O.S. MAX 37SZ-H Ringed

This is the O.S. Max .37 SZ-H Ring Helicopter Engine.
                        (Two year limited warranty)

FEATURES: Premium performance for 30-sized machines, from extreme aerobatics to
            stable hovering
          Same mounting pattern and muffler dimensions as the .32 SX-H, for
            easy installation in most 30-size helis
          Re-engineered crankshaft reduces vibration resulting in smooth power
            across the entire RPM range
          20M carburetor with Idle Needle positioned on same side as Main
            Needle for easier adjustments

INCLUDES: One O.S. Max .37 SZ-H Ring Helicopter Engine, with #8 Glow Plug,
            20M carburetor, instruction manual and sticker sheet

REQUIRES: Muffler
          Heli fuel with 10%-30% nitro content

SPECS     Displacement: 0.37 cu in (6.07cc)
          Bore:         0.806 in  (20.5mm)
          Stroke:       0.725 in  (18.4mm)
          Practical RPM range: 2000-21,000
          Output: 1.4 ps @ 18,000 RPM
          Weight: 10.3oz (293g)
          Crankshaft Size: 1/4-28
          Distance between mounting holes same side:              0.6" (15mm)
          Distance between mounting holes opposite side:          1.5" (38mm)
          Width including mounting flanges:                       1.8" (45mm)
          Width neglecting mounting flanges:                      1.5" (38mm)
          Height/bottom of crankcase to top of cylinder head:     3"   (76mm)
          Height/bottom mounting flanges to top of cylinder head: 2.4" (61mm)
          Distance/center of crankcase to front bearing:          1.8" (46mm)
          Distance from backplate to front bearing:               2.6" (67mm)
          Distance from backplate to end of crankshaft:           3.7" (94mm)
          Low speed needle 1 turn IN from flush with carb body
          High speed needle 1.5 turns OUT from closed