Thermal engine O.S. Engines GT-15 Gasoline

O.S. GT-15 Gasoline: the power of gasoline engine for aeromodelling

The O.S. GT-15 Gasoline marks an important milestone in the evolution of glow engines for radio-controlled aircraft.

Developed by O.S. Engines, a globally recognized Japanese manufacturer known for the quality of its engines, this 2-stroke engine with 14.95 cm³ was designed to offer the performance of a glow engine while benefiting from the numerous advantages of gasoline fuel.

With its excellent efficiency, low consumption, and particularly smooth operation, the GT-15 appeals to both recreational pilots and experienced aeromodellers looking to benefit from a reliable, economical, and high-performance engine.

High-performance gasoline engine

With a displacement of 14.95 cm³, the GT-15 develops approximately 2.1 horsepower at 9,000 rpm and offers an operating range between 2,000 and 11,000 rpm.

Its significant torque allows it to drive large-diameter propellers, ensuring excellent thrust from low revs while maintaining a smooth and controllable power increase.

Technical specifications

• Type: 2-stroke gasoline engine
• Displacement: 14.95 cm³
• Power: 2.1 hp at 9,000 rpm
• Operating range: 2,000 to 11,000 rpm
• Engine weight: 610 g
• Muffler weight: 178 g
• Recommended propellers: 13x8 to 15x8
• Fuel: unleaded gasoline mixed with quality 2-stroke oil according to O.S. recommendations.

Advantages of gasoline engine

Unlike engines running on methanol, the GT-15 uses a much more economical and readily available gasoline/oil mixture. This engine offers several advantages appreciated by hobbyists:

• reduced consumption;
• higher autonomy;
• less expensive fuel;
• stable settings over time;
• simplified maintenance.

The engine is equipped with an electronic ignition module ensuring precise spark at all speeds, promoting easy starts and consistent combustion.

A design by O.S. Engines

Like all O.S. engines, the GT-15 benefits from extremely precise machining and high-quality components. Its carburetor specially developed by O.S. provides a progressive response to acceleration and facilitates adjustments, even for pilots new to gasoline engines.

The official documentation recommends using regular unleaded gasoline mixed with suitable 2-stroke oil. After a properly conducted break-in, the engine offers excellent operational stability and longevity.

Included equipment

The O.S. GT-15 Gasoline comes ready to be installed with the main accessories necessary for its operation:

• O.S. original muffler;
• spark plug;
• electronic ignition module;
• ignition sensor;
• mounting accessories and manufacturer's instructions.

For which RC airplane models?

Thanks to its excellent balance between weight and power, the GT-15 is perfectly suited for many medium-sized radio-controlled airplanes, whether they are aerobatic models, warbirds, scale models, or sport planes. Its significant torque allows for excellent power reserve while benefiting from particularly low fuel consumption.

Operating on gasoline also appeals to pilots looking for greater flight autonomy and reduced operating costs compared to traditional glow fuels.

Why choose the O.S. GT-15?

The GT-15 Gasoline benefits from all the expertise of O.S. Engines, a leading brand in the modeling world for several decades. Its quality of manufacture, reliability, ease of adjustment, and excellent performance make it a particularly popular engine among aeromodellers.

Even today, it remains a safe choice for those who want to equip their radio-controlled airplane with a powerful, economical, and long-lasting gasoline engine.

Key Points to Remember

Displacement: 14.95 ccBore: 27.7 mmStroke: 24.8 mmPower: 2.4 hp at 15,000 rpmOperating RPM Range: 2,000 to 15,000 rpmRecommended Propellers (Sport · Aerobatic · Model): 13×8 to 13×11, 14×8 to 14×10, 15×8Weight: 631 g