Rotax 912-UL User Manual

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page 10 - 5
Jan. 01/2007
Effectivity: 912 ULS / S
OM Edition 1 / Rev. 0
BRP-Rotax
10.1.2 ) Operating speeds and limits (912 ULS / S)
1. Speed:
Take-off speed ............................ 5800 1/min (5 min.)
Max. continuous speed ............... 5500 1/min
Idle speed ................................... approx. 1400 1/min
2. Performance (ISA): (International Standard Atmosphere)
Take-off performance .................. 73,5 kW at 5800 1/min
Max. continuous performance ..... 69 kW at 5500 1/min
3. Acceleration:
Limit of engine operation at zero gravity and in negative "g" condi-
tions
max. ............................................ 5 seconds at max. -0,5 g
4. Oil pressure:
max. ............................................ 7 bar
■ CAUTION: For a short period admissible at cold start.
min. ............................................. 0,8 bar (12 psi) (below 3500 rpm)
normal ......................................... 2,0 ÷ 5,0 bar (29 ÷ 73 psi) (above
3500 rpm)
5. Oil temperature:
max. ............................................ 130 °C ................. (266 °F)
min. ............................................. 50 °C.................... (120 °F)
normal operating temperature ..... approx. 90 ÷ 110 °C(190÷230 °F)
6. Coolant:
See Operating media Chapter 10.2.1
- In use of conventional coolant:
Coolant temperature: (coolant exit temperature)
max.....................................................120 °C (248 °F)
Cylinder head temperature:
max.....................................................135 °C (275 °F)
Permanent monitoring of coolant temperature and cylinder head
temperature is necessary.
- In use of waterless coolant:
Cylinder head temperature:
max.....................................................135 °C (275 °F)
Permanent monitoring of cylinder head temperature is necessary.
7. Engine start, operating temperature:
max. ............................................ 50 °C ................... (120 °F)
min. ............................................. -
25 °C .................. (- 13 °F)

Rotax 912-UL Specifications

General

Displacement	1211 cc
Bore x Stroke	79.5 mm x 61 mm
Compression Ratio	9.0:1
TBO (Time Between Overhaul)	2000 hours
Engine Type	4-cylinder, 4-stroke
Power Output	80 hp
Cooling System	Liquid/air-cooled
Fuel Type	Avgas 100LL or unleaded automotive gasoline
Oil Capacity	3 liters
Fuel System	2 carburetors
Oil System	Dry sump forced lubrication with separate oil tank
Reduction Gear Ratio	2.43:1
Max Continuous Power	75 hp (56 kW)