Powerful, reliable, upgradable...

The Rotax 912 ULS is the best choice for your sport aircraft

ROTAX 912 ULS main specifications

  • 4-stroke engine specially developed for recreational aircraft
  • 4 horizontally opposed cylinders, "boxer" configuration
  • Free air cooled cylinders, liquid cooled cylinder heads
  • 8 valves, automatic adjustment by hydraulic valve tappet
  • Dual Capacitor Discharge Ignition (DCDI) with RFI noise suppression
  • Two Bing Constant Depression (CD) carburetors
  • Various liquid and oil radiators available
  • Many option available such as: Vacuum pump, external alternator
  • Time Between Overhauls (TBO): 2,000 hours

Also in Equipment:

PERFORMANCE

Maximum Power* (5 minutes)
100HP / 73.5KW @ 5800 RPM
Maximum Power (sustained)
95HP / 69.0KW @ 5500 RPM
Maximum Torque
94ft-lb / 128NM @ 5100 RPM

*100HP maximum power when optional air box and tuned exhaust are installed.

COMBUSTION CHAMBERS

Bore
3.31" / 84mm
Stroke
2.40" / 61.0mm
Displacement
82.6cu.in. / 1352cm³
Compression ratio
10.5:1

WEIGHT

Engine with carburetors
124.7lbs / 56.6Kg
Exhaust System
8.8lbs / 4.0Kg
Air Box
2.9lbs / 1.3Kg
Air Filter
0.7lbs / 0.3Kg
Liquid Radiator
2.2lbs / 1.0Kg
Oil Radiator
1.1lbs / 0.5Kg
Regulator-Rectifier
0.2lbs / 0.1Kg
Installed Weight
140.6lbs / 63.8Kg
Weight/power ratio
1.41lbs/HP / 0.87Kg/KW