020574.03
27
vetus®
Installation instructions thruster RIM DRIVE 250 mm
Place the tunnel from the inside into the
holes.
Connect the tunnel to the hull of the ship.
Polyester thrust tunnel:
Resin:
The resin used for the polyester
thrust tunnel is Isophtalic polyester resin
(Norpol Pl 2857).
In order to connect the tunnel to the
hull of the boat we recommend to apply
epoxy resin. As an alternative to epoxy
resin, vinylester resin can also be used.
The use of polyester resin as an alterna-
tive to epoxy resin is not recommended.
Pre-treatment:
The outside of the tun-
nel must be roughened. Remove all of
the top surface down to the glass-fibre.
Use a grinding disc for this.
Remove the gelcoat on the inside of the
tunnel too by sanding or grinding.
This is necessary to get a good bond to
the GRP.
Important:
Treat the end of the tunnel,
after it has been sawn to length, treat
the end of the tube with resin. This will
prevent water seeping in.
Laminating:
Apply a coat of resin as
the first coat. Lay on a glass-fibre mat
and impregnate with resin. Repeat this
procedure until you have built up a suf-
ficient number of layers.
A polyester thrust tunnel should be fin-
ished as follows:
• Roughen the hardened resin/glass-
fibre. Apply a top coat of resin.
• Treat the side of the tunnel which
comes into contact with water with
‘epoxy paint’ or 2-component polyu-
rethane paint.
• Then apply anti-fouling treatment if
required.
Remove the clamping straps and remove the
strip spacers and shims .
The strip spacers and shims are furthermore
no longer necessary.
248 - 250 mm
(9
3
/
4
” - 9
27
/
32
”)
Check that the distance between the tunnel
ends is correct: 248-250 mm (9
3
/
4
” - 9
27
/
32
”).
7.2 Tunnel in one (1) part
Instead of a tunnel in two parts a one part
tube can be laminated as well.
After installation of the tunnel the middle
part can be cut out.
Place the clamps temporarily on the tunnel
and use them as a marking guide for the part
the be cut out.
Check that the distance between the tunnel
ends is correct: 248-250 mm.
248 - 250 mm
(9
3
/
4
” - 9
27
/
32
”)
248 - 250 mm
(9
3
/
4
” - 9
27
/
32
”)
ENGLISH
