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Old 02-19-2012, 01:02 AM   #47 (permalink)
skyking
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Join Date: Apr 2011
Location: Tacoma WA
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Woody - '96 Dodge Ram 2500 SLT
Team Cummins
90 day: 23.82 mpg (US)

Avion and Woody - '96 Dodge/Avion Ram 2500/5th wheel combo
90 day: 15.1 mpg (US)

TD eye eye eye - '03 Volkswagen Beetle GLS
90 day: 49.05 mpg (US)

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Quote:
Originally Posted by ERTW View Post
Your coefficient drops 68% and your frontal area increases how much? Still, Adding a trailer and coming out par is pretty amazing.
I think Phil was talking about the reduction that the template makes on a given frontal area, not in comparison to the truck without trailer.
The truck is ~34.5 ft and 0.44 cd, Cda of 15.18.
The trailer is at ~53 ft.
To get to an equal Cda, The assembly would have to get to a cd of 0.286.
The bulk of the truck's cd issues are the square back of cab and then tailgate.


I suspect that I will get a cd considerably lower than 0.286 with a little modeling help
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2007 Dodge Ram 3500 SRW 4x4 with 6MT
2003 TDI Beetle
2002 TDI Beetle

currently parked - 1996 Dodge 2500 Cummins Turbodiesel
Custom cab, auto, 3.55 gears
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