About this Plan
Offenbach Stingray. Control line sport model. For Bunch Tiger Aero motor, and similar engines (Forester 29 and Baby Cyclone are mentioned).
Quote: "The Stingray is a fast, strongly constructed airplane for control line flying. Test models have performed comsistently around the 100 mile-an-hour mark and some flights have been clocked at 110. Steel piano wire of about .010 in thickness is best suited for this type of flying. 60-foot radius is very satisfactory for flying this model, however, the best speed has been obtained on 50-foot wires. (The shorter wires out down drag.) One should practice on the longer wires however, so that dizziness may be overcome.
A control handle may be made from a piece of wood about the size of a broom handle and about. four inches long, attached holes should be drilled about 1/2 in from each end. Strong fish line should be attached to the ends of the control wires and the fish line looped through the holes in the stick. Small wood screws should be put in each end of the stick so that the lines may be adjusted, and when the stick is held in a vertical position the elevators should be horizontal.
Hold the stick in your hand so that when the top of the stick is moved back toward you, the elevator will move upward, thus by moving your wrist the flight of the plane may be controlled either upward or downward. Toward the latter part of the flight try to hold the plane about 6 or 8 feet off the ground, then when the motor quits, let it glide down closer to the ground and level it off. As the plane slows down, gradually pull; on the 'up' control and attempt toland it in 'three point' position. With a little practice, very smooth landings may be accomplished.
Follow step-by-step instructions beginning on sheet 2..."
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