13
GB
SECTION
4
INSTALLATION
V-DRIVE gearbox is not flanged directly on to the engine. Make sure that the connecting cardan shaft
does not transmit vibration which could damage the transmission.
V-DRIVE gearbox is installed separately, with a drive shaft and the foundation mounting can be either
rigid or elastic.
If necessary, in addition to the normal flexible coupling fitted to the engine, fit an extra damper to absorb
the vibration caused by an imperfect alignment.
PROPELLER SHAFT CONNECTION
You are advised to use a thrust bearing to reduce the inevitable axial strain on the gearbox.
Performance data for the propeller shaft bearing will depend on the loads applied during operation, and
must be specified by the designer and builder of the boat.
The alignment must be checked with the boat in the water, as the deformation of the hull in the water is
enough to alter an alignment done on stands.
Fig. 14
X
[mm]
0.05 max
Y
[mm]
0.1 max
L
[mm]
min. 500 for
d < 60 mm
min. 1000 for
d 60 ÷ 90 mm
min. 2000 for
d > 90 mm
Fig. 13
Fig. 12
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