This is the O.S. .91HZ-PS 3D Helicopter Engine

with PD-08 Pump.

 專為3D飛行設計的引擎

FEATURES: PD-08 pump works with a matched 61B-P carburetor and integral
            regulator to deliver a steady fuel supply at any attitude even
            during the most adventurous 3D manuevers
          Short rectangular heatsink can be entirely enclosed inside cooling
            shroud to lower operating temperatures
          Newly designed piston and crankshaft further reduces vibration and
            improves torque stability over entire RPM range
          Thermo insulator on carburetor blocks engine heat to ensure more
            stable fuel/air mixture
          Pull pull throttle setup
         
INCLUDES: O.S. .91HZ-PS 3D Helicopter Engine with PD-08 Pump, 61B-P Carb,
           #8 Glow Plug, instruction manual.

SPECS:    Displacement: 0.91 cu in (14.95 cc)
          Bore: 1.09 in (27.7mm)
          Stroke: 0.98 in (24.8mm)
          Practical RPM: 2,000 - 16,000
          Power Output: 3.4 hp @ 15,000 RPM
          Weight: 1.4 lb (635g)
        
          Needle Settings: High Speed: 2 turns out from fully closed 
                           Mid Range:  1/2 turn open
                           Mixture Control (low speed): indentation on screw
                                       head straight up and down (vetrical)
    高速油針設定: 鎖死後開2圈

    中速油針設定: 開1/2圈

    設定會因溼度 溫度 燃油% 負載等因素改變