UMS 75cc Gas  5 Cylinder Radial 4 Stroke Engine

UMS 75cc Gas 5 Cylinder Radial 4 Stroke Engine

UMS 9-115cc Gas - 9 Cylinder Radial 4 Stroke Engine

UMS 9-115cc Gas - 9 Cylinder Radial 4 Stroke Engine

UMS 7-90cc Gas - 7 Cylinder Radial 4 Stroke Engine

The UMS 7-90 is a very reliable radial engines which uses gas 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.

$2,190.00
In stock
SKU
UMS7-90

The UMS 7-90 is a very reliable radial engines which uses gas 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.

 

  • 7 cylinder radial configuration absolutely stunning looks and realism
  • 90cc 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 bell cranks 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 87-110 octane gasoline with 32:1 gas/oil mixture

ums 7

specification1

 

specification2

  Standard Metric
Type 4-Stroke Petrol SPARK IGNITION
CYLINDER 7 (ABC TYPE) 7 (ABC TYPE)
CAPACITY (CU. IN) 5.5 90CC
Bore 0.98" 25.1MM
Stroke 1.02" 26MM
Thrust* 20.9lbf @ 24x10 Menz prop. 9.5kgf @ 24x10 Menz prop.
Power (HP) 6 6
Rotation (RPM) 1000 - 6000 1000 - 6000
Weight 6.1lbs 2.8kg incl.(silencer )
Engine Diameter 9" 230MM
Engine Length 6.7" 170MM
Propeller** 24x8, 24x10, 24x12 24x8, 24x10, 24x12
Muffler Type Collector Ring Collector Ring
Plug Type 1/4-32 RcExl 1/4-32 RcExl
Carburetor WALBRO WT-621 WALBRO WT-621

 

7-90CC 7CYLINDER  TECHNICAL SPECIFICATION

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You're reviewing:UMS 7-90cc Gas - 7 Cylinder Radial 4 Stroke Engine