Evolution Engines

7 Cyl 77cc 4 Stroke Glow Radial Engine A stunning engine with solid performance and reliability–the 7-cylinder 77cc 4-stroke glow radial engine is designed for larger models, specifically scale applications where the use of a radial engine in a round cowl will provide the ultimate scale look for the modeler’s plane. While providing great looks and sound, it also delivers the dependability and performance of Evolution. Features Cylinder head and crankcases produced from aircraft grade alloys Heavy-duty double bearing crankshaft Billet aluminum pistons and hardened steel rings Hard-chromed and lapped cylinder bores Hardened steel cams Carburetor jet valve incorporating latest design with a split opening for smooth acceleration Zero percent or low nitro (5–10%) fuel with low oil content (5–7% oil/fuel ratio) Specifications Type: Engine Bore: 0.93 in (23.7mm) Crankshaft Threads: 10 x 1mm Cylinders: 7 Cylinder Type: Ringed Displacement: 4.7 cu in (77cc) Fuel: 0–10% nitro, 9% oil for break-in and for normal oper...