S-Tee mod for symmetrical wing

Anything that's NOT a straight per-instructions kit build AND not related to one of the established build contests
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KevinC
Posts: 199
Joined: Tue Feb 09, 2021 7:54 pm
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S-Tee mod for symmetrical wing

Post by KevinC »

My intent is to transform an S-Tee kit from relaxing park flyer into a pattern/stunt plane by replacing the standard flat bottomed wing with a zero-dihedral fully symmetrical wing designed and produced by Doug Hart at my request specifically for this experiment. I may also try enlarging the control surfaces to enhance 3d flying characteristics. Here's how that turned out. Thanks, Doug, for the custom cut.
S-Tee Symmetrical Wing 1.jpg
S-Tee Symmetrical Wing 2.jpg
S-Tee Symmetrical Wing 3.jpg
S-Tee Symmetrical Wing 4.jpg
S-Tee Symmetrical Wing 5.jpg
S-Tee Symmetrical Wing 6.jpg
S-Tee Symmetrical Wing 7.jpg
S-Tee Symmetrical Wing 8.jpg
KevinC
Posts: 199
Joined: Tue Feb 09, 2021 7:54 pm
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S-Tee mod for symmetrical wing part 2

Post by KevinC »

Now to the fuselage modification. The Hummer wing has significantly less chord than the stock flat bottomed S-Tee wing. Doug said S-Tees tend to be tail heavy anyway so I should mount the Hummer wing at the BACK of the S-Tee wing saddle to help with balance. Therefore, here are my fuse mods for the symmetrical wing.
S-Tee Wing 9.jpg
S-Tee Wing 10.jpg
S-Tee Wing 11.jpg
KevinC
Posts: 199
Joined: Tue Feb 09, 2021 7:54 pm
Contact:

S-Tee with symmetrical wing: The Final Result

Post by KevinC »

And here she is. The smaller chord Hummer wing is set at the rear of the existing wing saddle to achieve balance and it's STILL a bit nose heavy but once I get her trimmed out, she should be a fun flyer.
S-Tee with Hummer wing.jpg
KevinC
Posts: 199
Joined: Tue Feb 09, 2021 7:54 pm
Contact:

Final Word: S-Tee mod for symmetrical wing

Post by KevinC »

Flight on 2s with a 6x3 prop was sluggish at best and overall unsatisfying. Switching to 3s power and a 5x3 prop made a world of difference and also solved a secondary problem = since I have a simple tail skid rather than a tail wheel, the plane wanted to careen wildly left on power up for takeoff. The 3s/5x3 prop switch greatly reduced that careen left tendency. The heavier 3s battery also solved a minor balance issue. Finally, after a minor tweak of control throws and expo amounts, I have it flying the way I want and I'm quite pleased with how it turned out.
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