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Old 11-06-2014, 10:07 AM   #1
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airtabs

I was looking at the motorhome mag, and a article about airtabs and wanting to know if any one has used them?
www.airtab.com
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Old 11-06-2014, 10:21 AM   #2
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I installed them on a 2008 Flagstaff 831RLSS and noticed a marked improvement in the stability from semis passing. They are kind of pricey, but they do what they are advertised to do. I put them up both sides and across the roof.
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Old 11-06-2014, 10:28 AM   #3
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I saw that ad also but you would need to get them painted or they would really stick out and look ugly. Also, they say that you get a 2-5% fuel increase. If you get 10 mpg, for example, and a 3% gain in mileage, that would mean .3 mpg increase. Not sure what the tabs cost, but at .3mpg increase, I think you would need to do a lot of driving to break even.
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Old 11-06-2014, 10:41 AM   #4
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I know of very few mods done on rv's that give any return on the money invested. In fact, can't think of any.
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Old 11-06-2014, 02:31 PM   #5
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Don't buy into the hype. If these things really worked every 18 wheeler would have them. I travel a whole lot and have never seen these things on anything.

Not saying they are not out there, just saying I haven't seen any.
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Old 11-06-2014, 02:56 PM   #6
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I didn't buy them for fuel mileage, I bought them to reduce the backwash from semis AND THEY WORK!
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Old 11-06-2014, 03:28 PM   #7
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I bought them to reduce the backwash from semis AND THEY WORK!
I read something from another guy that has them who said the same thing plus the rear of his trailer is cleaner from lessened vacuum effect.

That would suck trying to draft you guys! (no pun intended)
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Old 11-06-2014, 05:10 PM   #8
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that is what iam after, the handling, don't care about the MPG
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Old 11-06-2014, 05:27 PM   #9
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Oldcoot how are these attached? stick-on or screwed?
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Old 11-06-2014, 05:57 PM   #10
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I don't care what you say - those things are butt ugly.....


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Old 11-06-2014, 06:00 PM   #11
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Oldcoot how are these attached? stick-on or screwed?
They are stick on.
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Old 11-06-2014, 06:01 PM   #12
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I don't care what you say - those things are butt ugly...
Don't recall reading anywhere proclaiming they were pretty, just functional.
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Old 11-06-2014, 06:04 PM   #13
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Just making an observation - it's still ok to do that isn't it.... If they're what you need so be it....


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Old 11-06-2014, 06:08 PM   #14
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I installed them on a 2008 Flagstaff 831RLSS and noticed a marked improvement in the stability from semis passing. They are kind of pricey, but they do what they are advertised to do. I put them up both sides and across the roof.

So....does your current rig have them or why not if they were so great on the 2008 ????
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Old 11-06-2014, 06:10 PM   #15
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Do they have any windtunnel test data to back up their claims? Almost look like some sort of drag inducing device?
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Old 11-06-2014, 06:10 PM   #16
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I am pulling a billboard and all of my towing is on the interstate and semi's don't push me around. Guess it is the heavy truck.
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Old 11-06-2014, 06:24 PM   #17
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So....does your current rig have them or why not if they were so great on the 2008 ????
Not on the 5er, because there is a world of difference between the tongue trailer and the 5er. If we had bought another tt, I would have put them on it.
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Old 11-08-2014, 03:14 PM   #18
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Don't buy into the hype. If these things really worked every 18 wheeler would have them. I travel a whole lot and have never seen these things on anything.

Not saying they are not out there, just saying I haven't seen any.
Cajun, what do you think those "wings" on the bottom of 53 foot trailers hanging almost to the ground are for?? Yep, fuel economy. Same way with those weird looking "contraptions" on the REAR of some trailers.

'twouldn't surprise me a bit to find that airtabs might help quite a bit.

Boowho??
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Old 11-08-2014, 03:18 PM   #19
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Do they have any windtunnel test data to back up their claims? Almost look like some sort of drag inducing device?
Aerodynamics can be a strange thing.... Don't know about these things, but I can tell you that the big truck outfits wouldn't put all that crap on their rigs if it didn't help. It's all about return on investment.

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Old 11-08-2014, 03:26 PM   #20
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Cajun, what do you think those "wings" on the bottom of 53 foot trailers hanging almost to the ground are for?? Yep, fuel economy. Same way with those weird looking "contraptions" on the REAR of some trailers.

'twouldn't surprise me a bit to find that airtabs might help quite a bit.

Boowho??
These are two entirely different concepts, completely.
The skirts under the trailers help reduce drag by keeping a lot of air out from under it, the panels at the back enhance the airs ability to easily glide past the trailer instead of creating turbulence and drag.

The items that the OP has shown will do neither, they will induce drag, which helps to stabilize the trailer, in theory... this is all very basic aerodynamics, nothing magical or mysterious about it.
Would still like to see some test results...
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