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VG's may going to hurt your MPG either way so you may have to make up for it in other ways if you want a net gain in FE. I understand the need for stability, though. Do what you need to.
A deflector should help you in the FE department, but gap fillers would add to that- make it more effective. If you really want to get some MPG go for the low-hanging fruit of the boat tail. It's well documented that boat tails on cars can improve aero by 20-30% and MPG, respectively, by 10-15%. A 5th wheel has a lot more to gain, so with a fully streamlined setup you might see better than that on flat ground.
(For gap fillers, check out Aerohead's posts about his streamlined trailer behind the T-100. The posts may be spread out in several threads but the info is there.)
I haven't streamlined a trailer though, so go by what you read in the links. If one of those approaches suits you, go for it!
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He gave me a dollar. A blood-soaked dollar.
I cannot get the spot out but it's okay; It still works in the store
Last edited by Sven7; 08-19-2012 at 04:06 PM..
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