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TOPIC: 4788 Sealing the Flybridge Drain Scuppers?

4788 Sealing the Flybridge Drain Scuppers? 27 Jun 2017 19:00 #1

  • kspellman02
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Have any of you considered, or done, sealing up the drain scuppers in the flybridge behind the upper sink and next to the davit? It seems to me if I just sealed it up and filled/glassed the spot, water would easily run off the back and I wouldn't have to worry about them leaking. I would even go as far as to use fiberglass filler, and gelcoat to match. Thoughts?

And for those of you who caught my wondering how to eliminate that water off the back corners of the FB, above tha back cockpit....I am still noodling on that one! ;-)

Kevin
M/V No Plan

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We have No Plan and we're sticking to it...,

4788 Sealing the Flybridge Drain Scuppers? 27 Jun 2017 19:16 #2

  • mmichellich
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The bridge would hold a whole lot of water. Use a very long straight edge, maybe 10 or more feet. Put it on floor with end overhanging back edge. You will find the area from drains slope up. You would have 3 or more inches of standing water.
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4788 Sealing the Flybridge Drain Scuppers? 27 Jun 2017 22:08 #3

  • Pacrimrat
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I agree, I had my drain on the port side plug in the winter and i had 2 inches of ice on the flybridge.
The drains are relatively easy to seal up by accessing them from the cockpit.

I reworked mine ten years ago and they are still holding.
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4788 Sealing the Flybridge Drain Scuppers? 02 Jul 2017 12:01 #4

  • Woodsea
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Our flybridge drains seem to get clogged with stuff. I'm not sure where it comes from. Birds, leaves, dust??? When ever I see it draining slowly, I take my wash down hose and squirt it up the thru hull. A bunch of stuff washes out onto the deck then the drain works pretty well.
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4788 Sealing the Flybridge Drain Scuppers? 03 Jul 2017 04:02 #5

  • Pacrimrat
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A wet and dry vac works well to clear you r scuppers.
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4788 Sealing the Flybridge Drain Scuppers? 05 Jul 2017 12:49 #6

  • stargazerwa
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They tend to get plugged at the elbows, access is easy from the lazzerette to remove hose clamps and pull out the junk.
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4788 Sealing the Flybridge Drain Scuppers? 08 Jul 2017 15:24 #7

  • Foster
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When you wash the boat the last thing is to clean the two scuppers. Ours end up full of pet/kid/visitor hair and other crap.

I've also used the "up from the thru hull" method to clean out blocking clogs. Light pressure on the hose is all you need. I heard from another 4588 owner they had done the same thing but managed to blow the hose free from the inside fitting and dumped a ton of water into the mid cabin.

When completely full that space holds about 9 gallons of water, so keep the scuppers clean!
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4788 Sealing the Flybridge Drain Scuppers? 05 Oct 2017 18:29 #8

  • Technomadia
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Foster wrote: When completely full that space holds about 9 gallons of water, so keep the scuppers clean!


What space are you referring to?

I'm dealing with a flybridge drain that is completely and solidly clogged with Irma debris - and I am trying to figure out the best way to fix it.

Thanks,

- Chris

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4788 Sealing the Flybridge Drain Scuppers? 06 Oct 2017 23:50 #9

  • Alan Teed
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Chris, in my experience the flybridge drains usually get blocked very close to the exit where the down drain makes a 90 degree turn to fit onto the through hull. I have always been able to clear mine by repeatedly pushing a plastic wire puller up through the through hull. The blockage has always been within the first 6-8".
Alan.
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Alan Teed
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Previously:
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Bayliner 2855
1977 Cal 34' blowboat
1981 Hunter 33' blowboat
Experience: Sail 50 years, Motor 15 years. 2 Transats, 1 Baltimore-Virgin Islands, 6 Months cruising Caribbean, 3.5 years cruising Med.

4788 Sealing the Flybridge Drain Scuppers? 14 Oct 2017 19:01 #10

  • Technomadia
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Alan Teed wrote: Chris, in my experience the flybridge drains usually get blocked very close to the exit where the down drain makes a 90 degree turn to fit onto the through hull. I have always been able to clear mine by repeatedly pushing a plastic wire puller up through the through hull. The blockage has always been within the first 6-8".
Alan.


The blockage for us ended up being about four feet up the line from the through-hull, where the hose turned to run up the wall to the flybridge.

In trying to clear it from the bottom, I actually ended up pushing the hose right off the through-hull!

Once it was disconnected - it took a combination of water pressure from below and shop vac suction from above to clear the line. It was a lot of work, and a huge mess. I probably dumped a few hundred gallons into the bilge in the process.

But at last - success!!!

- Chris

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Now intending to spend half the year slowly doing the Great Loop in our 4788!
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