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  This is the OS 55HZ Hyper Ringed Helicopter Engine with the 40L Carburetor.

FEATURES: Ideal for 3D flight-power equal to .60 size heli engines
          Same mounting bolt pattern and silencer size as the OS 50SX-H Hyper
          Dual needle 40L carburetor allows independent adjustment of idling,
            hovering and high speed with four arm throttle lever for use with
            a variety of servo brands
          HZ Hyper low profile black aluminum six fin cylinder head
          Two year limited warranty through manufacturer beginning at the date
            of purchase

INCLUDES: OS 55HZ Hyper Ringed Helicopter Engine with 40L Carburetor, #8 glow
            plug and instruction manual

REQUIRES: 10% to 30% nitro Fuel with at least 18% lubricant (Helicopter Mix)
          Exhaust system such as the OS PowerBoost Pipe, OSMG2880
          Starting equipment

SPECS:    Displacement: 0.55 cu in (8.93cc)
          Bore: 0.91" (23mm)
          Stroke: 0.85" (23.5mm)
          Practical RPM: 2,000-17,000 RPM
          Weight: 14.39oz (408g)
          Carburetor Settings:
            High Speed Needle Valve, Two turns open from fully closed
            Idle Mixture Control Screw, Factory set-do not adjust
            Medium Speed Needle Valve, Two turns open from fully closed
          Distance/top of cylinder head-bottom of mounting tabs: 2.8" (72.6mm)
          Distance between mounting holes same side: 0.68" (17.5mm)
          Distance between mounting holes opposite side: 1.73" (44mm)
          Distance between muffler mounting holes: 1.4" (37mm)
          Cylinder Head Diameter: 1.8" (47mm)
          Distance/bottom of crankcase to top of cylinder head: 3.6" (90.9mm)
          Distance from center of engine to front bearing: 2.03" (51.6mm)
          Distance from center of engine to end of Crankshaft: 3.2" (82.6mm)
          Distance from center of engine to backplate bolt: 0.98" (25mm)
          Distance from center of engine to throttle lever: 1.5" (38mm)

                                                                    jxs 9/01/09
                                                                         ir/jxs



– If you need more information, use these O.S. resources –

Click Here: Manufacturer's Product Web Page
E-mail: enginesupport@hobbico.com
Web Site: http://www.osengines.com/
Phone: 217-398-8970


 
Postal Address:
O.S.
3002 N. APOLLO DRIVE, SUITE #1
CHAMPAIGN, IL 61822  








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