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5 - Installation
5.2 - Thruster
• It is recommended to install the thruster with a support base; the motor is already equipped with support feet.
Fig. A
TUNNEL
HULL
SUPPORT
• FIG.A The AC motor must be installed on a separate support from the hull. The support must be dimensioned so as to with-
stand the weight and power specified (table on page 4).
• FIG.B The distance (D) between the tunnel centerline (figure B) and the motor support must allow correct alignment between
the drive axle and the gearbox shaft.
• FIG.C The angle between the two shafts (gearbox and engine) must not exceed +/- 1.5 degrees.
• To position the thruster in the tube, find the halfway
point. Fig.D
Fig. D
Fig. F
Fig. B
D
Fig. C
• Use the flange to mark the centre of the holes on
the tube. Fig.E
Fig. E
• Fix the drilling template on the reference points, making su-
re they are aligned with precision at the half-way point of the
tube. FIG.F
F
• Take care that there are no resin residues in the contact
area between flange and tube; this could cause misalignment.
Any resin residues and any other hindrance to correct contact
must be removed by sandpaper.
INSTALLATION AND USE MANUAL BTAC SERIES - REV000A
SUPPORT
BTAC 250/300
BTAC 386
N.B. All holes must be exactly aligned with the half-way
point of the tunnel, since tolerance between propeller
and tunnel is minimal.
BTAC Series
TUNNEL
BTAC 513
9
EN
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