12. LIQUID COOLING SYSTEM:
The Simonini Victor 2 Plus / Victor 2 Super engine is liquid cooled. The engine is equipped with
an integral water pump, the water pump is belt driven. The coolant is pumped around the cylinders
and cylinder heads under pressure from the water pump. There are 2 finned heat dissipaters which
route the coolant water to and from the radiator. The top heat dissipater is fitted with a thermostat
designed to open at 57° C. The other end of the top heat dissipater is to be fitted with the coolant
temperature sender.
The radiator fitted to the Victor 2 Plus / Victor 2 Super engine must be between 1000 to 1100 cm²
radian surface areas. The radiator mountings and security must be ensured before every flight.
The coolant should be a mixture of 70% water and 30% anti-freeze suitable for aluminum. If
necessary, change the anti-freeze percentage to ensure the effective cooling.
The maximum coolant temperature must not exceed 75°C. If on takeoff the coolant temperature
exceeds 50°C. You must reduce power until the temperature drops below 50° C.
The radiator filler/ expansion bottle is of the pressure relief type with an over flow tube. Ensure
that the overflow tube is routed into a bottle to capture any coolant, which may overflow due to
expansion.
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