The UMS radial engine with 35 cc and 7 cylinders is a high-quality glow plug model engine for RC aircraft with high demands. The manufacturer UMS offers a unique range of radial engines. The engines are characterized by a robust and elaborate construction and are designed for scale model enthusiasts who want to give their model a unique character and stand out from the rest. UMS has developed a series of five gasoline engines and three glow plug engines to cover the entire spectrum of required types. In particular, the small-displacement engines allow for the faithful motorization of comparatively smaller scale models, especially warbirds. The gasoline engines feature an electronic ignition system powered by a LiPo battery, and a gasoline/oil mixture is used as fuel. The glow plug engines are preheated with an external battery, and commercially available methanol-based model fuel is used as fuel. All engines are delivered with a silencer included.