O.S. .50 SX Ringed w/Muffler

FEATURES: Produces up to 10% more horsepower than a .46 size engine and fits in the same size mounting space. One-piece metal remote needle valve can be positioned vertically or horizontally to adapt to in-cowl or side-mount applications. Crankshaft supported by low drag, high-speed dual ball bearings. Universal fuel inlet nipple is rotatable for easier access. Ringed piston construction insures long engine life.

INCLUDES: One O.S. Max .50 SX Aerobatic Sport Airplane Engine with 40B carb. One #8 glowplug. One #873 muffler with 3mm x 35mm socket head cap screws. One instruction book, decal sheet, and warranty sheet.

REQUIRES: Glow starter, fuel with 5%-15% Nitromethane and 18% oil content, 2.5mm ball wrench to tighten muffler screws (can use GPMR8012).

SPECS: Displacement: 0.499 cu.in." (8.17cc) Bore: 0.866" (22mm) Stroke: 0.847" (21.5mm) Horsepower: 1.8 @ 17,000 rpm Practical RPM Range: 2,000-17,000 Weight: 13.76oz (390g) without muffler Crankshaft size: 1/4-28 Suggested props: 11x6-10,12x6

MOUNTING DIMENSIONS: Distance between mounting holes on same side: 0.69" (17.5mm) Distance between mounting holes on opposite side: 1.73" (44mm) Height from bottom of crankcase to top of cylinder head: 3.50" (89mm) Height from center of crankcase to top of cylinder head: 2.77" (70.5) Length from needle valve to end of crankshaft: 4.76" (121mm) Width at mounting flanges: 2.04" (52mm) Width at crankcase: 1.42" (36mm)

COMMENTS: Warranty, This engine is guaranteed free of defects in parts and workmanship for 2 years from date of purchase. Crash damage and problems caused by neglect, abuse, customer disassembly, tampering, use of substandard fuel or incorrect assemblies, or any use of the engine for which it is not specifically intended, voids the warranty.