1/4-Scale, 9-Cylinder Scratch-Built Engine
Andy Johnston must take his RC modeling very seriously … why else would he spend over 3 years building a true-to-scale, rotary Bentley engine spending another 2 years building an Avro 504K from plans, specifically for the engine? The 9-cylinder powerplant has cast-iron liners that are 1mm thick, aluminum finned barrels and a total of 347cc displacement for a range of 700 to 3500rpm with a 25.5 x 23 prop that has a scale blade...
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