This is the O.S. Max .46AXII ABL BB model airplane engine with muffler. It is ideally suited to sport and aerobatic aircrafts.
Requires: Fuel containing 5%-20% nitromethane with at least 16% lubricant. Most of the fuels we carry meet or exceed the lubricant content required for optimum performance and maximum engine life. In the past, the conventional lubricant content used in fuel was 18%. But with new advanced technologies, fuels like Red Alert and O'Donnell for example, have a better quality of lubricants even though the percentages of lubricant content are lower. These high-tech lubricants provide exceptional cooling and protection.
Displacement: 0.455 cu in (7.45cc)
Bore: 0.866" (22mm)
Stroke: 0.772" (19.6mm)
Practical RPM: 2000-17000
Power Output: 1.65PS, 1.67HP/16000 RPM
Weight: 13.3oz (378g) without muffler
Recommended Propellers: 10.5x6, 11x6-8, 12x6-7, use 10x6 for break-in
Crankshaft Size: 1/4-28
Distance from remote needle to end of crankshaft: 4.7" (119.4mm)
Distance from center of engine to drive hub: 2.4" (61mm)
Distance from center of engine to end of crankshaft: 3.4" (87.6mm)
Distance/crankshaft center to muffler exhaust outlet: 3.9" (100.5mm)
Height from crankcase bottom to top of cylinder head: 3.3" (85.2mm)
Height/crankshaft center to top of cylinder head: 2.6" (67.4mm)
Width including mounting tabs: 2" (50.8mm)
Width not including mounting tabs: 1.4" (35.6mm)
Width/mounting hole centers same side: .69" (17.5mm)
Width/mounting hole centers opposite side: 1.7" (44mm)
Diameter of muffler body: 1.5" (38.1mm)
Angle of muffler in relation to engine: 4º
Needle Valve: 1½ to 2 turns out from closed position
Low Speed Needle (aka: Mixture Control Valve): Close throttle rotor gradually from the fully opened position until it is just fully closed (do not turn further). Screw in the Mixture Control Screw until it stops. Now open the Mixture Control Screw approx. one turn.