ROTECH MOTOR LTD.

912 ULS

 

Rotax® 912ULS DCDI

 

 

4 cylinder, 4 stroke liquid/air cooled engine with opposed cylinders, dry sump forced lubrication with separate 3l (.8 gal US) oil tank, automatic adjustment by hydraulic valve tappet, 2 CD carburetors, mechanical fuel pump, electronic dual ignition, electric starter, integrated reduction gear i= 2.43.

 

 

Version

Performance

Torque

Max RPM

 

kW

HP

RPM

Nm

ft. lb.

RPM

RPM

912 ULS2

69.0

95

5500

128

94

5100

5800

Max 5 min (take-off)

73.5*

100*

5800*

* with Rotax airbox & exhaust system

 

 

 

 

 

Bore

Stroke 

Displacement 

Compression 
Ratio 

84 mm

3.31 in.

61 mm

2.4 in.

1352 cm3

82.6 cu. in.

10.5:1

 

 

 

 

Detailed Info

The 100HP* 912 ULS aircraft engine is based on the field proven 81 HP Rotax 912 UL design.

The Rotax 912 ULS is not simply an 81 HP 912 UL with different pistons. 
Through careful research and development, Rotax has made many design changes and improvements to obtain performance increases while maintaining the same external dimensions.

 

 

 

 

 

 

 

Options

912 ULS3

Suitable for 'Constant Speed' propellers.
Includes:
drive for hydraulic variable speed governor 
Woodward variable speed governor (part# 886 730) 
Slipper clutch for reduction gearbox.

912 ULS4

Suitable for 'fixed pitch' propellers
Same as Rotax 912 ULS2 but fitted with propeller shaft that would allow the engine to be converted to a 912 ULS3 for use with a constant speed propeller.

 

 

 

 

 

 

Detailed Info

Engine data sheet (PDF)

Installation Weights

Fuel Consumption

 

 

 

 

 

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