Watch a video of Stolspeed VGs in action on a 601 HD(UL) wing at
http://www.youtube.com/watch?v=2CmNhvT7LyE
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Zenith 601 HD
I owned our Zodiac 601 UL TD three and a half years and I should have put VG's on it 4 years ago, the plane weighs 550 lb empty but was alway's flying nose, high not any more
I put the feathers as per instructions on the wings and also put two on each side facing slightly down 2 inch above the wing on near the leading edge and one were the fuselage bends inward .
then I also put 14 vg.s on top of the canopy to keep the air attached to it and not become turbulent
10 MPH drop in stall speed is a lot . now every landing is tail wheel first. and the plane just fly's like on rails.
Thanks for a great product
Ron, British Columbia, Canada C-NFSR
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Placing Stolspeed VGs on the 601HD(UL) wing
Place the front tips of the VGs along a line 310mm in front of the main rivet line on the top of the spar.
Spacing: From the wingtip first 15 VGs 60mm, the rest 90mm.