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? |
DanT |
Apr 9 2010, 10:36 PM
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#2
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Going back to the Dark Side! Group: Members Posts: 4,300 Joined: 4-October 04 From: Auburn, CA Member No.: 2,880 Region Association: None |
Randal, your tires on your tire rack give you more drag than the car does...IMHO
Once you move the air over the tires it should continue right over the car. Other than keeping rocks and debris off the front of your car, I doubt you will see much difference in MPGs...of your truck... and remember the air coming off the back of your truck with the tailgate up actually forms a vacuum in that area. |
Randal |
Apr 10 2010, 08:48 AM
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#3
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Advanced Member Group: Members Posts: 4,446 Joined: 29-May 03 From: Los Altos, CA Member No.: 750 |
Randal, your tires on your tire rack give you more drag than the car does...IMHO Once you move the air over the tires it should continue right over the car. Other than keeping rocks and debris off the front of your car, I doubt you will see much difference in MPGs...of your truck... and remember the air coming off the back of your truck with the tailgate up actually forms a vacuum in that area. I wonder how much the vacuum is reduced given that I have a complete cover over the bed of my truck? |
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