O.S. Quality & Power
comes to Gasoline Engines
GT Series
The same craftsmanship and performance that O.S. glow engines
are famous for can now be found in the gasoline-powered GT55 and
GT33. They boast 10-15% more power than any other engines in their
respective classes — and both engines come with the easy-starting
Capacitive Discharge Ignition (CDI) system.
Getting more power for your plane is as easy as equipping it with a GT55
or GT33 gasoline engine — and the difference it makes can be dramatic.
GT55
Displacement: 3. 35 cu in ( 54. 93 cc)
Bore: 1.618 in ( 41.2 mm)
Stroke: 1.618 in ( 41.2 mm)
Practical RPM range: 1,500-8,000
®
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