Bow Rail Restoration

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carl
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Bow Rail Restoration

Postby carl » Thu Jun 29, 2017 8:23 pm

I'm starting a new topic (thread) tonight documenting my Bow Rail Restoration. I completely removed the bow rail from the boat. Then I completely disassembled the bow rail joint by joint labeling all of the parts for reassembly. Using lots of water, Brillo pads and a 3/4" fitting brush I cleaned everything. The 3/4" fitting brush works very well at cleaning out all of the female parts of the bow rail, you can find one in your local home center in the plumbing section. The previous owners had paint on all of the bow rail bases and those took a little longer than the rest of the railing to clean up. Overall the railing came out looking great.
Attachments
P4200004.JPG
Last edited by carl on Sat Jul 01, 2017 6:22 am, edited 3 times in total.
1990 Marinette 32' Sedan Fly Bridge "IKOI"
Twin Crusader 350's (Closed Loop Cooling)
Bow to Stern Full On Restoration in Progress
Chickamauga Lake, Tennessee
A boat is always safe at shore, but that's not what its built for...

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carl
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Posts: 236
Joined: Sun Feb 08, 2015 5:58 pm

Re: Bow Rail Restoration

Postby carl » Thu Jun 29, 2017 8:28 pm

I discarded all of the round rubber gaskets that the factory had installed between the bow rail bases and the deck. These rubber gaskets were not a good choice as they locked in moisture which contributed to corrosion under each base. But the true culprit is the dissimilar metals, my stainless steel bow rail bases do not get along well with the aluminum deck, it is very important that you isolate these two from one another. And very important you properly clean out all corrosion before repainting.
Attachments
P4200013.JPG
Last edited by carl on Sat Jul 01, 2017 6:24 am, edited 4 times in total.
1990 Marinette 32' Sedan Fly Bridge "IKOI"
Twin Crusader 350's (Closed Loop Cooling)
Bow to Stern Full On Restoration in Progress
Chickamauga Lake, Tennessee
A boat is always safe at shore, but that's not what its built for...

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carl
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Posts: 236
Joined: Sun Feb 08, 2015 5:58 pm

Re: Bow Rail Restoration

Postby carl » Thu Jun 29, 2017 8:36 pm

I am using 1/4" thick white Starboard material in place of the original rubber gaskets. I did not cut these by hand, I took a bow rail base to a plastics fabrication shop where they CNC cut the discs for me and drilled the three holes for the fasteners and as a result they fit perfectly under the bases, have very smooth edges and look very good. Starboard is a good candidate for an isolator between the stainless steel bow rail bases and the aluminum hull plus it has a UV inhibitor in it.
Attachments
P4200007.JPG
P4200015.JPG
P4200014.JPG
Last edited by carl on Sat Jul 01, 2017 6:32 am, edited 4 times in total.
1990 Marinette 32' Sedan Fly Bridge "IKOI"
Twin Crusader 350's (Closed Loop Cooling)
Bow to Stern Full On Restoration in Progress
Chickamauga Lake, Tennessee
A boat is always safe at shore, but that's not what its built for...

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carl
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Posts: 236
Joined: Sun Feb 08, 2015 5:58 pm

Re: Bow Rail Restoration

Postby carl » Thu Jun 29, 2017 8:40 pm

I am not using sheet metal screws to reattach the bow rail to the deck. I am using a Thread Setter Tool to install 10-32 aluminum inserts. I went with the fine thread 10-32. They are available from McMaster-Carr or Grainger.
Attachments
P4200032.JPG
P4200027.JPG
P4200023.JPG
P4200019.JPG
Last edited by carl on Sun Jul 02, 2017 9:38 pm, edited 2 times in total.
1990 Marinette 32' Sedan Fly Bridge "IKOI"
Twin Crusader 350's (Closed Loop Cooling)
Bow to Stern Full On Restoration in Progress
Chickamauga Lake, Tennessee
A boat is always safe at shore, but that's not what its built for...

