v12 RC Engine Model Construction

v12 engine with compressed air injection, hand made using taditional methods:12 cm3 of displacement, the diameter of the cyllinder is 11, 3 mm, the stroke of the pistons 10mm, it works with only constructed with stainless steel, aluminum and dedicate this engine to his grandchildren:Sara, Carmen, Jose and engine is for is the reason to work with compressed air, to avoid has made the plans and all parts, except the engi