Quote:
Originally Posted by trebuchet03
And that said - according to that chart - aero beats tires around 20mph.. what gives? I may be reading that chart wrong (whenever I use a chart like that - the x axis is zero for everything)...
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The one right over the 50mph quote, right? It seems about right according to the graph. At 50mph aero power is about the same (It looks it be slightly less, but not by much) as rolling power, and after that aero becomes a larger component by a wide margin.
Edit-OIC! Yeah, that's a funny way to graph it but it allows people who don't have experience with graphs to see the breakdown and differences.
That being said, since IME, a lot of transport companies, such as LTLs, tend to run their trucks at less than 80,000lbs GCW, the point where aero drag is the same as rolling is probably ~30-40mph.