Lilly (oz16082)

About this Plan

Lilly. Simple chuck glider model. Wingspan 17 in.

Quote: "Gliding the Lilly, by Ralph Tekel.

The drastic shortage of imported model airplane supplies, notably balsa wood, means that model builders will have to cut down on the amount of material used on their gas jobs or outdoor commercials. Despite this fact, there's no reason why one should give up his past-time hobby when just as much fun and thrills can be had with a high flying soarer. And the plans below will enable you to build just that kind of a ship.

Look around in that balsa wood pile of yours. Surely, there must be pieces lying around that can be worked into a rudder, or an elevator. There might be a hunk good enough to serve as the fuselage.

You'll note that the plans are in half scale. Either make a photostat copy of the drawing calling for twice up or work right from the plans doubling everything on your full size plan.

When you've made a full size pattern of the wing panel trace it onto a piece of balsa 1/8 thick. The wing is made in halves so the tracing must be duplicated. Trim the excess wood with a razor and sandpaper and then proceed to work in the camber section.

The rudder and elevator are cut to the outlines shown, from 1/16 sheet and sanded to streamline sections. Note the direction of the grain in the wood.

Hard balsa is used in shaping the body. Thickness of the fuselage is 5/16. It has a gradual taper from the leading edge of the wing position to the nose as well as aft of the trailing edge down to the extreme tail.

In assembling the Lilly cement the elevator in position. Be sure that when the rudder is attached both tail surfaces are at perfect right angles to each other. To assemble the wings, place the body between two heavy objects to keep it perfectly straight and then attach both wings with a generous application of cement. Place props at the extreme wing tips to obtain the correct dihedral angle. Allow plenty of time to dry.

Apply a cement skin over the joining wing panels to make for greater strength. The position for the skin is illustrated by the closely dotted section along the center of the wing.

By gliding tests you will be able to determine the model's natural reactions to the elements, and adjust your Lilly accordingly.

Although this glider is not designed for tow launching, it might be worthwhile experimenting with the idea. Simply cement a strong wire hook slightly back of the blacked area shown on the plans. Then using a tow line measuring about 75 feet, attach to the hook with a loop and run directly into the wind."

Direct submission to Outerzone.

Supplementary file notes

Article.

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