Rotax 912 Series - Installation Dimensions; Moments of Inertia

d04922.fm
INSTALLATION MANUAL
BRP-Powertrain
Effectivity: 912 Series
Edition 2/Rev. 0
72-00-00
page 8
August 01/2012
2.2) Installation dimensions
Standard en-
gine version
See Fig. 3.
NOTE: All dimensions from zero reference points (P).
2.3) Centre of gravity of engine and standard accessories
Centre of gravity See Fig. 3.
NOTE: All dimensions from zero reference points (P).
2.4) Moments of inertia
Moments of in-
ertia
See Fig. 3.
Exhaust system approx. 4.0 kg (8.8 lb)
Engine mount 2.0 kg (4.4 lb)
Accessories Weight
Standard engine version
Pos. (+) Neg. (-) Total
max. dimension along x-axis (mm) 8.5 (0.33 in.) -581 (-22.87 in.) 589.5 (23.21 in.)
max. dimension along y-axis (mm) 288 (11.34 in.) -288 (-11.34 in.) 576 (22.68 in.)
max. dimension along z-axis (mm) 118 (4.65 in.) -276 (-10.87 in.) 394 (15.51 in.)
Standard
engine
version 3
External
alternator
Hydraulic
governor
Vacuum
pump
centre of gravity on x-axis
(mm)
-316
(-12.44 in.)
-100
(-3.94 in.)
-276
(-10.87 in.)
-255
(-10.04 in.)
centre of gravity on y-axis
(mm)
-5 (-0.20 in.) 139
(5.47 in.)
00
centre of gravity on z-axis
(mm)
-83 (-3.27 in.) 6 (0.24 in.) 56
(2.20 in.)
56
(2.20 in.)
Engine
version 2/4
Engine
version 3
moment of inertia around
axis x1-x1 (kg cm
2
)
11100
(26.341 lb ft
2
)
11600
(27.527 lb ft
2
)
moment of inertia around
axis y1-y1 (kg cm
2
)
10900
(25.866 lb ft
2
)
11390
(27.029 lb ft
2
)
moment of inertia around
axis z1-z1 (kg cm
2
)
17400
(41.291 lb ft
2
)
18200
(43.190 lb ft
2
)