O.S. Engine OSMG1555 GT55 Rugged RC Aircraft Engine  [OSMG1555]

Overview of the GT55 O.S. Engine

The O.S. Engine GT55 Gas Engine, model OSMG1555, combines rugged build quality with practical features tailored to serious model flyers. It is designed to provide dependable power and straightforward servicing in the field.

Heat Management and Single-Piece Case

To manage temperatures, the GT55 uses numerous extra-deep thin fins on both head and crankcase for effective heat rejection. The one-piece crankcase removes jointed surfaces, improving rigidity and reducing potential leak points.

Front Carburetor Layout and Mounting Efficiency

The forward-positioned carburetor improves cooling and supports stable fuel delivery. Shorter standoffs tighten the engine footprint, lowering vibration. The direct throttle and choke linkages make rigging faster and neater.

IG-01 Electrical System and Starting

The IG-01 Capacitive Discharge Ignition features microcomputer-controlled spark advance and magnetic timing detection for reliable starts. It compensates for wet plugs and uses minimal standby current, making it practical for field use.

With a focus on reliability and easy installation, the O.S. Engine GT55 is a strong choice for pilots who want a durable gas engine and modern ignition control.