9
5630 10 2020
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SX35 & SX50
MC_0072
Stern Thruster Cowls/ Grids
EN
Installing a stern thruster cowl for stern thrusters that will allow installations in boats with shallow drafts or due to other obstructions on the stern. These
can include obstacles such as trim tabs, jets or surface drive propeller systems where shallow installation of a stern thruster is the only option.
Cowls:
Designed to aid in water redirection and reduce air entering the tunnel in shallow installations.
Grides:
Designed to protect the thruster from objects while in use.
MG_0017
Shallow installation
Cowl water flow redirection
An angled edge further
preventing air attraction into
the tunnel
Composite material with smooth
inner walls for optimal water flow
and strength
A standard Sidepower stern
thruster tunnel with add-on cowls
for shallow installation
cowls to change the
water flow direction to
avoid obstructions on the
stern
cowls help prevent air
from the water surface
entering the tunnel in
shallow installations
Radiused corners prevent
turbulence
Easy installation for easy
bolt-on fitting
A
B
C
D
IMPORTANT
Angled cowls out of horizontal, must
be installed deeper to avoid air entry
in the thruster tunnel
Model # 90126 90080 90077 90136 90130 90220 90560
A (mm/ in) 528/ 20.8 681/ 26.6 823/ 32.4 850/ 33.5 1010/ 39.75 1208/ 47.6 1580/ 62.2
B (mm/ in) 166/ 6.5 172/ 6.8 243/ 9.6 260/ 10.2 330/ 13 393/ 15.5 515/ 20.3
C (mm/ in) 130/ 5.1 240/ 9.4
D (mm/ i n) 170/ 6.7 256/ 10.1 256/ 10.1 288/ 11.3 340/ 13.4 419/ 16.5 540/ 21.3
IMPORTANT
Install the cowls/ grids before mounting the tunnel to the SX thruster.
100mm
177mm
537mm
174mm
It is the installers responsibility
When installing Side-Power equipment to follow the outlined regulations/ classi cation rules (electrical/ mechanical) according to
international or special national regulations. Instructions in this guide cannot be guaranteed to comply with global electric/ mechanic
regulations/ classi cation rules.
To follow all health and safety laws in accordance with their local outlined regulations/ classi cation rules.
Before installation, it is important that the installer reads this guide to ensure necessary acquaintance with this product.
The recommendations made in this manual are guidelines ONLY, and Sleipner Motor AS (Side-Power) strongly recommend that
before installation, advice is obtained from a naval architect familiar with the particular vessel and regulations/ classi cations.
This manual is intended to support educated/ experienced staff and is therefore not suffi cient in all details for professional
installation. (NB: These instructions are only general instruction. If you are not skilled to do this work, please contact professional
installers for assistance.)
All electrical work must be done by a licensed professional.
Faulty installation of the tunnel, thruster or panel will render all warranty given by Sleipner Motor AS void. MC_0038
MC_0257
Thruster Installation Considerations and Precautions
EN
Before installation, it is important that the installer reads this guide to ensure necessary acquaintance with this product.
• The electromotor must be handled with care. Do not lift it by internal cable connections, main terminals or placed down on the driveshaft.
• The thruster power supply circuit must include the recommended sized fuse and a battery isolation switch.
• Never run the thruster out of water.
• It is important to follow the guidelines in this manual. Failure can result in severe damage to the thruster.
MC_0267
NEVER
Disassemble any part of the Ignition Protected stern thruster assembly. Tampering with the Ignition Protected stern thruster assembly or any attempt
to disassemble anything on this thruster assembly inside the boat can cause an explosion with severe consequences. If there is a problem with your
Ignition Protected stern thruster, please contact your dealer.
MC_0071
Installation Considerations and Precautions
EN
• Do not install the thruster in a position where you need to cut a stiff ener/ stringer/ support for the hull integrity without checking with the boat builder
this can be done safely.
• Contacts/ plugs or other joints in the control cables must be mounted so they remain dry at all times.
• We advise painting the gear house and propellers with antifouling. (NB: Do not paint the sealings/ rubber fi ttings or propeller shafts.)
• Do not nish the inside of the tunnel with a layer of gelcoat/ topcoat or similar. There is only room for a thin coat of primer and two layers of anti-fouling
between the tunnel and the propellers.
• keep installation within advised measurements. The entire surface is hard coated seawater resistant aluminium. Do not damage/penetrate the coat.
• The external stern thruster assembly and controller unit are ignition protected and can be installed in areas with the chance of explosive gases in
accordance to ISO 8846 and ABYC c1500. (Certi cation pending)
• Ensure that the external stern thruster assembly does not disturb the water fl ow under the hull. At higher speeds, if the thruster is installed to
low it can cause damage to the thruster and/ or add additional drag and unwanted water splashing.
• The recommended minimum tunnel depth from the water surface is 140mm (5,51‘) to the centre of tunnel diameter. Place the Thruster as deep as
possible for better performance and reduced noise.
• When installing the thruster ensure it does not foul existing equipment inside the boat like motor bedding etc.
• If able ensure that sterndrives/ trimtabs do not interfere with the water fl ow from the thruster as this can reduce the thrust eff ectiveness considerably.
We recommend the use of our Side-Power cowls to enhance the performance and allow installation in shallow draft boats. Side-Power cowls will also
minimise the eff ect if sterndrives/ trimtabs obstruct the thruster.
• Ensure there is enough space both inside and outside the transom of the boat and the thruster does not get in confl ict with existing equipment
inside the boat like steerage links etc. (NB: It is possible to mount the tunnel off set from the boat’s centre line if necessary.)
• Heat protection cut off is calculated from the thruster motor. To avoid cable overheating do not install place the volt cables from the thruster to the
control box near any heat sources.
