UMS 55cc Gas 5 Cylinder Engine

The UMS 5-55 is a very reliable radial engines which uses gas 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 an outstanding reliability of these engines. They are easily serviceable. All critical parts are easily accessible.

• 5-cylinder radial configuration—absolutely stunning looks and realism
• 4-stroke
• Midsize 55cc displacement
• Comes complete with exhaust collector ring and electronic ignition —one-box purchase for a ready-to-mount-and-run engine
• 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

Technical information 

• Cylinder:                   5 
• Cylinder capacity:     55cc
• Bore:                         23.7mm
• Stroke:                      25mm
• Power:                      7.5kg of thrust
• RPM Range:            1200-6000
• Weight:                     2.54Kg incl.(ignition coil and silencer)
• Width:                       201mm
• Lenght:                     142mm
• Propeller:                  21 x 10 1000 - 6000 RPM 2 Blade Menz's
• Propeller:                  22 x 8   1000 - 5700 RPM 2 Blade Menz's
• Propeller:                  20 x 10   700 - 5300 RPM 3 Blade Biela
• Muffler type:              Collector Ring
• Plug type:                  1/4-32 RCEXL
• Carburetor:                UMS Carburetor
• Petrol/Oil Mix:           1:32