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Name: UMS 7-50cc Radial 4-stroke Gas Engine (3.3hp, 2050gr)
Brand: UMS
SKU: UMS7-50
Price: 1779.00 EUR
Availability: InStock

The place to go for Large RC Model Airplanes.

UMS 7cylinder 50cc Radial 4-stroke Gas Engine

UMS 7cylinder 35cc Radial 4-stroke Glow Engine

UMS 7-50cc Radial 4-stroke Gas Engine (3.3hp, 2050gr)

UMS

UMS7-50

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Description
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Including our unique BigPlanes Starter or Maintenance package.

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

Output Power	3.3hp
Propeller	17x10 .. 20x8
Weight	2050g (excl./incl.mufflers)
Delivery includes: 1/4-32 spark plugs, ignition and ringmuffler.

Bigplanes is the importer of UMS engines for the EU and beyond.

We offer a complete after sales service for the UMS engines.

In-House maintenance:

All maintenance of the UMS gas engines is done in-house by Bigplanes. This also includes a warranty service. Bigplanes has over 45 years of gas engine maintenance experience and as such can perform the maintenance at a very high level.

We have all tools available to perform the maintenance needed like measuring the cylinder pressure, thrust, fuel consumption, ignition, wire and sensor testing, temperature check of each cylinder and an overall engine check by using thermal imaging etc.. All maintenance is done using a robust engine Test-Bench with a metal protective safety cage for the propellor.

Technical Specification:
Displacement (Cylinder Inhoud)	50	ccm
Output Power (Vermogen)	3.3	hp
Output Power (Vermogen)		kW
Carburetor
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
Weight:
Engine (including muffler)	1750	gram
Muffler	-	gram
Ignition	480	gram
Documentation:
User Manual (Gebruikers Handleiding)
Approx. Fuel Flow	cc/min (full throttle)
Link to manufacturer
Links:
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