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Old 02-06-2012, 08:00 PM   #1
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Roof Air Deflectors

How many of you use a Roof Air Deflector ?

Similar to this http://www.campingworld.com/shopping...eflector/34579

Been thinking of getting one. Is it really worth it ? Big difference on the wind drag?
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Old 02-06-2012, 08:23 PM   #2
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I don't use one, but looked into them a few years back. The info I ran across stated that in order for them to make a notable difference the deflector had to be big enough to deflect the air above the TT and around the sides of the TT.

Bob
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Old 02-06-2012, 09:33 PM   #3
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Save your money and time.

I tried towing thousands of miles with and with an air deflector.

I found only marginal improvements in fuel economy. Not enough to justify the cost of the equipemnt and the time to put it on and take it off.
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Daingerfield State Park site #3.jpg   Wind Deflector.jpg  
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Old 02-06-2012, 10:51 PM   #4
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The pay back is somewhere around a half a million miles. The one in the picture wouldn't do a thing unless the truck had a topper and the wing mounted on that.
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Old 02-07-2012, 07:26 AM   #5
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Thanks guys ! So in other words it's not worth it.

If I find one used and a good deal, i might consider it.
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Old 02-07-2012, 10:44 AM   #6
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Yep the payback on those is way too long.... and if you dont drop it every time you unhook then you are loosing mpg solo...
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Old 02-07-2012, 10:46 AM   #7
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Oh and that tailgate drag thing they mention while solo is bolderdash... USC used a wind tunnel to prove that an air bubble forms in the back of a pickup when solo with the tailgate up and you get better mileage with it than with the TG down.
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Old 02-07-2012, 11:35 AM   #8
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Seann45, I also saw this done on MythBusters. They said the same thing. It actually creates more drag on the bed of your truck if you leave the tailgate down. With it up it does create a "vortex" of air that keeps spinning and helps to deflect air over the tailgate. Gotta love MythBusters!
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Old 02-07-2012, 11:35 AM   #9
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We had an air deflector on a previous tv- Didn't seem to help fuel use, but did keep most of the bugs off the front cap of the fiver- JMHO- Don
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Old 02-07-2012, 12:48 PM   #10
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Quote:
Originally Posted by Diesel Donnie View Post
We had an air deflector on a previous tv- Didn't seem to help fuel use, but did keep most of the bugs off the front cap of the fiver- JMHO- ...
Yes, it sure does reduce the bugs on the front cap.
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