I installed VGs on my SuperCub. My testing didn't show much of an impact on stall speed, so much as it made a big improvement in aileron response at slow speed. However, a small impact on the stall speed may be all you need to make Light Sport numbers in a KR. VGs also have an impact on top speed as they generate some drag at cruise as well. But if your goal is to fly light sport with a KR, the impact to top speed shouldn't be much of a consideration and the VGs may get you down to the desired stall speeds.
The SuperCub guys have spent a lot of time experimenting with VGs. Some make fabulous claims about lower stall speeds. Others say it made no impact on the stall speed. The truth probably lies somewhere in between. However, all reported a significant improvement in slow flight handling characteristics. FWIW, on my SC, the VGs are installed the length of the wing, but much father forward in front of the ailerons than on rest of the wing. That keeps the flow attached at the aileron end longer and assures an inboard to outboard stall on the wing. Sounds like VGs are an idea that might be worth trying if you want to go light sport with you KR. -Jeff Scott Los Alamos, NM > Sent: Tuesday, November 25, 2014 at 7:53 AM > From: "Herbert F?rle via KRnet" <krnet at list.krnet.org> > To: "krnet at list.krnet.org" <krnet at list.krnet.org> > Subject: KR> Probably a simple way to lower the stallspeed > > http://www.youtube.com/watch?v=tYl2gLwLnwA > > I will do that on my Kr in the area of the alerons toward the wingtips and > probably on the bottom of the HS. > > Von meinem iPad gesendet
