Home Made Scuppers

gregcrawford · Post by **gregcrawford** » Thu May 06, 2010 11:39 am

I recently made some scuppers out of HDPE. You can see them here:

http://sports.webshots.com/album/577580869qmNInz

Let me know what you think.

Banshi · Post by **Banshi** » Thu May 06, 2010 12:12 pm

Ah the sight of fine craftsmanship brings tears to the eyes.......

Nice job.

I used what was on the boat for a long time but if you back up for any period at all it would flood the compartment where I store my tank, and occasionally given enough weight in the back of the boat the cockpit would get some water as well, so I finally went with this

http://www.defender.com/product.jsp?pat ... 3&id=57642

Vernay scupper drain fitting

It is not water tight but gets the job done

sauerleigh · Post by **sauerleigh** » Thu May 06, 2010 12:33 pm

CaptainScott · Post by **CaptainScott** » Thu May 06, 2010 2:56 pm

Hey Greg,
I love the workmanship! Nice job!

Now I can't tell from the photos so I may be spewing for no reason.

Please remember you do NOT want to close off those holes! That is the vent on your C22 for the gasoline fumes! Remember gas fumes are heavier than air but no way heavy enough to open a completely closed scupper even if it is hinged to swing freely! No reason to make a bomb of your beautiful boat!!

Just sayin' . . . . . . .

Scott

gregcrawford · Post by **gregcrawford** » Thu May 06, 2010 5:46 pm

The flap stays open a little, so I think there will be enough air gap for the fumes to flow out.

Banshi · Post by **Banshi** » Thu May 06, 2010 6:10 pm

Actually the scupper holes in the front of this compartment are always open so the fumes can not be trapped regardless of whether or not the rear scuppers are and since the hatch is not airtight either this adds to the air movement in this area. In fact on mine I have opened the front area up due to some modifications when installing the wheel that were no longer needed when I went back to the tiller.

Regardless, I think unless you installed flappered scuppers in the front you are good to go.

CaptainScott · Post by **CaptainScott** » Fri May 07, 2010 4:59 am

As long as they stay open a you are OK!

Thats a pretty dang nice settup you have! Is the lathe at home?
I'd love to have tools like that at home!!

Very nice job indeed!

Scott

Gus · Post by **Gus** » Fri May 07, 2010 8:37 am

As long as the front ones are open, you are good. The problem is to install a pipe from front ones to back ones, sealing the compartment.

Really nice work! Looks really, really nice!

Bhacurly · Post by **Bhacurly** » Fri May 07, 2010 9:30 am

Very nice!

I tried a one way water flap on my outlets also,, but it didn't work at all,,, Nice to see ya have access to the tools to do it right... LUCCKKKYYYY

gregcrawford · Post by **gregcrawford** » Fri May 07, 2010 12:53 pm

Yes, the lathe is at home. I also have a complete wood working shop, a mig and a tig welder, and a small mill. But it has taken me thirty years to collect it all, and now I rarely have time to use it!

Alanhod · Post by **Alanhod** » Sat May 08, 2010 9:07 pm

Paul · Post by **Paul** » Sun May 09, 2010 6:44 pm

I want to take issue with having the front scuppers open and the aft ones closed as being safe. Gas fumes are heavier than air. There are circumstances where they can collect in the aft storage area and then, if they don't exit out the aft scuppers, could move forward and even into the lower bowels of the boat, creating hazards.

Banshi · Post by **Banshi** » Mon May 10, 2010 4:51 am

Perhaps but fumes would have pass through a wide open cockpit.

CaptainScott · Post by **CaptainScott** » Mon May 10, 2010 8:35 am

Paul wrote:I want to take issue with having the front scuppers open and the aft ones closed as being safe. Gas fumes are heavier than air. There are circumstances where they can collect in the aft storage area and then, if they don't exit out the aft scuppers, could move forward and even into the lower bowels of the boat, creating hazards.

I did not want to beat a dead horse or disagree so I kept my fingers quiet.

Paul is spot on. The aft vent holes are lower than the forward ones. If the aft holes are plugged there is risk simply do to the fact as stated. Gas is heavier than air. Gas vapor will fill the aft compartment up to the point of the bottom of the forward vents then it will simply spill into the cocpit which is indeed like a giant bowl. The cocpit will also collect gas vapors. Yes, the cockpit will likely loose the vapors if the wind is blowing or you are moving along nicely. The forward vents alone are not sufficient to vent the aft lazerett of gas vapors.

If your aft vents are closed off, I do not recommend dropping a match or cigaratte in there! LOL! You'll know real quick if the forward vents are adequate! I'd bet against it! LOL!

Please make sure any storage of gas or propane is properly vented at the lowest point of the compartment to the outside of the hull. Venting into the hull is foolhardy and asking for a serious accident.
Scott