The UMS 7-50 is a very reliable radial engines which uses gasoline as fuel. UMS has a ton of experience building radial engines. It has brought more than 2000 engines to market so far. The design and construction are upper class leading to a outstanding realibility of these engines. They are easily servicebale. All critical parts are easily accessible.

In addition we at Tomahawk Aviation offer a full after sales service support for these engines here in Europe, fast, competent and reliable.

Key features

• 7-cylinder radial configuration—absolutely stunning looks and realism
• 4-stroke
• Midsize 50cc displacement
• Comes complete with exhaust collector ring and electronic ignition - Please note that the ignition of this motor is a separate box and is not integrated on the back of the motor. Therefore it will need some space in the fuselage.
• User-friendly choke and throttle bellcranks included—makes installation and operation easy
• Made from aluminum or bar stock where appropriate and CNC-machined—accurate and repeatable specifications each and every time
• Cylinder head and crankcases produced from aircraft grade alloys
• Heavy-duty double bearing crankshaft
• Billet aluminum pistons and hardened steel rings
• Hard-chromed and lapped cylinder bores
• Hardened steel cams
• Burns gas fuel