Esqual VM-1C - Engine and Propeller Specifications

Arsi AB – Esqual
www.arsi.se
FLIGHT & OPERATION MANUAL ESQUAL VM-1
Page 13 of 54
2.1 ENGINE TYPE
A. Rotax 912 ULS Engine
Dimensions and Weights
Bore: 84 mm
Stroke: 61.0 mm
Displacement: 1,352.2 cc
Cylinders: 4 cyl. horizontally opposed (boxer)
Compression Ratio: 10.5:1
Direction of rotation on prop shaft: Counter-clockwise, looking at p.t.o. side of engine
Engine Curb Weight:
76 Kg complete with engine oil, exhaust and
starter motor.
Reduction gear 2,43:1
Normal Equipment
Ignition Unit: Ducati Ddual CDI
Ignition Timing: 4° up to 1000 RPM above 26°
Spark Plugs: DCPR8E
Electrode Gap: 0,7 – 0,8 mm
Generator: 13.5 V / 250 W DC @ 5500 rpm
DC Output: 250 W
Carburetor: 2 CD
Fuel Filtration: 0.1 mm (100 Micron) maximum particle size.
Starting System: Electric starter
Cooling System:
Liquid-cooled cylinder heads, air-cooled cylinder
2.2 FUEL CONSUMPTION
A. Rotax 912 ULS Engine
At take-off performance
27.0 lts/h
At maximum continuous performance
25.0 lts/h
At 75% continuous performance (cruise) 18.5 lts/h
Specific consumption at maximum continuous performance
285 g/kWh
2.3 PERFORMANCE DATA
A. Rotax 912 ULS Engine
Take-off performance (73.5 kW) at 5.800 rev/min.
Maximum continuous performance
(69.0 kW) at 5.500 rev/min.
Acceleration
5 seconds maximum at –0.5 G