d04924.fm
INSTALLATION MANUAL
BRP-Powertrain
Effectivity: 912 Series
Edition 2/Rev. 0
75-00-00
page 23
August 01/2012
4) General notes on the cooling system
General note
Essential parts of the cooling system, such as radiator, etc., are available
for this engine from BRP-Powertrain.
Radiator See Fig. 11.
In an installation as depicted with the radiator (1) in a higher position than
the standard supplied expansion tank, a water accumulator (2) has to be
fitted instead of the expansion tank. Additionally a suitable expansion tank
(3) has to be installed at the highest point of the cooling circuit.
NOTE: Experience has shown that with good airflow, a radiator with
an area of 500 cm² (77.5 in²) is required for troublefree op-
eration.
Graphic Radiator
Fig. 11
08320
Non-compliance can result in serious injuries or death!
Certification according to the latest regulations, such
as FAR or EASA, must be conducted by the aircraft or
fuselage manufacturer.
The size and type of radiator should be adequate to
transfer thermal energy of approx. 25 kW (24 BTU/s)
(for ROTAX 912 A/F/UL) or approx. 28 kW (26.5 BTU/
s) (for ROTAX 912 S/ULS) at take-off power.
Part Function
1 Radiator
2 Water accumulator
3 Expansion tank
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