Air Deflector, For my trailer |
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Air Deflector, For my trailer |
Randal |
Feb 27 2010, 12:28 PM
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#1
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Advanced Member Group: Members Posts: 4,446 Joined: 29-May 03 From: Los Altos, CA Member No.: 750 |
I just bought an air deflector that is 64" by 34" and will be bolting it to my trailer in front of the tire rack. You've seen these deflectors on big diesel trucks, kind of looks like a big snow board.
I might have to move the tire rack back 6 inches to get the rake I want, but here is my question? Is it better to mount it low or high? I can mount it on the trailer A frame, directly behind the triangle aluminum box, but I'd have to move the tire rack back at least 6". I can mount it next to the back lip (cover) of the aluminum box but will still have to move the tire rack. In any event, where will I get the best air flow to help mileage? |
URY914 |
Apr 10 2010, 04:48 PM
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#2
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I built the lightest 914 in the history of mankind. Group: Members Posts: 120,883 Joined: 3-February 03 From: Jacksonville, FL Member No.: 222 Region Association: None |
It gives the rig a clean look. That's what counts.
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blabla914 |
Jun 17 2010, 11:10 AM
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#3
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I like primer Group: Members Posts: 321 Joined: 1-March 04 From: Connecticut Member No.: 1,740 Region Association: None |
Thinking about what you said brought up an interesting idea. What makes the white fog like they use in wind tunnels to view air flow?
Have somebody video your rig driving in a light rain or just a wet road. The spray will show you a lot. Cheap and easy to do, but difficult to get the timing down. You have to have your rig all set to go and somebody lined up to video when it's raining. Naturally it can't be raining too hard as the rain will obscure what the spray is doing. I see a consistent 1-2 mpg gain on my crew cab gas chevy using a tonneau cover when I'm not pulling a trailer. I'm not sure it has the same effect dragging the trailer. I just haven't done enough driving with/without tonneau and the trailer. That said I have to agree, even your tires aren't that high relative to the top of the tail gate In the end, I have to agree....Most of the benefit will be keeping the crud off your car. Kelly |
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