OS Engine 55AX (Limited Edition OS 80th Anniversary)

The O.S. Max-55-AX-GP engine has a compact body that enables it to be fit within most cowls. It is a high performance two stroke engine designed for sport and aerobatic models. It features a 40K carburetor needle valve assembly that has now been angled backwards for safety. Also included is the new E-3071 silencer (power box) which develops very effective muffling. Displacement: 8.93 cc / 0.545 cu.in Bore: 23.0 mm / 0.906 in. Stroke: 21.5 mm / 0.846 in. Output: 1.7 ps / 1.68 hp / 16.000 r.p.m. Practical R.P.M.: 2,000-17,000 r.p.m. Weight: 404 g / 14.25 oz. (Engine) 108 g / 3.81 oz. (Silencer)