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Vortex Generators, a how not to do it guide
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DAT



Joined: 24 Apr 2009
Posts: 20
Location: TN

PostPosted: Sat Apr 06, 2019 10:23 am    Post subject: Reply with quote

Does anyone know how far back from the leading edge of the wing my Micro Vgs need to be? I have an M 4 220C with the 30’8” wingspan. My kit has the tail placement tool but not the one for the wing.
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Maule M4 220C
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TimB
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Joined: 15 Nov 2009
Posts: 132

PostPosted: Sat Apr 06, 2019 3:52 pm    Post subject: Reply with quote

Read the STC Installation manual
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TimB
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Mog
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Joined: 26 Nov 2010
Posts: 619
Location: Dallas, TX

PostPosted: Sat Apr 06, 2019 4:25 pm    Post subject: Reply with quote

Yes, the manual very specifically tells you where to install the wing templates. I would read the manual front to back a few times before starting install.
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K.C.
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flyusn99



Joined: 09 Feb 2014
Posts: 74
Location: Juneau, Alaska

PostPosted: Sat Apr 06, 2019 8:25 pm    Post subject: Reply with quote

Read the manual and then realize the diagram is is a "Generic Maule Wing" meaning the outboard placement seam might not be where you think it is. If in doubt take a picture and have someone verify the proper placement of the templates BEFORE you start gluing.... Ask me how I know..... It seemed straight forward, so I thought...…

James
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crbnunit
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Joined: 18 Mar 2008
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Location: Alaska

PostPosted: Sun Apr 07, 2019 8:15 am    Post subject: Reply with quote

Love the music! Keep in mind the VG mounting is only as strong as your weakest paint layer...
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Maule over MI



Joined: 22 Jul 2017
Posts: 7
Location: Monroe, MI

PostPosted: Sun Apr 07, 2019 9:02 am    Post subject: Reply with quote

Bought my VG’s at Sun N Fun
Next weeks project Very Happy
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Terry Laurain
M4-220c
N40309
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DAT



Joined: 24 Apr 2009
Posts: 20
Location: TN

PostPosted: Mon Apr 08, 2019 6:43 am    Post subject: Reply with quote

Neither the manual nor the alignment tool were in the box. I contacted Micro and sent them the info they need to send me the manual and tool. Hopefully, the material they send me will answer my question. I've installed some vg's on a Kitfox but I had to calculate the distance from the leasing edge by using a measurement that was a percentage of the wing cord.

I appreciate the help.
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Mog
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Joined: 26 Nov 2010
Posts: 619
Location: Dallas, TX

PostPosted: Mon Apr 08, 2019 1:47 pm    Post subject: Reply with quote

Yeah, the Maule being certified has a very detailed set of instructions and exact placement of the VG’s. The Kitfox can be done several ways from what I understand.
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K.C.
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andy
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Joined: 06 Aug 2007
Posts: 1036
Location: Lake James, NC, USA

PostPosted: Tue Apr 09, 2019 1:15 am    Post subject: Reply with quote

I would think that removing the paint before gluing a vortex generator fin would be important to longevity, but I know that isn't easy. Mine were glued before the wings were painted and they've held very well over the last 9 years. If they're glued on top of a layer of paint, then the adhesion strength of the paint could be an issue, especially if it's old. What do others who have added them think?
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Andy
1986 MX7-180
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crbnunit
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Joined: 18 Mar 2008
Posts: 1770
Location: Alaska

PostPosted: Tue Apr 09, 2019 7:06 am    Post subject: Reply with quote

I have found a lot of VG's over the years, usually with a failed layer of paint still attached. They make great spares so thanks to everyone who loses them! Mine were installed on a bare wing and I have only lost one from the underside of the tail. The rock took some fabric with it and the new VG is attached to the patch...
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Njacko
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Joined: 19 Feb 2014
Posts: 170
Location: SW Scotland, UK

PostPosted: Thu Apr 11, 2019 11:27 am    Post subject: Reply with quote

I’ve stuck VGs on two Cessnas and a Maule in the past few years. All on top of the paint, and I never had one fall off. Maybe just lucky...
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