Mark Patey flight testing VGs (Vortex Generators) on a Wag Aero Super Cub 

Gday Mark, I'm John Gilpin. I made those Stolspeed VGs that you're using. A friend just alerted me to this video, so it certainly wasn't solicited. Very well done Mark, very solid analysis and really excellent presentation. Thank you for your encouraging comments. Enjoy your Stolspeed VGs for some real bush flying! JG

That's definitely an impressive difference! I'm constantly blown away by the level of expertise and professionalism that all of the Flying Cowboys show in these videos. On top of that, the family atmosphere that you guys convey between fellow aviators is very refreshing when compared to other "entertainment" and media that is out there. Even more impressive is the love and respect that the whole Patey family shows towards one another! No need to look to elected officials, actors, athletes, or (typical) big business owners for role models; just jump on RU-vid and pick any video with a Patey in it and you'll find a great example to follow. Thanks to you and all of your family for being so uplifting and encouraging- it truly is refreshing to see what a good family dynamic is supposed to look like!

I'm a simple man. I see a Patey video and I like it.

Those VGs are working extra great, considering that wearing a tie in a backcountry plane increases your stall speed by at least 5kts..! ;D

I'm really impressed at the stalled turns. Most planes will spin if you do that to them but that cub just happily sat there and gently sank.

What I noticed, after putting VG's on my plane, was similar to your results as it relates to slow flight and stall. It was coming in and actually landing that presented a problem. Although the wing allowed me to fly slower and stall slower, the first time I came in to land at the slower speed, I realized I didn't have enough elevator authority to be able to flare. Looking around, I noticed the carbon cubs I looked at all had a gap seal between the horizontal stabilizer and the elevator, so I took some hundred mile an hour tape and gave it a whirl. The gap seal put the flare back into the elevator at the slower speeds. After testing, I removed the tape and made it permanent. That gap seal made the slower flight of the VG's usable for me in all aspects of flight. I don't know if that was unique to my plane or if it makes a difference on all planes. If you feel like you lack elevator authority, you might want to give it a try.

Look at Mark in full style while playing with some VGs. Great video Mark!

We put VGs on our Rans S-12 and it made a HUGE difference! We put them on the wings and the entire tail including rudder and elevator (top side) not bottom as I think I heard you say. The S-12 is notorious for being mushy at slow speed but this took all of that out. On the first test I was taxying down a pretty rough grass strip so taxying nose off and noticed it got really smooth at normal taxy speed. When I looked down I was actually off the ground. I wont own another airplane without them. I am 100 percent sure if you fix up your tail with them you will find your elevator and rudder authority will be not only increased but multiplied. Blue skies bro!

That is very interesting Mark. What people don't understand is that 5 mph drop in speed, drops the the kinetic energy of the aircraft by roughly 40%. The aircraft design I'm working on is all about a safer STOL airplane so the pilot has a larger margin of safety at low airspeed. But still keep it simple and guick to scratch build.

you are are a refreshing breath of air after your brothers hyperactive antics :P . . . . . . . . .. .. . . . just playing good stuff

Tell Mike to get another scrappy vid out I'm jones n Love both you guys. love love love is what i got

Mark, it’s great to see you putting out content here. Excellent content with through examination of your process. Please follow up with the elevator VG’s after attaching. Also I think you may have a new engineered project for a fuel can that doesn’t leak while fueling. If you can manage this one, man could you take the market by storm!!! Fly safe Mark... fly often!! Cheers

I learned a lot in 25 minutes, thank you. Air is amazing. From the crazy layered front wings on modern F1 cars to those tiny vortex generators making a huge difference in aircraft control ability there is much to learn about air.

Over the top and didn't stall. Mark that was awesome and from the heart. Not only impeccable but extremely entertaining. Kudos.

Had me sold on them when you start talking about the faster roll rate while being pushed around by a wind gust!!

The installation of the VG's is a very good thing to do - almost essential by my observation. Thanks for sharing the event with us, Mark. Stay safe and do the flying I would love to be able to do.

I haven't told my kids (9 year old twins) yet that you and Mike are different people... but the family loves your videos! Trying to install a love of aviation in my little ones.

Mr. Mike I think you have opened a lot of eyes to VGs, Great video as always. Thank You....

FANTASTIC INFORMATIONAL VIDEO!!! THANKS MARK!!!! PLEASE UPLOAD MORE OFTEN. 😉👍🏼

JG back again. I just watched that video again, and I do have to comment. If a X-wind lifts a wing when your hanging in there slow, please don't throw the stick over, STOMP ON THE RUDDER instead..... The wing is already at a high AofA and throwing the downwind side aileron even more downward is liable to cause it to stall and loose lift and increase drag that side and drop that side wing, raising the wind side wing even more and suddenly it's all over. Seen it happen all to many times......

