21
INSTALLATION
GB
RETRACTABLE THRUSTER BTR185 - IT GB - REV004B
• To avoid cavitation in the propeller, the tunnel must be positioned as low as possible.
minimum 0,75
times
Ø
tunnel
BARYCENTRE
L 1
L 2
Positioning
• The lever effect in the boat is proportional to the distance increase (L1 and L2) detected between the barycentre and
the position of tunnel A and B (bow/stern).
For greater lever effect prefer position B to position A.
L 1
L 2
F
ABBA
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