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Old 03-19-2018, 06:42 PM
Michaelpk3 Michaelpk3 is offline
Join Date: Dec 2016
Location: Sarasota, FL
Posts: 89
Default Micro VG installation

Thinking of pulling the trigger on some micro VGs

$400 and seems like cheap safety insurance.

Anyone have these installed? Pros/Cons?
Michael Kalfsbeck
N505AT RV-7A based in Sarasota, FL
Donation gladly paid!
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Old 03-19-2018, 06:54 PM
DaveO DaveO is offline
Join Date: Dec 2012
Location: Greenfield, IN
Posts: 284

I put them on my 7A and saw very little difference in stall speed. I would not do it again.
They were not a negative, only money spent that was a waste.

RV-7A N1243A Sold
#140479 RV-14A N1479B Reserved
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Old 03-19-2018, 07:00 PM
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Dbro172 Dbro172 is offline
Join Date: Apr 2012
Location: West Fargo, ND
Posts: 1,043

I dont know what the bugs are like down in FLA but I would not want to clean around VGs up here. A wipe down of the wings is a standard post flight routine here in the summer months. From the research ive Done I have not found them to be real noticeable, like on a skywagon, Maule or supercub...
Derek Hoeschen
EAA Tech Counselor
RV-9A #92103 - N803DK
G3X, Superior XO-320, Dual Pmags, Catto 3B

RV-8 #83565 - N184DK - building
1968 Mooney M20C - Sold
1956 C-182 - Sold
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Old 03-19-2018, 07:13 PM
Gisnar Gisnar is offline
Join Date: Nov 2012
Location: Northern Nevada
Posts: 129

Put on my Longeze, 8% decrease in stall, no change top end. Would do again, easy to install
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Old 03-19-2018, 07:18 PM
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N941WR N941WR is online now
Join Date: Jan 2005
Location: SC
Posts: 11,807

If you want to lower your stall speed, sell the -7A and turn the cash into -9A.
Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
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Old 03-19-2018, 07:21 PM
Michaelpk3 Michaelpk3 is offline
Join Date: Dec 2016
Location: Sarasota, FL
Posts: 89

Maybe I can just glue $20 bills on top of the wings instead...
Michael Kalfsbeck
N505AT RV-7A based in Sarasota, FL
Donation gladly paid!
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Old 03-19-2018, 07:47 PM
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humptybump humptybump is offline
Join Date: Feb 2011
Location: Eastern Shore of Virginia
Posts: 3,087

The builder of my RV-8 installed VGs, tested, and decided to remove them. He then installed the wing root strakes (which are still installed).
- Glen, ESVA
RV-8 FP IFR | Track my RV-8 | 53VG
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Old 03-19-2018, 10:55 PM
Join Date: Mar 2008
Location: Seattle
Posts: 1,374

You can make your own vortex generators and install them with double sticky carpet tape. I made 4 "Hall" type V-Gs and put them in front of the ailerons (2 ea) on my T-18. It had a profound effect on aileron control in stalls. They did not effect stall speed or top speed (that I could tell) but I didn't expect them to.
My RV-8 does not have V-Gs nor strakes. I did compete one season in IAC aerobatics, Sportsman Class. I don't see a need for them on the -8.
I don't see a down side, except washing the wing or snagging a finger.
VG's are fun to play with, then you can take them off and say "Been There Done That".
Might be a different story on a different aircraft type.
Scott Emery
EAA 668340, chapter 326 & IAC chapter 67
RV-8 N89SE first flight 12/26/2013
Yak55M, and the wife has an RV-4
There is nothing-absolute nothing-half so much worth doing as simply messing around with Aeroplanes
(with apologies to Ratty)

Last edited by SHIPCHIEF : 03-19-2018 at 10:59 PM.
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Old 03-19-2018, 11:11 PM
Gt-401 Gt-401 is offline
Join Date: Oct 2012
Location: Wray CO
Posts: 75
Default Rocket VG's

I have them on my Harmon Rocket, and like them. I bought the plane that way, so I can't tell you what a difference they made in that plane, but I can tell you that I can easily land the heavier shorter wing rocket shorter than the RV-4 I owned before it that didn't have the VG's.

The builder says that the VG's also dampen out the tail waggle that happens in turbulence, and the Rocket is more stable in yaw than the RV-4. Is it because of the VG's? Don't know, but I'm not taking them off.
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Old 03-20-2018, 10:27 AM
seward747 seward747 is offline
Join Date: Jan 2005
Posts: 147

Results seem to vary with aircraft, and especially installation location.
MicroAero does rather extensive testing for certified aircraft applications, here in the experimental world, it might take several positioning iterations to achieve meaningful results. I've got them on my Luscombe, where they reduced my indicated stall speed about 10%; reduced my approach speed accordingly.
Very popular on twins, where they reduce Vmc, and often allow a gross weight increase. Standard equipment, I believe, on the Piper M-series (Meridian/Mirage/Malibu).
I plan to install them on my RV-4 project.

Seattle area
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