O.S. Engine OSMG1977 91HZ-PS 3D Ring Helicopter Engine  [OSMG1977]

Unleashing the Power of the O.S. Engine 91HZ-PS 3D Ring

The O.S. Engine 91HZ-PS 3D Ring is a standout performer in the world of helicopter engines, revered by RC enthusiasts for its outstanding power and precision. This engine has been engineered to elevate 3D flying capabilities, making it a top choice for competitive pilots who demand reliability and performance.

Precision Engineering for Optimal Performance

At the heart of the 91HZ-PS is a redesigned horizontal regulator and the PD-08 fuel pump, ensuring a consistent fuel supply under any flight condition. This innovative setup allows pilots to push their helicopters to the limits without worrying about fuel starvation or erratic engine behavior.

Enhanced Torque and Vibration Control

The engine's piston and crankshaft have been meticulously designed to minimize vibration while maximizing torque across the entire RPM range. This results in smoother operation and increased control, which are crucial for executing complex 3D maneuvers.

Compact Design with Superior Cooling

The narrow profile of the heat sink head allows the engine to fit snugly within cooling shrouds, maintaining optimal temperatures without sacrificing cooling efficiency. Additionally, the 61B-PII carburetor features a thermo insulator to prevent heat transfer, ensuring a stable fuel/air mix.

The O.S. Engine 91HZ-PS 3D Ring is ideal for advanced pilots seeking to enhance their 3D flying experience. Its precision engineering and robust performance make it a valuable addition to any competitive setup.