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Home>Aircraft Using Stolspeed Vortex Generators>Kolb

 Kolb Firestar

Purchased some of your VG's a few months back, got them installed last week. Stall speed dropped 5 mph indicated, handling just above the stall is very good, stalls are very gentle. Well satisfied.
 
The aircraft had previously been flying with home made VG's on it, and it is certainly much simpler to simply send you a credit card number and stick yours on. Performance is about the same, with about 20% less time and fiddling around, plus the bonus of not having to worry about slicing a finger when washing the wings...
 
 Here is the web page with the before and after pictures, perhaps you can use it.
 
Richard
 
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 I installed your VGs on my Kolb Firestar and couldn't be happier ! 
Dropped the stall speed 5-6 mph and really improved slow flight. 
Thanks for a great product.

Danny
South Carolina

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Kolb Mk3

 I added the Stolspeed v.g.'s on my Xtra (912 100 HP with Warp Drive 3-blade prop) last September. Placement per Stolspeed's recomendation except that I used the 60mm spacing from O.B to I.B. of the wing. Also centered the pair of V.G.'s in each valley between the ribs. I also added v.g.'s to the underside of the horizontal stabilizer. 
The stall speed went from 40 indicated to 32 indicated and about 30 indicated with 20 degrees of flaps. I have 14 landings with the v.g.'s and they have been the best by far. It seems I have much more time to get the plane down to just a few inches above the runway than before. It also seems the pitch control is much more stable. Before I was always overcontroling up and down after the round out. That hasn't happened with the v.g.'s. 
 I'm very happy with them and have no regrets. I wish I had put them on sooner.
Rex

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