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Old 04-04-2012, 08:36 AM   #15
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Winnebago Owners Club
Join Date: Sep 2010
Posts: 153
Originally Posted by DriVer View Post
An air dam on the front of the vehicle creates a low pressure area under the front of the vehicle and cleans up the parasitic drag from much of the front suspension gear. I have one of those on my rig.

The mud flap located on the back of the rig downstream in the air flow will have negligible effect on aerodynamics of a large Class 6 self propelled RV.
Seeing as we are playing with a object that has the arodynamics of a large sheet of plywood, I'd like to offer a few thoughts.
A airdam on the front may affect cooling if a FRED. A large, full body width rear flap, may jam more fresh air to assist cooling of a rear engine rig.
Just things to ponder. lol

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