O.S. Engines .18CV-RX ABC 11J Roto Carb OSM11880
OSM11880 O.S. .18 CV-RX w/11J Rotary Carb

O.S. Engines .18CV-RX ABC 11J Roto Carb OSM11880

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O.S. Max .18CV-RX side exhaust engine with 11J rotary carburetor and pull starter has larger displacement and more power in a .15 size crankcase. Rotary carburetor with two screwdriver-adjustable needles, mixture control screw, 360ยบ fuel inlet, and big 6.5mm bore for more torque. True ABC construction with CAD designed 3-port liner. Machined, aluminum piston boosts performance and enhances durability. Standard ball bearing suppported crankshaft with enlarged fuel ports for smoother air and fuel flow. Larger, thicker rear bearing handles racing loads with ease. High volume#203 air filter assembly with two pre-oiled foam elements. Side exhaust. Two year warranty. This product includes one O.S. Max .18CV-RX engine with, 11J carb, pull starter,#8 glow plug, air filter assembly with two elements, mounting spacers, four 3 x 14mm phillips head screws, instruction manual.


Glow fuel for vehicles with 5%-30% nitromethane and no less than 18% lubricant content. 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 c

Bore: 0.63" (16.0mm)
Stroke: 0.59" (15.0mm)
Displacement: .18 cu in (3.0cc)
Practical RPM: 3000-32,000
Power Output: 1.35 PS, 1.33 HP/28,000 RPM
Weight: 10.4oz (295.5g)
Width between mounting holes same side: 0.4" (11mm)
Width between mounting holes opposite side: 1.2" (31.4mm)
Crankcase width: 1.6" (40mm)
Distance from starter to drive hub: 2.9" (74.8mm)
Distance from starter to end of crankshaft: 3.4" (87.8mm)
Distance from center of crankcase to drive hub: 1.6" (41mm)
Height/bottom of crankcase to top of cylinder head: 4" (100.9mm)
Height/center of crankshaft to top of cylinder head: 3.2" (80.9mm)

Needle Settings
High Speed: 2.5 turns out from fully closed
Metering Needle (low speed): .5 turn in from flush with carb body
Throttle Stop Screw: 1mm open from fully closed

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