Hobie Seat Scupper DRAIN VALVE NO MORE WET BUM

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Hobie Seat Scupper DRAIN VALVE NO MORE WET BUM

Postby Geordie » Sun Oct 21, 2012 12:49 am

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

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I started with valves from a diving snorkel.
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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
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Drilled out the scupper plug and cut out the excess plastic for a good drain hole lead in.
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I fitted and glued my central valve mount with heaps of super glue (Sikaflex brand is amazingly strong).
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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.
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AND Yes IT WORKS

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Last edited by Geordie on Sun Oct 21, 2012 9:34 pm, edited 1 time in total.
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Re: Seat Scupper DRAIN VALVE NO MORE WET BUM

Postby Dodge » Sun Oct 21, 2012 7:09 am

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
Cheers RICHO

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Re: Seat Scupper DRAIN VALVE NO MORE WET BUM

Postby badmotorfinger » Sun Oct 21, 2012 3:42 pm

Do you need to blow a short blast of air to make them clear?
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Re: Seat Scupper DRAIN VALVE NO MORE WET BUM

Postby clarkey » Sun Oct 21, 2012 6:46 pm

I'm not a complete idiot.Some pieces are missing.
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Re: Seat Scupper DRAIN VALVE NO MORE WET BUM

Postby Geordie » Sun Oct 21, 2012 9:21 pm

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.
Last edited by Geordie on Sat Oct 27, 2012 4:04 pm, edited 1 time in total.
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Re: Hobie Seat Scupper DRAIN VALVE NO MORE WET BUM

Postby Barrabundy » Sun Oct 21, 2012 10:51 pm

You are very patient, very determined with the hands of a surgeon and the eyes of a hawk! Well done!
the kool kids are now hanging at theyakshed.com
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Re: Hobie Seat Scupper DRAIN VALVE NO MORE WET BUM

Postby pavo » Mon Oct 22, 2012 5:32 pm

BRILLIANT. You should put a patent on it and sell it to Hobie.
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Re: Hobie Seat Scupper DRAIN VALVE NO MORE WET BUM

Postby Huwie » Fri Oct 26, 2012 4:50 pm

I'll take two! (or is one enough?) how much and does it include postage from Perth?
You're unique, just like everybody else...
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Re: Hobie Seat Scupper DRAIN VALVE NO MORE WET BUM

Postby flyinpete » Fri Oct 26, 2012 5:28 pm

great ingenuity , bordering on all out engineering. brilliant.
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Re: Seat Scupper DRAIN VALVE NO MORE WET BUM

Postby badmotorfinger » Fri Oct 26, 2012 7:05 pm

Geordie wrote: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.
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Re: Seat Scupper DRAIN VALVE NO MORE WET BUM

Postby Geordie » Sat Oct 27, 2012 4:43 pm

badmotorfinger wrote:
Geordie wrote: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.
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Re: Hobie Seat Scupper DRAIN VALVE NO MORE WET BUM

Postby Geordie » Sat Oct 27, 2012 10:50 pm

Tonystott wrote: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.
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Re: Hobie Seat Scupper DRAIN VALVE NO MORE WET BUM

Postby Geordie » Sun Oct 28, 2012 11:16 pm

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Re: Hobie Seat Scupper DRAIN VALVE NO MORE WET BUM

Postby paulo » Mon Oct 29, 2012 5:48 am

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. :lol:
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Re: Hobie Seat Scupper DRAIN VALVE NO MORE WET BUM

Postby wobbly » Fri Nov 09, 2012 12:26 pm

Happy days , no more wet bum!

I will take 2 pleeease.

Regards

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