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O.S. Engines
O.S. ENGINES MAX 55AX Nitro Aircraft Engine, .55 Size w/ E-3071 Silencer - OSM15612
O.S. ENGINES MAX 55AX Nitro Aircraft Engine, .55 Size w/ E-3071 Silencer - OSM15612
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O.S. ENGINES MAX 55AX Nitro Aircraft Engine, .55 Size w/ E-3071 Silencer - OSM15612
Overview
This is the O.S. Max .55 AX Aircraft Engine with Muffler. Advanced Bi-Metallic Liner process uses a double layer of plating material rather than one thick layer. This helps the metal bond to the cylinder and makes the plating more durable. Also, the plating process is more consistent, resulting in a more precise fit between piston and sleeve for better compression and longer life.
Features
- Same mounting dimensions as the O.S. Max .46 AX
- Power Box positionable muffler
- Angular head design offers increased surface area for better cooling
- 40J Carburetor with diagonally placed Needle Valve eliminating Remote Needle Valve placement
Specs
- Displacement - .545 cu in (8.93cc)
- Bore - .906" (23mm)
- Stroke - .846" (21.5mm)
- Practical RPM - 2,000-17,000
- Power Output - 1.75 PS, 1.68 HP/16,000 RPM
- Weight w/o muffler - 14.29oz (405g)
- Weight w/ muffler - 18.52oz (525g)
- Recommended Props - 12x7-8, 13x6-7
- Crankshaft thread size - 1/4-28
- Distance/remote needle to end of crankshaft - 4.7" (119.4mm)
- Distance from center of engine to drive hub - 2.4" (60.4mm)
- 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 between mounting holes same side - .69" (17.5mm)
- Width between mounting holes opposite side - 1.7" (43.2mm)
- Diameter of muffler body - 1.5" (38.1mm)
- Angle of muffler in relation to engine - 4°
- High Speed Needle - 2 turns out from fully closed
- Low Speed Needle - 3mm gap between the needle and spray bar at full throttle (looking down the neck of the carb)
