Test Run UMS 125cc Gas / Petrol 5 Cylinder Radial 4 Stroke Engine T-UMS5-125

The UMS 5-125 is a very reliable radial engines which uses gas fuel. UMS has a ton of experience building radial engines. The design and construction are upper class leading to a outstanding realibility of these engines. They are easily servicebale. All critical parts are easily accesisble.

Key Features

• 5 cylinder radial configuration absolutely stunning looks and realism
• 125cc displacement perfect for scale project 
• Comes complete with exhaust collector ring,spark plugs,electronic ignition, and engine mount ready to run 
• 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 87-110octane gasoline with 32:1 gas/oil mixture

Technical information  

• Cylinder:                   5 
• Cylinder capacity:     125cc
• Bore:                         31mm
• Stroke:                      33mm
• Power:                      15kg of thrust
• RPM Range:            1000-6000
• Weight:                     3.9kg incl.(ignition coil and silencer)
• Width:                       265mm
• Lenght:                     166mm
• Propeller:                  26 x 10 1000 - 5900 RPM 2 Blade Menz's
• Propeller:                  27 x 12   900 - 5500 RPM 2 Blade Menz's
• Propeller:                  25 x 10   700 - 5200 RPM 3 Blade Biela
• Muffler type:              Collector Ring
• Plug type:                  CM-6 / 10mm RECXL
• Carburetor:                WT-621
• Petrol/Oil Mix:           1:32 2 stroke oil