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carl
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Posts: 236
Joined: Sun Feb 08, 2015 5:58 pm

Re: Bow Rail Restoration

Postby carl » Thu Jun 29, 2017 8:45 pm

I am using 10-32 x 1" long stainless steel phillips oval head machine screws to secure the rail to the deck. Additionally I'm bedding the Starboard discs down to the deck with 3-M 4200.
Attachments
P4200028.JPG
Last edited by carl on Sat Jul 01, 2017 6:27 am, edited 3 times in total.
1990 Marinette 32' Sedan Fly Bridge "IKOI"
Twin Crusader 350's (Closed Loop Cooling)
Bow to Stern Full On Restoration in Progress
Chickamauga Lake, Tennessee
A boat is always safe at shore, but that's not what its built for...

GB49
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Joined: Sat Jul 12, 2014 8:23 pm
Location: Catawba Island, OH.

Re: Bow Rail Restoration

Postby GB49 » Thu Jun 29, 2017 8:47 pm

Clamp two stainless flanges together aligning the weep holes and run a drill press through the weep holes a few sizes larger in diameter. The factory size diameter is so small they get clogged up and don't drain. Plus the old rubber gaskets would sink up into the weep hole. The hard starboard will not do that but a larger hole will aid in flushing debris out.

I used nylon washers that were about 1/8" thick under each screw and did away with the full gasket. I can spray the garden hose under each flange and blow out the dirt (allot of dirt collects under there). Also be sure to seal the screws with 4200 or something similar.

All my flanges have been tight and corrosion free for 10+ years since doing this.

-Karl
1986 Sedan 32'. Twin Chrysler 360in^3, 275hp, with K&N flame arrestors

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carl
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Re: Bow Rail Restoration

Postby carl » Thu Jun 29, 2017 8:52 pm

Here are a couple of pictures of the underside of the bow rail base with the Starboard disc, three machine screws and three aluminum inserts. I've compressed (squeezed) one of the three aluminum inserts as an example of what they look like once compressed. This compression would sandwich the deck between the two ridges created by the tool.
Attachments
P4200021.JPG
P4200018.JPG
1990 Marinette 32' Sedan Fly Bridge "IKOI"
Twin Crusader 350's (Closed Loop Cooling)
Bow to Stern Full On Restoration in Progress
Chickamauga Lake, Tennessee
A boat is always safe at shore, but that's not what its built for...

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carl
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Posts: 236
Joined: Sun Feb 08, 2015 5:58 pm

Re: Bow Rail Restoration

Postby carl » Thu Jun 29, 2017 9:27 pm

It is important to clean your bow rail base bottoms well, the two lines which are almost 90 degrees out from one another are actually weep channels which allow water to drain out from the rails.
Attachments
P4200002.JPG
Last edited by carl on Sat Jul 01, 2017 6:28 am, edited 2 times in total.
1990 Marinette 32' Sedan Fly Bridge "IKOI"
Twin Crusader 350's (Closed Loop Cooling)
Bow to Stern Full On Restoration in Progress
Chickamauga Lake, Tennessee
A boat is always safe at shore, but that's not what its built for...

User avatar
carl
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Posts: 236
Joined: Sun Feb 08, 2015 5:58 pm

Re: Bow Rail Restoration

Postby carl » Thu Jun 29, 2017 9:32 pm

Additionally, I drilled out all of the holes in all of the bow rail bases with a 13/64" drill bit to better accommodate the 10-32 machine screws.
Attachments
P4200029.JPG
1990 Marinette 32' Sedan Fly Bridge "IKOI"
Twin Crusader 350's (Closed Loop Cooling)
Bow to Stern Full On Restoration in Progress
Chickamauga Lake, Tennessee
A boat is always safe at shore, but that's not what its built for...

User avatar
carl
Royal Aluminum Star
Posts: 236
Joined: Sun Feb 08, 2015 5:58 pm

Re: Bow Rail Restoration

Postby carl » Thu Jun 29, 2017 9:37 pm

The 10-32 aluminum inserts require a 9/32" hole, I used the original screw hole as a guide. Here is a picture with one of the three holes drilled and two of the original screw holes still in place to show you the contrast between them.
Attachments
P4200022.JPG
Last edited by carl on Thu Jun 29, 2017 9:59 pm, edited 1 time in total.
1990 Marinette 32' Sedan Fly Bridge "IKOI"
Twin Crusader 350's (Closed Loop Cooling)
Bow to Stern Full On Restoration in Progress
Chickamauga Lake, Tennessee
A boat is always safe at shore, but that's not what its built for...