English

BigPlanes

Name: UMS 7-90cc Radial 4-stroke Gas Engine (6hp, 3200gr)
Brand: UMS
SKU: UMS7-90
Price: 2059.00 EUR
Availability: InStock

The place to go for Large RC Model Airplanes.

UMS 7cylinder 90cc Radial 4-stroke Gas Engine

UMS 7-90cc Radial 4-stroke Gas Engine (6hp, 3200gr)

UMS

UMS7-90

Add to cart

Description
More

Including Fuel Pump and our unique BigPlanes Starter or Maintenance package.

UMS 7-Cylinder 90cc 4-stroke Radial Gas Engine Including ring muffler.

Output Power	6hp
Propeller	26x10 .. 24x12
Weight	3200g (excl./incl.mufflers)
Delivery includes: 1/4-32 spark plugs, ignition and ringmuffler, RCEXL Fuel Pump.

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)	90	ccm
Output Power (Vermogen)	6	hp
Output Power (Vermogen)		kW
Carburetor	WT-793A	Walbro
Static Thrust		kg
Speed Range (Toerental)	1200 - 6000	rpm (omw/min)
Propeller	26x10 .. 24x12	inch
Ignition power supply (Spanning ontsteking)	4.8 - 8.4	Volt
Spinner mount thread	M4	mm
Crankshaft mount thread	10	mm
Gas/Oil mix ratio (Brandstof verhouding)	30 : 1	gas : oil
Weight:
Engine (including muffler and fuel pump)	3000	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 90cc 4-Stroke Gas / Petrol Radial Engine

The UMS 7-90 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 90cc 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-7-90cc 4-stroke radial gas engine from UMS is especially developped for scale models.

Dimensions:

Diameter of the engine is 23 cm.