13
5246
9
2020
-
SEP 250 & SEP 300
Stern Tunnel Installation
EN
Stern thruster installation has extra considerations and precautions and thruster installation procedures.
See the attached manual supplied in the stern thruster kit
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MG_0005
R
D
1
2
3
4
6
5
8 x layers of fiberglass
and resin
8 x layers of fiberglass
and resin
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R = D x 0,1
R = D x 0,1
D x
0,1
-0,1
5
D x
0,
1-0
,15
D
Layers of
fiberglass
and resin
Layers of
fiberglass
and resin
*Fiberglass
Hull
*Steel/
Aluminium
Hull
Hull
Hull
Hull
Tunnel
Tunnel
Tunnel
Welding
Layers of
fiberglass
and resin
Additional Layers of
fiberglass and resin
Additional Layers of
fiberglass and resin
Hull
1
3
4
2
IMPORTANT
Avoid all casting where the motor-bracket is to be placed, as this will cause misfi t and possible failure to the gear house.
Tunnel Installation
EN
With tunnel installed and cast.
1. Round the edges with a radius of 10% of the tunnel diameter.
2. For steel/ aluminium hulls make a slope with a length of 10-15% of the tunnel diameter.
(NB: If this is not possible, round the tunnel end as much as possible.)
3. Additionally cast two layers on the outside of the tunnel/ hull in a 10cm area
4. Follow the same method if making the defl ector/ spoiler.
You must apply gel coat to areas you have grounded/ moulded to make waterproof. These areas allow water access to the hull which is typically not
waterproof without these applications outside.
(NB: All original Side-Power tunnels are fully waterproof when delivered except in the areas where
you have cut and bonded it to the hull.)
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