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Old 04-14-2013, 01:26 PM   #1
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Question Air Tabs...anyone?

I am thinking about looking into Airtab Industries Aerodynamic tabs. Anyone out there have any experience with this or know of anyone that does? If not, I am willing to research, buy, install and report the results.

Link: Aerodynamic Fuel Economy Savers for Road Vehicles
If you read anything at this site, the ExpediteNow PDF article explains the theory behind the system, mathmatically and in plain words. Makes very good sense to me as it jives with everything I know about submarine hydrodynamic flow vortices caused by hull appendages and how to mitigate them. The theory is the same the medium is different (water).

Interesting read. Just keeping the rear of the rig cleaner and reducing the air vortices would be worth it. Collision of Big Rig and RV rear vacuum wakes can almost be eliminated and the turbulance from being passed by 18 Wheelers. This adds to rig stability. That is if it works. The science behind it seems to make sense.
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Old 04-14-2013, 04:56 PM   #2
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Have you searched the forum? I thought I remember a reference to this 6 or so months ago...
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Old 04-14-2013, 05:06 PM   #3
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There was a post on this
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Old 04-14-2013, 05:25 PM   #4
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Yes. I read them, mostly everyone did a critique of gas mileage. From some of the research I did any gas mileage increase was marginally fractional. At that low a level it is statistically unprovable/insignificant. My main interest is stability and lessening of the crud effect at the coach rear. Most every blog I could find talked about those effects. Also most blog/comments were 2010 and before, I was hoping for something newer. I might just go ahead and do it then report results for everyone to consider. Cost is fairly small, might run a couple hundred.
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Old 04-14-2013, 05:55 PM   #5
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I put them on the back of my 08 Flagstaff 831RLSS up both sides and across the top. They did stabilize the trailer from semis & buses passing. How much it helped, I would say at least 75-80%. As for keeping the rear of the trailer cleaner, it helped but can't say for sure but it was noticeably cleaner on our trips to FL, IL, MO, AR and around. Gas mileage, couldn't tell any difference, but the stability was definitely better.
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Old 04-14-2013, 08:13 PM   #6
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Certainly is interesting. I would like to know how it comes out. I'm a project behind since I haven't ordered my LED lights yet, (but plan to soon).

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Old 04-14-2013, 08:23 PM   #7
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Pretty cool looking.
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Old 04-14-2013, 08:31 PM   #8
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Thank you for the feedback. My first priority is the stability, glad to hear you had a very noticeable result. From what I understand is that the devices elliminates or nearly so, the 'vacuum' wake at the rear of the unit. This vacuum is what sucks dirt and road spray into the unit. I will contact the company and set up a purchase.
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Old 04-14-2013, 08:35 PM   #9
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Quote:
Originally Posted by OldCoot View Post
I put them on the back of my 08 Flagstaff 831RLSS up both sides and across the top. They did stabilize the trailer from semis & buses passing. How much it helped, I would say at least 75-80%. As for keeping the rear of the trailer cleaner, it helped but can't say for sure but it was noticeably cleaner on our trips to FL, IL, MO, AR and around. Gas mileage, couldn't tell any difference, but the stability was definitely better.
Interesting. I gained 11' and 4-5000# with new TH,smaller,old one 22' didn't faze our f350 srw,but after a highway test next wknd,this may b very interesting.
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Old 04-14-2013, 10:17 PM   #10
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Pretty cool looking.
Sure made an interesting conversation pc at campgrounds too!
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