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Old 07-18-2008, 07:16 PM   #21 (permalink)
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Quote:
Originally Posted by cfg83 View Post
Ahhh, I can't prove a thing, . Look at azraelswrd's post because it is helpful regarding how to do a coast-down test. My problem is, there is *no* place I can think of in LA to do this test. Because I don't have a "boxy" car like a Scion xB or a Jeep, I can't even perceive any road-stability benefit. If I could perceive increased road stability in a cross-wind, that would imply aero-improvement to me. Here is what they look like (I still need to add some below the window, just lazy as usual) :
How clean/dirty is your rear window? Any differences before and after using the Airtabs? From the website and testimonials, driving at highway speeds should reduce the amount of water/dirt/splash on the areas behind the tabs compared to those without tabs.

I'll add this to my list of future mods to test

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Old 07-18-2008, 07:38 PM   #22 (permalink)
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azraelswrd -

Quote:
Originally Posted by azraelswrd View Post
How clean/dirty is your rear window? Any differences before and after using the Airtabs? From the website and testimonials, driving at highway speeds should reduce the amount of water/dirt/splash on the areas behind the tabs compared to those without tabs.

I'll add this to my list of future mods to test
Hmmmmm, since I can remove the ones on my roof, I should be able to do the following test :

1 - Temporarily disconnect the rear wiper motor so that it doesn't clean the window.
2 - Drive at highway speeds without airtabs on roof.
3 - Turn on wiper so that cleaning fluid squirts out.
4 - Observe effect.
5 - Clean off window.
6 - Add Airtabs.
7 - Repeat steps 2, 3, and 4.

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Old 07-18-2008, 08:51 PM   #23 (permalink)
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Cool plan cfg. Didn't want to go tuft?

Oh, I finally stopped lurking and joined gassavers.org and found a thread dealing with VGs and testing with them, confirming positive results from homemade and prefab'd VG's (like AirTab)

Air Dam and Vortec Generators
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Old 07-18-2008, 08:59 PM   #24 (permalink)
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Quote:
Originally Posted by azraelswrd View Post
Cool plan cfg. Didn't want to go tuft?

Oh, I finally stopped lurking and joined gassavers.org and found a thread dealing with VGs and testing with them, confirming positive results from homemade and prefab'd VG's (like AirTab)

Air Dam and Vortec Generators
Oh, I could try tuft instead. Thanks for pointing that out.

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Old 07-18-2008, 11:43 PM   #25 (permalink)
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Hey,

They make you sign up in order to see the pictures... :-(
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Old 07-19-2008, 12:12 AM   #26 (permalink)
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Yeah, that's why I stopped being a lurker and signed up.
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Old 07-21-2008, 11:27 PM   #27 (permalink)
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Quote:
Originally Posted by MazdaMatt View Post
I've seen a few threads about these, but nobody seems to want to run a test.
Tested: vortex generators (AirTabs) on a Toyota Corolla


A-B-A test, no significant difference observed.
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Old 07-21-2008, 11:50 PM   #28 (permalink)
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Hi,

I got confirmation on my order for 21 AirTabs. (They charged me less for shipping than they had estimated!) I'm planning on using 9 (or 8) on the roof, and 6 on each side. So, hopefully they'll yield some noticeable improvement?

I'm thinking of putting them in a very shallow vee on the roof, with the point slightly behind the leading ends -- I'm trying to picture how best to get the air to fill in behind the truncated hatch on the xA...
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Old 07-23-2008, 11:28 PM   #29 (permalink)
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Hi y'all,

My AirTabs came today, and I even managed to stick (most) of the m on. They are much lighter weight than I was expecting -- they are "hollow" ABS. Also, they are pretty stiff, so they must be applied to a near-flat surface. I drive with them a bit tomorrow, and I'll need to fill up soon, so I'll see how the next tankful comes out...

Oh, that's right -- I pick up a sheet of Coroplast tomorrow, if it comes in.
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Old 07-23-2008, 11:36 PM   #30 (permalink)
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Cool. Can't wait to hear how they work for you. Tomorrow I was going to test how a lower grill block affects the temps, especially when ambient air gets into the 100s.

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