Stewart, I expected that type of answer from you. You don't have anywhere the knowledge of aerodynamics that you think you have. And you appear to be too stubborn to learn. Years ago I earned my living experimenting in aviation aerodynamics. Sometimes I wish I never tried to help you.It's ironic that you challenge others to install and test when you haven't done so. VGs aren't about stall speed to me. They lower the speed at which I fly familiar attitudes at typical pattern speeds. And as for rudder? My Cessna rudder has VGs, too.
You should try them.
On the Cub? When I asked Jerry Burr where I should place VGs so they'd best compliment my slats? He told me I had it backwards. Slats energize the VGs. I'm always open to learning from guys who know. What I know? My wing works very well.
Thank you for your kind compliment Kevin.Pete, I wish I was closer so I could come by for and educational coffee once a week;-) I’m always impressed with the thought that goes into your posts.
Is the outside portion of the VG and Pstol equipped cub wing still benefiting from the energized airflow from the outer VGs at a high AOA?
Stewart, I expected that type of answer from you. You don't have anywhere the knowledge of aerodynamics that you think you have. And you appear to be too stubborn to learn. Years ago I earned my living experimenting in aviation aerodynamics. Sometimes I wish I never tried to help you.
.... I did not and will not put Vgs on my 185 because with the wing extensions and drooping ailerons the stall speed is so low that I have run out of rudder on take off. If there were Vgs reducing the stall speed further, the rudder would run out of authority more often.
hotrod, What I did not mention is that condition presented itself during a high wind very rough water take off. In those conditions I use 40 degrees of flap to reduce the pounding impact loads on the entire airframe by transferring as much of the weight as possible to the wings sooner during acceleration. That works for me. Vgs on the vertical stab would not have helped in that situation as the tail was blanked by the flaps and not by the rudder stalling. As soon as the flaps were retracted, rudder authority returned.This comment caught my eye.
My take is that the VG's are supposed to improve control authority,
and any reduction in stall speed is kind of a bonus.
Good thread on that subject. https://www.supercub.org/forum/showthread.php?53721-Vgs-vs-sportsmanAnybody running VGs with Sportsmans..... I have the Sportsmans with standard wings and debating VGs, I don't like the thought of wing covers and VGs.
Put some ballast in the tail. It will do a lot better when the CG is correct without any modifications.Good thread on that subject. https://www.supercub.org/forum/showthread.php?53721-Vgs-vs-sportsman
Thinking of doing the same. 1954 Pponked with high compression pistons, tuned exhaust and fuel injected. Light weight rocket ship but heavy in the nose with that three blade prop. Wondering if the Micro VG's would give me a little better response in the rudder and elevators????