The UMS radial engine with 90ccm and 7 cylinders is a high-quality petrol engine for RC models with high demands.

The manufacturer UMS offers a unique range of radial motors.

The motors are characterized by a robust and elaborate construction, they are made for those scale model lovers who want to give their model a unique character and stand out from the rest. UMS has developed a series of five petrol engines and three glow ignition engines each, covering the entire spectrum of types required. Especially the small volume engines make it possible to produce smaller scale models, especially warbirds, with true originality.

The petrol engines are equipped with an electronic ignition system which is operated by a LiPo battery, petrol/oil mixture is used as fuel. The glow-ignition engines are pre-annealed with an external battery, and commercial model construction fuel based on methanol is used as fuel. All engines are delivered with silencers.

Cylinder: 7
Tread set: ABC
Carburetor: WT 621
cubic capacity: 90 ccm
Bore hole: 25.0 mm
Stroke: 26.0 mm
Power: 6,0 HP/HP
Speed (rpm): 1200-6000
length: 20,0 cm
Width: 23,0 cm
height: 23,0 cm
Weight: 3,2 kg
Recommended propellers: 26 x 10,24 x 12
Silencer: Ring muffler incl. silencer
Ignition: Electronic
Spark plug: CM-6
Fuel: Petrol/oil mixture