We had VGs installed on our S model Bonanza several years ago. The cruise speed was not changed at all but at slow speed, WOW, the plane became very stable. Control on final was extremely improved. Best improvement we made in the 25 years we have flown our beautiful V Tail.

That mod appears to be a must for every aircraft. That was really most interesting. Thanks.

Awesome Mark! Anything that makes such an effect that you need to re calibrate the A.O.A. Warnings is absolutely amazing!👍

Great video a lot of information ! I fly RC but love all the videos about building and modifying things.

love the flight testing in the business attire. thanks for putting out content that even us non fliers can enjoy

Double the Patey's ought to be double the videos! Keep 'em coming! Tell your brother we are gonna need a Scrappy update, or I might have to show up in person. :)

So looking forward to Scrappy's wings with VGs installed. Great VG explanation. Thanks.

Hi Mark, Thanks for doing this research. I have always wondered about how much improvement would be gained by using VGs. Real data helps tremendously! That 3m adhesive is strong, I have used it in other applications and if the prep was done right it will really stick well.

Wow. For the cost it’s a no brained. Thanks for doing the research Mark. You da man.

Fascinating video and results, Mark. Thanks so much for sharing. It's all good knowing the theory, but witnessing the difference in practical application is really valuable. I'm sure I'm like others...if you do VGs on the elevators, I'd be VERY interested to see that before/after, too. 😉 Thanks again! 🙂

Great video! I had similar amazing results on my J3 Cub with an STC set of VGs from MicroAerodynamics. Power on stall speed went from 39 mph to about 29 mph. Had to learn that my Cub will not produce enough lift for straight and level flight below 40mph so slow approaches require throttle to arrest the descent instead of flare alone. Yes, it has VGs on the horizontal stab underside. Made it a different airplane! FWIW, I am about ready to buy all new gas can spouts. Tired of leaking cans while refueling.

Made some out of a plastic orange juice container for my RC bush plane and they completely eliminated tip stalls at low speeds, landing speeds are significantly slower and more stable too.

Thanks Mike for doing this video. I’m just completing the restoration on my 46 7AC Champ and installed VG’s I’m excited to see if my plane responds as yours did. Now I know what to anticipate. Thanks for taking the guesswork out for me. Fly safe.

I guess, now it’s a matter of the best shaped VG’s and exactly, EXACTLY the best place for each ac.

Really interesting thank you. You mentioned possibly putting VGs under the horizontal stabiliser to try to get its stall speed down - that would be a really cool followup.

Great video.... now I really need to look at VG's for my Cherokee... Art Mathison has good ones but can not find them for sale... may need to go with the Micro VG's.... and new wing tips... this winter!!...

Thanks Mark, great report. Keep up the great work !

Your right it's a flying cowboy Christmas! 3 months in a row a Mark Patey video!

VG’s are such a cool invention in technology!!!

Excellent analysis. Very scientifically presented so we may take useful data away. Important to reverify in your own application and document.

Ah, very nice, the Bob Hoover shirt and tie look

Thanks for posting this. I learned something new.

Nice test and presentation. Now I need to buy a plane to put my vgs on...

thanks Mark, I just bought my VG from Annie @ Micro Aero Dynamics.....I like a kid waiting for Santa to arrive!!

Great video, I'm stoked to see me some Mike P......

Thanks for the video! I'll definitely buy those for my airplane in the future!

The "moose hunter stall" is cross controlled so when the stall breaks the plane snap rolls to the other side into an almost inverted stall/spin. The only way to recover from it at low altitude is not to let it happen. To me the safety aspect of having vgs on the wing and strakes in my case on the tail is the continued aileron and elevator control, thus airplane control, at really slow airspeeds. The two mods I recommend for cubs are vortex generators and F Attle Dodges defroster kit. You might not need the defroster kit in your area, but it changes the flow of the heater output so it doesn't burn your shoes.

Nice video and report Mark!

Very impressed, but more impress by a guy in a white shirt and tie flying a cub! Strange not someone with a plaid shirt.

I love planes and you know your stuff

Thank you Mark. Excellent video. Thank you for sharing.

Love your tie Mark !!! That's The only uniform to do test flight 🤣🤣🤣

What a great video! Super fun and informative. Way to keep the stoke on. Looking forward to more!

Best dressed test pilot on You Tube :D This was a great test!

