Is it heavier?

Manuel7 said..
Is it heavier?

Trully speaking I have a feeling somerhing like that after a session on the water, but I am thinking that this is due to the footstraps, when they are dry and after when they are wet!
The other way is to weight the board without footstraps before and after water.

Can you send a photo of what the vent plug looks like? Without the water?

It's good to have an idea of the weight when dry. Yes when wet both straps and pads soak up a bunch of water.

If you can easily replace the valve do it, it not, I wouldn't worry about it unless there's a problem obviously.

Sparky said..
Can you send a photo of what the vent plug looks like? Without the water?

Yeah, tomorrow i ll take a new photo

Sparky said..
Can you send a photo of what the vent plug looks like? Without the water?

Yeah, tomorrow i ll take a new photo

SurferKris said..
Looks like the valve is doing its job. It is supposed to let out air when the pressure inside the board builds up.

I was thinking the same, but didnt really happen when I left the board under the sun, however that happened when i left it the shade.
I thought that the pressure inside would minimise when at low temperature and the bubbles would come out under the sun.
There is another option: the time that I had the board under the sun the water pressure on the top of the valve to be above the air pressure inside the board, and thats why no bubblles appeared at that time and when I moved it in the shade the most water moved away and air released.

decrepit said..
There's a thermal lag, between putting board in sun and pressure building up inside. That didn't happen until you put the board in the shade. So to my mind the vent is letting internal pressure out.
To test if it's letting water in is harder. weighing it before and after a sail, needs to be very precise, if the valve is leaking water in it won't be very much, (possibly only a few grams) but obviously can build up over time. You may need to saturate the foot straps before weighing, it would be a pain to take them off and on.

Some years ago I tested goretx vents before using them in my boards.
They worked fine until they had water on both sides. Even after thoroughly drying they no longer worked, wouldn't pass air in either direction.

As yours is passing air out, it's probable there's no water inside, as water on the inside of the valve would block air coming out.

You are propably wright. I ll try to make some weight measerements with and without foot straps.
However, every time I pick the board after some days off use, looks lighter. This is or because the sea water of the footstraps that was dried or because of my strenght that is stronger compared it after a session when I am tired and my arms really heavy.

Severne have the steps on their website, assume it'll be similar for your board. Scroll down to Replacing the Gore-tex air vent.

www.severnesails.com/product-care/board-care-guide/

Sparky said..
Can you send a photo of what the vent plug looks like? Without the water?

Here is your photo......

yes that's a standard Goretex vent. The bit with the writing on top is the bit that breaks off. It's the same hexagonal size as the base underneath, where you need to apply screwing force. There's only very small uprights joining the top and base.

Personally I wouldn't use one after my experiments. They are fine while the foam inside is dry, but once water does get inside, they will stop venting. So carry on as usual until you get a bad ding, that lets water in. After that the water will migrate to the vent as it breaths, then stop breathing, and there goes the bottom of your board, whenever there enough pressure difference between inside and out.

That's what I'd do, but the goretex thread is a bigger dia, it's not a straight replacement. You have to do the whole thing, cut the old one out from the board, with a router. Then bog in a standard fitting, although it should be fine as long as you don't get a ding.