The engines are characterised by a robust and elaborate construction, they are made for those scale model enthusiasts who want to give their model a unique character, and thus stand out from others. UMS has developed a series of five petrol engines and three glow ignition engines, so that the entire spectrum of the required types could be covered. Especially the small-volume engines make it possible to motorise comparatively smaller scale models, especially warbirds, true to the original.

The petrol engines have an electronic ignition system which is operated with a LiPo battery, a petrol/oil mixture is used as fuel. All engines are delivered including silencer.

Please note that the ignition system for this engine is supplied separately and is not integrated into the engine. This therefore requires space in the fuselage.

Technical data:
- Cylinder: 5
- Running gear: ABC
- Carburettor: UMS standard
- Displacement: 55 ccm
- Bore: 23,7 mm
- Stroke: 25,0mm
- Power: 7,5 kgf thrust/thrust
- Speed (rpm): 1000-6000
- Length: 142 mm
- Width: 201 mm
- Height: 201 mm
- Weight: 1,8 Kg
- Propeller recommendation: 22 x 8
- Muffler: Ring muffler incl.
- Ignition: Electronic
- Spark plug: 1/4-32
- Fuel: Petrol/Oil mixture