Model aircraft: Cox model engine, Scale model, Radio-controlled aircraft, Control line, T-Rex, Free flight, Dragon Models Limited, Wings Across America 2008, Gordon Burford, Glow plug, List of model aircraft manufacturers, Herpa Wings, 3D Aerobatics

Source: Wikipedia. Pages: 57. Chapters: Cox model engine, Scale model, Radio-controlled aircraft, Control line, T-Rex, Free flight, Dragon Models Limited, Wings Across America 2008, Gordon Burford, Glow plug, List of model aircraft manufacturers, Herpa Wings, 3D Aerobatics, Heller SA, Andy Lennon, Frog, Park flyer, Paul K. Guillow, Inc., Orme's Law, Round-the-pole flying, Juan Sánchez Vidal, Foamie, Walkalong glider, Model Aviation, Windrider walkalong glider, Tumblewing, No-Cal, Mississauga Model flying club, F5b, Captive plane, Model Airplane News, Turboplan. Excerpt: Cox model engines are used to power small model airplanes, model cars and model boats. Cox engines were in production for more than 50 years between 1945 and 2006 by L.M. Cox Manufacturing Co. Inc. who later became "Cox Hobbies Inc." and then "Cox Products" before being sold to Estes Industries when it became Cox Models. On February 7, 2009 Estes Industries stopped producing Cox engines and sold all of their remaining inventory i.e. mainly spare parts, to several private buyers from Canada and USA. Two of the new owners of the remaining Cox engine and parts inventory have launched separate websites, Cox International and Vintage Glow Engines. Millions of engines were produced and they became the most common 1/2A Class 0.049 cubic inch engine in the world and probably still are today. Although the production of the engines ceased some years ago now, engines made as far back as the 1950s are still sold "as new" and in abundance on ebay world wide. The Cox range of model engines were the brain child of entrepreneur Leroy M. Cox. The Cox .049 Engine is a 2-stroke internal combustion glow plug engine. These engines use a glow plug to heat the air within the cylinder to start. Once running it is disconnected and operates in the same manner as a diesel engine. The self ignition is due to the heat produced from the compression of the air/fuel mix. Fuel intake to the engine is controlled by a simple needle valve and venturi system. Fuel/air mixture intake to the crankcase is controlled via a reed valve or rotary valve depending on the engine design. In a reed valve engine the valve is drawn open by suction as the piston moves upward on the compression stroke. As the piston moves down on the power stoke, the pressure in the crankcase causes the reed valve to close. The fuel air mixture in the crankcase is then forced past the piston via the transfer/bypass ports in the cylinder. One characteristic of a reed valve is that the engine will run in either direction; an advantage f