Quick BTQ Series - Page 27

EN
BTQ SERIES INSTALLATION AND USE MANUAL - IT EN - REV001A
27
BTQ series5 - Installation
SINGLE PROPELLER
DOUBLE PROPELLER
• The force produced by the ow of the water when the boat is moving produces resistance on the rear face of the tunnel,
which is an area exposed frontally to the water ow.
To limit this phenomenon, prepare an indentation in the rear part of the tunnel. Otherwise, create a deector on the front
part of the tunnel.
• If the tunnel is near the waterline, it is advisable to t a grating at the end of the tube.
The grating must have as large a vertical mesh as possible to avoid contrasting the propeller
thrust. The vertical mesh prevents the entry of most of the oating objects.
• The rounded ends of the tunnel limit the creation of turbulences and cavitations, improving performance of the propeller
thrust and reducing noise levels to a minimum.
5.1 - The Tunnel