UMS radial-engine, 7 cylinder 90ccm, gas

€1,999.00 * €2,139.00 * (6.55% Saved)

Prices incl. VAT plus shipping costs

Delivery time on request

  • 41004
The UMS 7-90 is a very reliable radial engines which uses gasoline as fuel. UMS has a ton of... more

The UMS 7-90 is a very reliable radial engines which uses gasoline 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 a outstanding realibility of these engines. They are easily servicebale. All critical parts are easily accessible.

In addition we at Tomahawk Aviation offer a full after sales service support for these engines here in Europe, fast, competent and reliable. 

Key features

  • 7-cylinder radial configuration—absolutely stunning looks and realism
  • 4-stroke
  • Midsize 90cc 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
  • Burns gasoline fuel
  • Test results: 4700-4800 rpm with Fiala 26x10 Propeller
  • Fuel pump included in the set
All technical information at a glance: more
Zylinder: 7
Cylinder type: ABC
Carburetor: WT 621
Cylinder capacity: 90 ccm
Bore: 25,0 mm
Stroke: 26,0 mm
Power: 6,0 PS/HP
Rotation (RPM): 1450-5600
Lenght: 20,0 cm
Width: 23,0 cm
Hight: 23,0 cm
Weight: 3,2 kg
Propeller: 24 x 10
Muffler type: collector ring incl.
Ignition: electronic
Plug type: 1/4-32 RECXL
Fuel: petrol/oil mix