Glastar Vortex Generator Kit
On the GLASTAR our VG Kit gave these results:
Stall clean before VGs 49 kias; after VGs 46 kias
Stall 20 degrees flap before VGs 46 kts; after VGs 42 kias
Stall 40 degrees flap before VGs 40 kts; after VGs less than 36 kts
Top speed stayed the same. Lift off on the take off roll is 41 kias.
Installing vortex generators on the bottom of the horizontal gave the elevator more authority at low speeds.