Cox model engine
| Cox .049 Engine Specifications | |
|---|---|
| (All Cox .049 Engines) | |
| Bore: | 0.406 inches (10.31 mm) |
| Stroke: | 0.386 inches (9.8 mm) |
| Displacement: | 0.04997 cubic inches (0.8189 cc) |
| Bore/Stroke Ratio: | 1.05:1 (Oversquare) |
| Cox .051 Engine Specifications | |
| Bore: | 0.41 inches (10.41 mm) |
| Stroke: | 0.386 inches (9.8 mm) |
| Displacement: | 0.0509 cubic inches (0.8341 cc) |
| Bore/Stroke Ratio: | 1.06:1 (Oversquare) |
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. The business gets its name from Leroy (Roy) M. Cox, the founder. Roy Cox started 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. One of the new owners of the remaining Cox engine and parts inventory has launched a website, Cox International with online store.
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 (Roy) M. Cox.
The Cox .049 Engine is a 2-stroke internal combustion glow plug engine. These engines use a glow plug to heat the fuel/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, and the catalytic reaction of the platinum element in the glow plug and the methanol in the fuel and does not depend in any way upon the continued use of the battery. 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.
...
Wikipedia