4 Flexible propeller shaft coupling
The propeller shaft coupling supplied takes up the propulsion
thrust when traveling both ahead and astern. It is not necessary
to fit a thrust bearing behind the flexible coupling.
The coupling is designed for a 25 mm diameter propeller shaft.
When a propeller shaft of
larger diameter is used, it
should be reduced to a diame-
ter of 25 mm over the length of
the hub (45 mm). Radius 'R'
must be a minimum of 2 mm.
It is essential that the motor
and propeller shaft are in line.
The maximum allowable mis-
alignment of the propeller
shaft is 2°.
When the vibration dampers
have been adjusted correctly,
the motor can be aligned by
turning both the adjuster nuts fore and aft, left and right, exact-
ly the same number of turns.
Check the alignment again when the boat is in the water.
VD00174
The propeller shaft should be inserted into the hub over the
length stated.
The shaft and hub should be free of grease and dirt (*).
Tighten up the bolts to a torque
of 60 Nm (44 lbs.ft).
Use a torque wrench for this,
tightening up 'by feel' will not
give a satisfactory result.
12
VD00172
VD00173
VD00175
Take care that the rubber com-
ponents are not affected by sol-
vents.
5 Propeller shaft installation
The propeller shaft should have a diameter of at least 25 mm.
VD00177
Because of the axial movement of the propeller shaft, there
must be a minimum free space between:
- The outer bearing and the propeller hub;
- The inner bearing and the coupling hub.
Lock the propeller shaft cap nut with a lock plate.
6 Propeller and propeller aperture
The space between the tips of
the propeller blades and the
bottom of the boat should be at
least 15% of the propeller diam-
eter. The distance from pro-
peller hub to outer bearing
must be at least 20 mm (
but not more than 60 mm
3
(2
⁄
").
8
It is useful when working on the
motor if the shaft can be pushed about 10 cm (4") backwards.
The water must be able to flow freely over a distance of at least
10 cm (4") forward and aft of the propeller.
ANAEROBE LIQUIDS
DEGREASER (SOLVENTS)
VD00176
3
⁄
"),
4
VD00178
Electric Propulsion EP2200, EP2200H