37SZ-H Ringed Heli Engine

Plentiful power for 3-D thrills.

Designed to deliver premium performance for 30-sized machines, from extreme aerobatics to stable hovering!

The crankshaft has been re-engineered to reduce vibration, resulting in smooth power across the entire rpm range.
A larger rear bearing boosts power even more.
Features the same mounting pattern and muffler dimensions as the 32SX-H, for easy installation in most 30-size helis.

For easier access when making adjustments, the idle needle is positioned on the same side as the main needle.

Specifications
Exploded Views
Parts Listing
Accessories
Gallery

Stock Number: OSMG1945
Displacement: 0.37 cu in (6.07 cc)
Bore: 0.806 in (20.5 mm)
Stroke: 0.725 in (18.4 mm)
Practical rpm: 2,000-21,000
Output: 1.38 hp @ 18,000 rpm
Weight: 10.3 oz (293 g)
Includes: 20M carburetor, #8 glow plug
Requires: muffler, drive hub

Exploded View

Primary Accessories

Stock Number	Mfr Number	Product Description	Quantity Needed
COOP1115	FCPH15	Cool Power 15% Heli Fuel Gal	1
GPMQ4131	GPMQ4131	Great Planes Silicone Fuel Tubing Standard 3'	1
GPMQ4150	GPMQ4150	Great Planes Ultra Precision Fuel Filter	1
HCAP0700	HCAP0700	Hobbico 1.5V Glow Plug Battery	1
HCAP2503	HCAP2503	Hobbico Twist/Locking Glow Plug Clip	1

Field Equipment

Stock Number	Mfr Number	Product Description	Quantity Needed
HCAP2550	HCAP2550	Hobbico 4-Way Wrench w/Plug Storage	1

Optional Accessories

Stock Number	Mfr Number	Product Description	Quantity Needed
COOP1120	FCPH20	Cool Power 20% Heli Fuel Gallon	1
COOP1130	FCPH30	Cool Power 30% Heli Fuel Gal	1
DUBP1200	793	Dubro Remote Safety Ignitor	1
DUBP1201	794	Dubro Remote Safety Ignitor Recessed	1
HCAP3001	HCAP3001	Hobbico After Run Engine Oil 2 Fl Oz	1
MODP1221	M021	Model Products Remote Head Lock Single Cylinder	1
OSMR1004	71530400	O.S. Crankshaft Clamp 32-46	1