Description

The 7-cylinder 77CC radial engine is a meticulously designed powerplant tailored for scale model aircraft enthusiasts who demand authenticity, performance, and reliability. Its 7-cylinder radial layout provides an accurate and visually striking appearance reminiscent of classic aviation engines, making it perfect for museum-quality replicas, RC warbirds, and other detailed scale projects.

With a 77CC displacement, this engine delivers ample power while maintaining a lightweight profile suitable for smaller-scale models. It arrives fully assembled and ready to run, equipped with essential components such as an exhaust collector ring, spark plugs, a reliable electronic ignition system, and a durable engine mount. The inclusion of user-friendly choke and throttle bellcranks simplifies installation and operation, allowing hobbyists to focus on flying and maintenance with ease.

Precision manufacturing is a standout feature, as the engine’s core components are CNC-machined from aluminum or bar stock to ensure exacting tolerances and consistent performance. The cylinder heads and crankcases utilize aircraft-grade aluminum alloys, providing a combination of strength and weight reduction critical for maintaining optimal aircraft balance and handling characteristics.

Durability is emphasized through a heavy-duty double-bearing crankshaft that ensures stable high-RPM performance and reduces mechanical wear. The pistons are crafted from billet aluminum and paired with hardened steel rings to optimize combustion efficiency, reduce friction, and extend engine life. The cylinder bores are hard-chromed and carefully lapped to enhance wear resistance and maintain peak performance. Hardened steel cams provide precise valve timing and long-term reliability, even under demanding flight conditions.

Compatible with widely available 87–110 octane gasoline and operating on a 32:1 gas-to-oil mixture, this engine offers versatility across different fuel types and environments. It embodies a perfect blend of authentic radial engine aesthetics, modern engineering precision, and dependable power output. Whether for flight or static display, the 7-cylinder 77CC radial engine is a superior choice for hobbyists and professionals seeking high-quality miniature radial propulsion.