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Overview
Premium performance for
30-40-sized machines, from extreme aerobatics to stable hovering
Same mounting pattern
and muffler dimensions as the .32 SX-H, for easy installation in most 30-40
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:
O.S. Max .37 SZ-H Ring
Helicopter Engine
#8 Glow Plug
20M Carburetor
Instruction manual
Sticker sheet
Specifications:
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: 10.3 oz (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