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    .55HZ-R DRS Ring 40L-R **Rabais de 100.00$**

    TECH NOTES
    This is the Limited Edition OS 55HZ-R DRS Ringed Helicopter Engine
    with the DRS (Demand Regulator System).
    FEATURES: DRS system delivers fuel to the regulator under constant pressure
    for precise fuel delivery throughout the entire tank from full to
    empty
    Mounting position of DRS is perfectly in line with the carb for
    consistent operation in all attitudes of flight
    Same mounting bolt pattern as the OS 50SX-H Hyper
    Dual needle 40L-R carburetor allows independent adjustment of idling,ZoneHobbies
    hovering and high speed with four arm throttle lever for use with
    a variety of servo brands
    HZ Hyper low profile six fin cylinder head
    Two year limited warranty through Hobby Services beginning at the
    date of purchase
    INCLUDES: OS 55HZ-R DRS Ringed Helicopter Engine, #8 Glow Plug, Check Valve and
    Instruction Manual
    REQUIRES: 10% to 30% nitro Fuel with at least 18% lubricant (Helicopter Mix)
    Fuel filter and starting equipment
    SPECS: Engine;
    Displacement: 0.55 cu in (8.93cc)
    Bore: 0.91" (23mm)
    Stroke: 0.85" (23.5mm)
    Practical RPM: 2,000-20,000 RPM
    Output: 2.1 PS, 2.07 HP
    Weight: 15.1oz (429g)
    Carburetor Settings:
    High Speed Needle Valve, Approximately two turns open from fully
    closed position
    Idle Mixture Control Screw, Factory set at center, turn right to
    richen or left to lean mixture
    Medium Speed Needle Valve, One turn open from fully closed, adjust
    only after setting high speed needle and idle mixture screw, do
    not turn more than 90° right or left
    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 12/23/10
    ir/jxs

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