speeds - the trailing edge will show much more significant gains. But, given the longness - I'm fairly certain flow has gone turbulent by the time you reach the end of the trailer....
In any case - you're right about the cost of things.... The cost per ton for a semitruck, as it is now, is pretty cheap. Not comparable to rail, but much cheaper than any of our cars or trucks. I really need to find that fuel and efficiency breakdown by industry chart....