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ROTAX 912 ULS

Engine 912 ULS

Description

4- stroke, 4-cylinder liquid/air cooled engine with opposed cylinders, dry sump forced lubrication with separate oil tank, automatic adjustment by hydraulic valve tappets, integrated reduction gearbox.

non certified
conforms to ASTM 2339-04 LSA

Download

  1. Data sheets
  2. Performance diagrams
  3. Drawings

Technical data

Version Performance Torque Max RPM
  kW ft. lb. 1/min Nm ft. lb. l/min l/min
912 ULS 73.5 100 5800* 128 94 5100 5800
Bore Stroke Displacement Fuel
84 mm 3.31 in 61 mm 2.4 in 1352 cm³ 82.6 cu in. min. MON 85 RON 95**
min. AKI 91**

* - max 5 min
** - leaded, unleaded, AVGAS 100 LL or Ethanol 10
see Service Instruction SI-912-016/914-019 „Selection of suitable operating fluids”, current issue

WEIGHT kg lb
engine with gearbox i = 2.43 56.6 124.5
overload clutch 1.7 3.7
radiator 1.0 2.2
oil radiator 0.5 1.1
2 air filters 0.3 0.66
airbox 1.3 2.86
exhaust system 4.0 8.8
air guide baffle 0.8 1.76
engine suspension frame 2.0 4.4
vacuum pump 0.8 1.8
hydraulic governor 2.7 5.9
external alternator 3.0 6.6

Standard configuration

version ULS 2
(for fixed pitch propeller)

  1. integrated reduction gearbox i = 2,43
  2. overload clutch for reduction gearbox
  3. electric starter standard + starter relay
  4. electronic dual ignitron system
  5. ignitron cover
  6. R.F.I. suppression
  7. regulator-rectifier
  8. 2 carburetors
  9. mechanical fuel pump
  10. expansion tank
  11. exhaust sockets In stainless steel
  12. oil filter, oil tank, without tubes
  13. coolant pump and internal hoses
  14. 2 sensors for cylinder head temperature
  15. 1 sensor for oil temperature
  16. 1 oil pressure sensor (current type, Honeywell)

version ULS 3
(for „constant speed” propellers, controlled hydraulically)

Configuration same as for version 2 additionally equipped with:

  1. drive for hydraulic governor and cover for sealing of governor flange

Download - technical instructions

Here you can free download current issues of main technical instructions. For other technical publications see DOCUMENTATION.

The documents are available and may be downloaded in Adobe pdf format. If you encounter difficulties with the pdf-files, make sure to have the latest updates installed for your version of Adobe® Reader®.

  1. Installation Manual
  2. Operators Manual
  3. Maintenance Manual (Line)
  4. Drawings – electronic version of DMU is available on CDrom at our company. Please call us for details.
ROTAX 912 ULS