You've set the standard - Business dress now. No more dirty T shirts on your brother's videos

I fitted them to my 701 after removing the fixed slats. Better top speed and slower more controlled low speed. Best thing ever.

Good video Mr. Mark . I'm impressed with your thoroughness .

16% more speed is 35% more energy, so pretty significant. It also means around 33% more stopping distance. Losing that much landing roll is a big deal. Nice.

GREAT TUTORIAL, THANKS A BUNCH OLE BUDDY!!!

$600.00 for my PA -12. Bottom end on my airspeed indicator is 40 mph. No indicated airspeed at full flaps, no power, it wouldn’t break without a hard pull back. Totally predictable. Well worth the money. Great video.

On my 172 I noticed the vg's gave a smoother ride in rough air. Others have told me the same thing.

All ways wondered if they made a measurable difference, wow it's significant. Test then verify the only way.

Interesting. I'm not a pilot. And now I think I quit my flying lessons because the 152 I was training in, didn't have the VG's, and I scared myself so bad in the turning stall. I never soloed. It's interesting to watch and ride along with you and others.

It's 2020, and you're just joining the VG party?! I put Micro Aerodynamics VG's on my Rans S-7 20+ years ago. Seriously, I thought their benefits were so well known by now, as to be yesterday's news.

Wow!! Mark was wearing a tie!!!!!! Great video as usual:)

Bring on more videos!

Thanks, totally convinced. I have to add them to my Bearhawk.

$96 is not bad at all, CubCrafters sell VGs for $1500! That's the beauty of experimental, you're not paying for the STC.

Enjoyed your video Mark

Cool. This reminds me of the bumps on whale fins leading edge which supposedly function the same way as the vertex generators.

If he had just had a pocket protector it would have been official !

Flying Bob Hoover style with the tie .

Very cool video Mark. Its a pity you didn't have footage on how exactly you marked the wing up to determine where that 7% of chord actually is. I cant find a video on RU-vid that shows exactly how to do that. Great test and cant wait to get mine on my plane. Thanks bud.

Nice! I thought the VGS would have been bigger than what they were but they work!

Sold! Just Subscribed you have a viewer for life! Great job with the video and why the airline tie?

VGs do more than lower stall speed, they increase aileron authority at slow speeds. As far as Maule’s go, it is a huge increase in authority. Stall speed was low enough to start.

Love your videos. Great job. Also like the cowboy hat. Kool. Thanks for testing videos.

Looking pretty snazzy in that tie Mr Patey!

Excellent presentation.

What an amazing coincidence - I also wear my tie and shirt when I test VG's! I wonder if the fuel soaking of the wing surface has an effect, hmmm? Very cool vid, I would like to see a view of the instruments during the test

Nice testing. Thanks for this vid!

If you fit the ones under the tail I have found power off stall and landing speed reduced significantly with more elevator orthority.

I debated whether or not to paint my StolSpeed VG's, but found that the VG's translucent material more or less "blends" with the paint on the wing and looks good unpainted.

Nice that you should put the shirt and tie on for us Mark. It looked a little warm for the waistcoat.

Great thanks for the ride DUNEDIN FL

I installed VGs on my radio controlled model 1/4 scale STOL Super Cub and and now it is transformed into STOL on steroids.

Your best video.....keep them coming......

Nothing like a tie to make the gas up better.

Fascinating Mark (give Mike a nudge - seems ages since he posted a video!). Seems these devices are pretty usefully effective.

You look like a real life corporate pilot with that shirt and tie on...hahaha. Well done sir keep up the great videos!

I put them on my Wag-a-bond. Huge difference, especially because the plane has no flaps.

Hope I spell this right, over 45yrs ago "Jedowsky top wing turbulance" was used in model gliders, 1970`s

Watch out Mike'Donalds - Mark in the Box is on your tail.... Nice tie!

I’m sure your wife thinks your handsome but could you have turned the camera around so we could see what was going on? Thanks for bringing us along mark I always enjoy your videos and am amazed at your ability to design and build such nice airplanes

Very nice video, thank you.

Certified runs $1500 for aluminum vg's..... gonna do it one of these days, takes 10 mph off the Mooney's touchdown speed let alone the improved stability in the pattern where most accidents happen.

What I found really impressive is your outfit of the day! 😂 Merica!

Very interesting, thanks!

I think most C-5 and KC-130 pilots would feel extremely nervous flying at 30mph.😳. I guess I can understand - their VR is greater than your Vmax.

I had a friend that did flight testing during VG project. With only one wings VGs installed he found that the stall was straight ahead.