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Rotax 912 i series Installation Manual

Rotax 912 i series
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d05781.fm
INSTALLATION MANUAL
BRP-Powertrain
Effectivity: 912 i Series
Edition 1/Rev. 2
24-00-00
Page 26
January 01/2014
WARNUNG
Tip
5.3) TIPS: Wiring Powerside (optional)
Performance of the key switch and operation of the relays.
WARNUNG
Tip
This design allows a simplification of the starting pro-
cess. Instead of using the “Start Power Switch“ and
the “start button“ at the same time the engine can be
started by turning a key switch. In addition, the key
switch takes over the control of a master relay.
NOTE: It is not allowed to install the „Start Power
Switch“ and the „Start button“ with a single
switch. This may only be switched in parallel
and at the same time.
WARNUNG
Tip
The pilot display takes over the control of the start
power relay. If the display is turned ON, for example
in case of a complete restart of the aircraft, the start
power relay closes. If the key switch is actuated (en-
gine start) and put into the third position, the engine
starts. Due to the spring return position of the key
switch, it falls back to the second switching position
(ON). As soon as the engine has reached a defined
and displayed speed (1500 r.p.m.) to the pilot display,
the relay opens. The start power relay still stays open
for security reasons until restart of the display.
WARNUNG
NOTICE
LANE Select Switch A and LANE Select Switch B also
Fuel Pump Switch A and Fuel Pump Switch B in this
connection type must be a toggle switch.
Position of the key
switch
0 1 2
Pins Master relay
Airframe Ground
HIC B Pin 4
HIC B Pin 12
Aircraft/Engine Status Off On Engine Start
Master Relay Open Closed Closed

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Rotax 912 i series Specifications

General IconGeneral
Number of Cylinders4
Max Power100 hp (73.5 kW)
Max Power Output RPM5800 rpm
Ignition SystemDual electronic ignition
Oil SystemDry sump, forced lubrication with separate oil tank
Reduction Gear Ratio2.43:1
TBO2000 hours
Engine Type4-stroke, horizontally opposed
Displacement1352 cm³
Bore x Stroke84 mm x 61 mm
Max Torque128 Nm
Fuel TypeAvgas 100LL or unleaded automotive gasoline
Fuel SystemElectronic fuel injection
Cooling SystemLiquid/air-cooled

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