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Schematic electrical system (electrical starter & instruments)
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Engine cooling system
Rotax 503 cooling system
The Rotax 503 engine is aircooled by use of own fan. Cold air enters through the opening on the top
engine cover and is forced to spread over the engine fins. The air then blown out of the engine com-
partment just below the firewall.
Rotax 582 cooling system
The Rotax 582 engine is watercooled. The cooling fluid circulates through the hoses via twin cooling
circuit. For that an integrated pump is used. When the engine is still cold (cold start), the thermostat
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allows for the fluid to circulate around the cylinders only. Later, when the engine warms-up the ther-
mostat switches cooling mode and the cooling fluid passes through the radiator as well.
The whole system is pressurised with a pressure valve located on top of the radiator. The overflow
tank fluid level must always be inside designated limits!
The manufacturer recommends use of cooling fluids used in car industry diluted in such a manner
that it withstands temperatures as low as - 20° C.
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Aircraft and systems on board
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51
Trike
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