The O.S. Engine 91HZ represents the pinnacle of helicopter engine technology, crafted with insights from world-class pilots to ensure top-tier performance in F3C competitions. Building on the success of its predecessor, the 91SZ-H, this engine introduces several enhancements that cater to the demands of competitive flying.
The 91HZ is engineered for those who demand precision and reliability. Its narrow heat sink head design allows it to fit snugly within cooling shrouds, ensuring optimal thermal management without sacrificing power. The dual heat sinks—one on the head and another on the crankcase—effectively dissipate heat, maintaining performance even under the most demanding conditions.
Equipped with the new 61B carburetor, the 91HZ takes consistency to new heights. An insulating ring prevents crankcase heat from affecting carb settings, while multiple O-ring seals eliminate air leaks, ensuring stable power delivery. The in-flight control of the needle valve further enhances the engine's smooth and consistent operation.
The O.S. Engine 91HZ is an ideal choice for competitive pilots seeking a reliable and high-performance engine. Its advanced features and meticulous design make it suitable for both seasoned competitors and hobbyists looking to elevate their flying experience.
Copyright © 2008-2025 rcjaz.com All rights reserved
