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-   -   GRP Bow thruster on steel boat. (https://www.cruisersforum.com/forums/f129/grp-bow-thruster-on-steel-boat-237579.html)

andreaswolfman 26-07-2020 20:21

GRP Bow thruster on steel boat.
 
Im looking at installing a tunnel type bow thruster in a 3mm high tensile steel sailboat. The thruster comes with an optional steel tunnel at a rediculous price.

Is there anything wrong with epoxy glassing a GRP tunnel into a steel hull? Has anyone done this before?

I've only just bought the boat so I'm very familiar with GRP but its my first steel boat :) Also my first post so hi everyone!

south4320 27-07-2020 04:25

Re: GRP Bow thruster on steel boat.
 
I wouldn't do it. You will likely find that the internal diameter of the tunnel is the same as ordinary steel pipe and you don't need to buy the commercial tunnel.

Andreas W 27-07-2020 04:37

Re: GRP Bow thruster on steel boat.
 
Quote:

Originally Posted by andreaswolfman (Post 3195017)
Im looking at installing a tunnel type bow thruster in a 3mm high tensile steel sailboat. The thruster comes with an optional steel tunnel at a rediculous price.

Is there anything wrong with epoxy glassing a GRP tunnel into a steel hull? Has anyone done this before?

I've only just bought the boat so I'm very familiar with GRP but its my first steel boat :) Also my first post so hi everyone!

Glassing a GRP tunnel into a steel hull is not something I would recommend. You introduce a potential weak spot into your hull.

I am with south4320's advice to try to find a mild steel pipe of the same diameter and have it welded in properly.

Good luck! :thumb:


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