Arsi AB – Esqual
www.arsi.se
FLIGHT & OPERATION MANUAL ESQUAL VM-1
Page 14 of 54
2.4 FUEL & LUBRICANT
A. Rotax 912 ULS Engine
Fuel:
Automotive unleaded gasoline (RON 95/98).
The use of aviation gasoline (AVGAS 100LL) produces, due to its higher lead
content, the wear of the valve seats. Moreover, the sediments in the combustion
chamber will increase and the lead sediments in the lubricating system will also
increase. Therefore, you should only use AVGAS if you encounter problems with
the fuel being steamed or if any other fuel types are not available.
Lubricant:
We recommend using AeroShell Oil Sport Plus 4 or oil recommended in
The Rotax Manual.
Oil capacity
3 L. (minimum 2 L)
Oil consumption 0.1 L/h (max.)
2.5 OPERATING SPEEDS & LIMITS
A. Rotax 912 ULS Engine
Take-Off Speed:
5.800 rev/min. (5 min.)
Maximum Continuous Speed:
5.500 rev/min.
Idle Speed:
Ca 1.400 rev/min.
Oil Pressure:
Maximum:
7 bar
Attention: For a short period admissible at cold start
Minimum:
0.8 bar (12 psi) (below 3.500 rev/min.)
Normal:
2.0 - 5.0 bar (29 - 73 psi) (above 3.500 rev/min.)
Oil Temperature:
Maximum
130° C (266°F)
Minimum
50° C (120°F)
Normal
90° - 110° C (190° - 230°F)
Cylinder Head Temp. Maximum:
135°C (284°F) reading at observation point of the hottest
cylinder head, either no. 2 or no. 3
Engine start,
operating temp.
Maximum:
50° C (120°F)
Minimum:
-25° C (-13°F)
Fuel Pressure
Maximum:
0.4 bar (5.8 psi)
Minimum:
0.15 bar (2.2 psi)
Exhaust Gas Temp.
Max. contin: 800°C
Max. 5 min.: 850°C
Max. T/O:
880°C
2.6 PROPELLER
C. Duc Swirl inconell
The Esqual is equipped with a Duc Swirl inconell, a three blade carbon fiber, ground adjustable
propeller.
Diameter:
1660mm
Pitch:
Ground adjustable (25,5 (+ -1) deg, measured 25% in from tip)
Weight:
3,6kg
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