Hobie Seat Scupper DRAIN VALVE NO MORE WET BUM

[Geordie]

My next invention

Seat Scupper DRAIN VALVE prototype

After spending a lot of time sailing and sitting in a puddle of water, I have decided to do something about it.

Have tried seat foam to lift me up out of the puddle but the solution is really a one way scupper plug to fit the screw in seat drain holes.

HERE IT IS





I started with valves from a diving snorkel.


I have been looking high and low for a valve that starts out about the right size but alas it has been hard to track down. The initial idea was to make a round disc to insert on the end of the plug but I tried this idea first.

I tool out the silicone valves. Cut out the valve central holder bit and trimmed it to fit in the end of the scupper plug


Drilled out the scupper plug and cut out the excess plastic for a good drain hole lead in.


I fitted and glued my central valve mount with heaps of super glue (Sikaflex brand is amazingly strong).


I trimmed and sanded the end of the finished plug to get a flat seating surface for the valve flap.
Then I trimmed the valve to a smaller diameter with really sharp scissors.







AND Yes IT WORKS

[Dodge]

A nice practical solution, and neat work mate.

Used the same style of screw bungs in my scupper a couple of years ago .... but they do not self drain.

viewtopic.php?f=12&t=15252

[badmotorfinger]

Do you need to blow a short blast of air to make them clear?

[clarkey]

Here you go
http://www.paddlerscove.com/venturi-scupper-valve.aspx

[Geordie]

Thanks guys,

clarkey,
I did look at those but unfortunately, they do not fit the seat drain scupper on a Hobie kayak which is why I am trying this option. Sorry I should have made it clear that this was for a Hobie seat scupper. The Hobie Scupper plug is a boat bilge drain plug.

badmotoringer,
in a snorkel or diving regulator yes you blow a bit of air to help push the water out, but in the kayak, the weight of the water easily pushes the valve open.

[Barrabundy]

You are very patient, very determined with the hands of a surgeon and the eyes of a hawk! Well done!

[pavo]

BRILLIANT. You should put a patent on it and sell it to Hobie.

[Huwie]

I'll take two! (or is one enough?) how much and does it include postage from Perth?

[flyinpete]

great ingenuity , bordering on all out engineering. brilliant.

[badmotorfinger]

badmotoringer,
in a snorkel or diving regulator yes you blow a bit of air to help push the water out, but in the kayak, the weight of the water easily pushes the valve open.

Cool. Was just wondering if it needed some fart holes in seat as well. Great job.

[Geordie]

badmotoringer,
in a snorkel or diving regulator yes you blow a bit of air to help push the water out, but in the kayak, the weight of the water easily pushes the valve open.

Cool. Was just wondering if it needed some fart holes in seat as well. Great job.

Yes Fart assisted drainage could work well, except that you need to have an appropriately positioned hole in your wetsuit pants for correct allignment of the expelled fart for best venturi effect.

[Tonystott]

Caution required depending on last meal consumed LOL

[Geordie]

Caution required depending on last meal consumed LOL

Yes the valves are only designed for water or a bit of gas (nothiong else).

OK an update, I have tested prototype one and made three others.

I also found a small neat one wey valve from Whale
http://www.downwindmarine.com/Whale-Pla ... 00902.html
I tried one of these added to the bottom of the Hobie scupper plug but due to the narrow hole of the scupper and that some of them are not moulded very straight (the Hobie seat scupper hole that is ) the valve would fit into one seat scupper but not the other. This valve did work but is a much slower drain than the snorkel valve type.

[Geordie]

[paulo]

Brilliant, this is also one of my pet hates but given its warm most of the time in Qld never did anything about it.
Ill take two pair please.