This is the .46LA engine from O.S. Max designed for sport airplane use.|
This is a non-ringed engine with a Two-Year Warranty.
This engine has a natural finish w/"O.S." & "46LA" on the side.
Crankshaft is set in one long bronze Oilite bushing (no bearings)
Schnuerle porting (AKA Schnuerle scavenging)
Nylon backplate with remote needle valve
Aluminum piston with Nickel-plated brass cylinder liner.
One expansion-style muffler #E-3030
One instruction manual and sticker sheet
One assembled engine with glow plug
Two 3x30mm phillips head screws to bolt muffler to engine
Construction: Aluminum 1-piece crankcase, piston, cylinder head
Bore: 23.0mm (0.906")
Stroke: 18.4mm (.724")
Horsepower: 1.2 PS, 1.18 HP at 15,000 RPM
Distance from remote needle to end of crankshaft: 4.5" (114mm)
Distance from center of engine to drive hub: 2.0" (51.2mm)
Distance from center of engine to end of crankshaft: 3.0" (76.3mm)
Height from crankcase bottom to top of cylinder head: 3.3" (84.7mm)
Height/crankshaft center to top of cylinder head: 2.7" (69mm)
Width including mounting ears: 1.9" (48mm)
Width not including mounting ears: 1.2" (32mm)
Width between mounting holes same side: 0.69" (17.5mm)
Width between mounting holes opposite side: 1.6" (40.5mm)
Width between muffler mounting holes: 1.4" (36mm)
Width of exhaust opening: 1.1" (29mm)
Height of exhaust opening: 0.3" (7mm)
Diameter of muffler body: 1.3" (33.5mm)
Angle of muffler in relation to engine: 4°
Weight: 272g (9.6oz without muffler)
Crankshaft Thread Size: 1/4-28
Recommended Props: Break In: 11x6
Trainer and Sport Models: 11x6, 11x7
Scale Models: 12x5, 12x6
Practical RPM Range: 2,000 - 16,000 RPM (This engine will not turn
this many RPM on the ground) RPM curve is when the engine unloads.
Fuel with 5% - 15% Nitromethane and 18% (minimum) oil content
(Most of the 5%-15% fuels we carry meet these requirements)
The factory setting of the needle valves are as follows:
High speed needle: Turn all the way in and back out 2 turns.
Air Bleed screw: Turn all the way in and back out 2 turns.
The coverplate for the FX Series will NOT work on this engine.