O.S. Engine 61RX-H Precision Nitro Helicopter Powerplant  [OS-17920]

Rotor-Ready Performance from the O.S. Engine 61RX-H

Hobby pilots who require steady power and accurate throttle response will find the O.S. Engine 61RX-H delivers the control they need. The engine is engineered to offer reliable starting and a long service life for those who fly often.

Built for Smooth Running

The design of the 61RX-H focuses on balance and tight manufacturing tolerances so power comes on cleanly and predictably. Its glow plug ignition supports consistent starts and dependable operation under heavy loads, while the rugged build resists wear during repeated use.

Optimised for Precision Flying

The 61RX-H stands out when precision is required, with throttle response and a power curve that suit technical aerobatics. Its compact dimensions and weight distribution help maintain helicopter agility during complex manoeuvres.

Where It Fits Among Other Engines

Compared to other engines in its class, the 61RX-H is often chosen for a smoother power band and efficient fuel consumption. It makes a practical step up from basic engines for pilots seeking more controllable performance.

For regular flyers and aerobatic pilots wanting dependable nitro output, the O.S. Engine 61RX-H is a solid, well engineered choice that balances longevity with usable power.