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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