Description

The UMS 9-115CC is a high-performance radial engine designed specifically for aviation enthusiasts and UAV professionals who demand power, reliability, and realism in their aircraft. Powered by gasoline, this 9-cylinder radial engine offers exceptional performance and long-term dependability. With a rich legacy in radial engine manufacturing, UMS has successfully delivered over 2,000 engines worldwide, earning a strong reputation for quality and innovation in the field.

The UMS 9-115CC is engineered with a 115cc displacement, making it an ideal choice for scale model aircraft and large-scale UAV applications. Its design reflects a perfect blend of traditional radial aesthetics and modern engineering. The 9-cylinder configuration not only enhances the engine’s visual authenticity but also ensures smooth and balanced operation. The engine comes fully equipped with an exhaust collector ring, electronic ignition system, spark plugs, and a durable engine mount—everything needed to get airborne quickly.

Ease of use and maintenance are core features of this engine. It includes user-friendly choke and throttle bellcranks, simplifying both installation and operational control. Designed with CNC-machined aluminum and bar stock components, the engine achieves exceptional precision and consistency. Critical components like the cylinder heads and crankcases are made from aircraft-grade alloys for strength and durability. The double-bearing crankshaft enhances stability and lifespan, while billet aluminum pistons with hardened steel rings ensure smooth combustion.

To further improve performance and longevity, the engine uses hard-chromed and lapped cylinder bores, along with hardened steel cams for reliable valve timing. Compatible with 87–110 octane gasoline and a 32:1 gas/oil mixture, the UMS 9-115CC delivers optimal power and efficiency under a wide range of conditions. This engine is an exceptional solution for serious builders and UAV professionals seeking a powerful, realistic, and serviceable radial engine.