(S-1 Ep-35) DIY Dorade Box & Cowl Vent
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- เผยแพร่เมื่อ 30 ก.ย. 2024
- I believe this original concept was developed by Ohlin Stephens of Sparkman and Stephens Yacht Design.
I used repurposed wood salvaged from home remodeling demo and old furniture that was thrown away. The cowl vent was fashioned from a 3” PVC toilet ring and a 3” 90 degree PVC street ell.
You can save a boat load of money by fabricating your own Dorade Boxes and Cowl Vents. What are these? A Dorade box is simply a box with a baffle inside. It has a cowl vent mounted on top which is nothing more than a wind scoop in the shape of a curved horn (typically). The two items together are mounted on deck, over a hole bored into the cabin top (loosely speaking). This is a simple system that allows fresh air ventilation to the boat cabin without allowing water to get in.
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Problem is that plumbing PVC isn't intended to be exposed to the sun, so it has no UV protection.
There are grades of PVC intended for making furniture and greenhouses, etc., that are UV safe, but plumbing fittings are not.
So - while this may work, it won't last many years. Of course as cheap as they are that may not be much of a concern. Just put it together in a way that makes it easy to replace the PVC parts.
Yes Jeff. I'm well aware of no UV protection using PVC drain pipe fittings. There are paints available that will bond to PVC and extend the lifespan for a little while longer, but cheap and easy to replace was the original intention. The name "Shoestring Shipyard" should serve as a pretty good clue as to how things go around here! 😂🤣 Thanks for watching. 👍👍👍
Just a couple tips to you, you could have done this using a 4-in elbow and then your opening would be larger, and a 4-in elbow will fit around the outside of that flange. Those flanges are designed to have a piece of 3-in glue into them or a piece of 4-in glue on the outside of them. Couple other tips, You can get a flange that turns and then you could have glued the elbow on and then you could buy a fitting clean out that would shove into the elbow for inclement weather. Another note is that you could get a union flange and mounted inside the box glue a 4-in elbow to the outside of it and then you would have a vent that would never fall off and would still pivot. On top of that you could take that fit and clean out and you could glue it in and then all you'd have to do is screw the cap on In bad weather. Personally, I just made a couple doorades by 3D printing the whole thing. About $20 in petg plastic. I know they probably won't last as long as nylon or ASA, so I will reprint the tops in ASA in the future.
Thank you! 👍👍👍
If I had invented it in a car it would be spectacular, for natural ventilation. Tremendous project
Thank you! 👍👍👍
? why not trim the toilet ring so it would fit in side the box
I did consider doing just that, Bob. The problem being there are long slots around the flange, so trimming it down would render the flange too weak to stand up to the job. Otherwise, I would have gone that route. It's no big deal for me though. I'm not trying to win any beauty contests with the boat. I'm more concerned about the functionality without having to spend a lot of money. I can hide the flange though without too much trouble if I have the time. Thanks for offering your suggestion.