O.S. FL-70 RC 4-Stroke Airplane Engine

This is the O.S. Max FL-70 4-Stroke Model Airplane Engine.
          This FL-70 engine provides easier handling and maintenance,
    lighter weight and lower cost to 4-stroke newcomers and Sunday fliers.

FEATURES: Approximately 20% lighter than the FS-70SII owing to a plastic cover
            plate, redesigned mechanism and fewer parts
          Easier handling 60W Airbleed-type Carburetor
          Ringless piston/liner set for easier maintenance
          Redesigned muffler pressure system for stable power and response
            regardless of fuel level in tank
          Two year limited warranty

INCLUDES: One O.S. Max FL-70 4-Stroke Engine with F-4030 silencer
          One T-fitting (for easier re-fueling)
          One Type F glow plug, 
          One instruction booklet
          One O.S. decal sheet

REQUIRES: Fuel: 5%-15% nitormetane with 18% lubricant. Synthetic, castor or
            a combination of synthetic and castor lubricant blend may be used.
          NOTE: Certain four-cycle fuels cannot be used due to low oil content.
            When choosing fuels for this engine, the modeler must be sure to
            select a fuel with at least 18% lubricant content.
          Misc. starting and field equipment

SPECS:    Displacement:      0.699 cu in (11.45cc)
          Bore:              1.091 in (27.7mm)
          Stroke:            0.748 in (19.0mm)
          Practical RPM:     2,300 - 12,000 RPM
          Power Output:      1.1ps/11,000 RPM
          Weight:            18.3oz (519g) All Parts included
                             16.5oz  (467g)
          Recommended Props: Sport & Aerobatic - 12x7, 12.5x7 and 13x6
                             Trainer & Scale   - 12.5x7, 13.6-7

          Distance from center of engine to drive hub:           59.5mm (2.34")

          Distance/crankshaft center to muffler exhaust outlet:    85mm (3.40")
          Height from crankcase bottom to top of cylinder head: 107.5mm (4.23")
          Height/crankshaft center to top of cylinder head:      89.5mm (3.52")
          Width including mounting ears:                           54mm (2.13")
          Width not including mounting ears:                     35.4mm (1.39")
          Width between mounting holes same side:                  20mm (0.79")
          Width between mounting holes opposite side:              45mm (1.77")
          Diameter of muffler body:                              25.8mm (1.02")
          Angle of muffler in relation to engine:                   20°
          Muffler/Header Thread size:                            M11x.75
          Crankshaft thread size:                                1/4-28
          Valve Clearance: Between .04mm and .1mm (or between .0015" and .004")
            This is measured between the valve tip and rocker arm.

          Needle Settings: High Speed: 1.5 turns out from fully closed
                           Low Speed:  Needle tip half way across the small
                                       hole cut in the front of the carb

COMMENTS:  During the break-in process, O.S. recommends using the same fuel and
            prop as you intend to use for flying your model.
          Wrenches, choke valve extension and mounting template are no
            longer included per O.S.
          Some differences between 4-Stroke and 2-Stroke engines
           -4-strokes are quieter
           -4-strokes get better fuel economy
           -2-strokes generate more RPM (11,000-13,000 RPM with prop
              while 4-strokes rev to around 9,500 RPM)
           -4-strokes generate much more torque and will swing a larger prop
           -4-strokes have a realistic sound, like a real aircraft engine