Duo Discus wing root mod

[JS[_5_]]

Does anyone have a wing root mod for the Duo?
That sharp 90 degree junction on the underside of the wing is right out of the 1970s.
Contacted the usual suspects:
Streifeneder.
US S-H rep.
Lindner.
....With no luck.
Where's Rick Wagner when you need him?
Thanks!
Jim

[krasw]

On Wednesday, September 25, 2019 at 5:59:46 AM UTC+3, JS wrote:
> Does anyone have a wing root mod for the Duo?
> That sharp 90 degree junction on the underside of the wing is right out of the 1970s.
> Contacted the usual suspects:
> Streifeneder.
> US S-H rep.
> Lindner.
> ...With no luck.
> Where's Rick Wagner when you need him?
> Thanks!
> Jim

I can only imagine the conversation Schempp has had:

Young engineer: "All our competitors have hi-tech CFD wing-fuselage junctions, ours so prehistoric you cannot even seal it with tape. Would it be time to do something about it?"

Tilo: "Nein"

[[email protected]]

On Tuesday, September 24, 2019 at 10:59:46 PM UTC-4, JS wrote:
> Does anyone have a wing root mod for the Duo?
> That sharp 90 degree junction on the underside of the wing is right out of the 1970s.
> Contacted the usual suspects:
> Streifeneder.
> US S-H rep.
> Lindner.
> ...With no luck.
> Where's Rick Wagner when you need him?
> Thanks!
> Jim

Probably not all that critical on the high pressure side of the wing.
One could make some simple fillets and tape them on. Tuft the area and take some video with and without. This would show if worth doing any more. My guess would be not.
FWIW
UH

[Karl Striedieck[_2_]]

Better yet, install 1/4" foam weather stripping tape around the entire mating surface on the fuselage and forget the tape. Works great.

KS

On Tuesday, September 24, 2019 at 10:59:46 PM UTC-4, JS wrote:
> Does anyone have a wing root mod for the Duo?
> That sharp 90 degree junction on the underside of the wing is right out of the 1970s.
> Contacted the usual suspects:
> Streifeneder.
> US S-H rep.
> Lindner.
> ...With no luck.
> Where's Rick Wagner when you need him?
> Thanks!
> Jim

[Piet Barber]

On Saturday, September 28, 2019 at 7:48:08 PM UTC-4, Karl Striedieck wrote:
> Better yet, install 1/4" foam weather stripping tape around the entire mating surface on the fuselage and forget the tape. Works great.

Agree. Works great!

"You don't tape the wing roots on your Duo?!"
"No, I can't afford to both fly a Duo Discus *AND* tape the wing roots each time I fly" /s

[JS[_5_]]

> On Saturday, September 28, 2019 at 7:48:08 PM UTC-4, Karl Striedieck wrote:
> > Better yet, install 1/4" foam weather stripping tape around the entire mating surface on the fuselage and forget the tape. Works great.
>

Thanks, I'll give the foam strip a try. Had been considering it on the flat part of the fuselage (mid-chord bottom surface) for a while.
At least we won't have to argue with the tape.
Jim