THE WALLY WING
"How to make a high performance flying wing for $20!"
(batteries & electronics not included :)
Here's the $4 "Sky Rider", a 4.5' span, 727 looking foam toy glider we start with.
The "Wally Wing's" minimum flight design goals;
- Better glide performance than the current crop of foam flying wings. (hey guys, stop calling it that Z word! :)
- The bigger one below is a typical Z... clone core.
- (Wally has a higher AR (about 8 to 1) with a longer span.)
- Easy (and cheap) to build as I have little patience (and less money).
- Inexpensive S400 gear and Hitec Focus III FM radio and 2) HS-81 servos.
- Simple, almost indestructible, rubber band stress relieved motor/battery pod (V2).
- Good climb, slow and high speed performance with great duration on NiMH cells.
I'm happy to report that these goals have been successfully met.
(animated gif below - wait for complete load to view)
I won't compare the Wally to the "competition" but I can say that this wing is the most flying fun I've ever had! And to know that you can spin it in from a hundred feet without damage really helps in confidence building. (Read, risk taking!)
Here's a variation on fin placement. Flies hotter and the roll rate is increased. I think the tip plates act like wing extensions maybe, increasing lift but adding more drag and inertia.
Here's the current specs for the second generation V2;
- Wing span - 53.5"
- Area - 361 sq. in. (2.5 sq ft.)
- RTF weight - 23 oz. with RS 1600 NiMH 8 cell pack.
- 6vt. S400 powered
- Kontronik Rondo 400 15A ESC
- 6.3 x 3 Graupner CAM folding prop configured as a pusher.
- Mixed elevons for pitch & roll control.
V1 was constructed by adding spruce spars, gluing the wing halves together, building a simple stick frame for the motor, carving an open cell foam pod that holds the battery pack and covers the frame, and taping. (V2 construction is MUCH easier and stronger!)
V1's pod used peg-in-hole attachments with rubber bands and velcro to hold it all onto the wing, a crash releases the frame and battery preventing any damage.
V2's pod is directly rubber banded onto the wing for easy CG adjustment with different battery packs, and allows any direction impact release.
Learn how to build your own Wally Wing.
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