• Beschrijving
  • Meer

Including unique BigPlanes Starter or Maintenance package. 

UMS 7-Cylinder 50cc 4-stroke Radial Gas Engine Including ring muffler.

 Output Power  



 17x10 .. 20x8


 2050g (excl./incl.mufflers)  

  Delivery includes: 1/4-32 spark plugs, ignition and ringmuffler.

Technical  Specification:  
 Displacement                   (Cylinder Inhoud)  50  ccm                   

 Output Power                           (Vermogen) 

 3.3  hp


 Static Thrust    kg
 Speed Range                             (Toerental)  1000 - 6300  rpm (omw/min)    
 Propeller  17x10 .. 20x8  inch 
 Ignition power supply (Spanning ontsteking)  4.8 - 8.4  Volt
 Spinner mount thread  n.a.  mm 
 Crankshaft mount thread  8  mm 
 Gas/Oil mix ratio     (Brandstof verhouding)  40 : 1  gas : oil
 Engine                           (including muffler)  1750  gram
 Muffler  -  gram 
 Ignition  480  gram 
 User Manual         (Gebruikers Handleiding)  
 Approx. Fuel Flow  cc/min (full throttle)
 Link to manufacturer  
 Spare Parts


Spark plugs are of type: 1/4-32

7-Cylinder 50cc 4-Stroke Gas / Petrol Radial Engine

The UMS 7-50 is a very reliable radial engines which uses gas fuel. UMS has a lot 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.

Key Features

  • 7-cylinder radial configuration—absolutely stunning looks and realism
  • 4-stroke
  • Midsize 50cc displacement
  • Comes complete with exhaust collector ring —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
  • Burns gas/petrol fuel


The UMS-7-50cc 4-stroke radial gas engine from UMS is especially developped for scale models. 


Diameter of the engine is 18.5 cm.



Gerelateerde Producten