Flying model helicopters of any sort were fairly rare in 1952, when this edition of Air Trails magazine hit the news stands. The sophisticated, miniaturized, smart stabilization systems of today's models were not available at any price, and radio control was the realm of military research vehicles. Methods for driving the rotors included glow and gas engines, rubber bands, and even Jetex engines. Many free flight helicopters sported the JETicopter's arrangement of a pair of engines at the end of a moment arm which caused rotation. Cox .010 and .020 engines were a popular choice, as were the Jetex engines. I always wondered what happened when one engine quit, resulting in asymmetrical thrust. It probably caused a few moments of consternation as the craft bucked around in the sky until the second one finally quit. There were full-size, man-carrying helicopters that used small jets to drive the rotors. That $3.75 price in 1952 is the equivalent of $35.60 in 2018 dollars (per the BLM Inflation Calculator), which is cheap for a model kit and one engine with fuel pellets!
Check out my vintage Cox Sky Copter model, which used a single top-mounted .020 engine to drive the rotors via counter-torque.
Now You can Fly a Model Helicopter!
New flying thrills for you with a real flying model helicopter! Duplicates the flight of an actual helicopter ... twin-jet power takes it to a height of 100 feet or more ... self-adjusting rotors bring it to a perfect landing.
Kit includes all parts, die-cut balsa ... full scale plans, rotor hinges and engine mounting clips ... materials for covering fuselage and forming landing gear.
Kit includes one Jetex #100 engine
Use the amazing Jet ex Jet Engines for reliable, effective power for model planes, boats and cars.
Prices including instructions, fuel, accessories, mounting clips
#50 wing spans 12" - 20" $1.95
#100 wing spans 18" - 30" $4.50
#200 wing spans 24" - 36" $5.95
#350 wing spans 36" - 54" $8.95
Additional fuel supply for each size:
65c - 75c - 95c - $1 .00 respectively.
See your Dealer or write: American Telasco, Ltd., 55 W. 42nd St., New York 18, N. Y.
Posted June 17, 2018