Venting my rage

> 10 years ago
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Marvin
Marvin
WA
725 posts
WA, 725 posts
15 Oct 2009 1:54pm
Not really. But I do find the vent hole in my boards really annoying unless I ignore it completely.

In the past I have always just tightened it up and never bothered to vent the board (off the water).

But recently, I managed to destroy my wave board and someone said that was because I hadn't been loosening the vent plug out of the water.

Anyway, I am still reluctant to vent - after all, putting your board out on the hot sand while on the car or rigging, then screwing up the vent plug, then dunking it in the (cold) ocean is a recipe for maximum stress on the board IMHO (and on me). Also doesn't help your first run when you remember you forgot to do it up!

Better to screw the vent plug up tight while the board is cool, not bother with it, and then try and keep it out of the sun? Less stress all around?

Any compelling alternatives to the above logic?
laff77
laff77
NSW
273 posts
NSW, 273 posts
15 Oct 2009 5:13pm
I can be pretty forgetful at the best of times: keys, phone, wallet. Hell I sometimes forget to do up the clasp on my helmet when I go out on the water. Rememebering to screw up my vent plug is just a dissaster waiting to happen. I keep em out of the sun and the my van when not being used. So far so good.
Bertie
Bertie
NSW
1351 posts
NSW, 1351 posts
15 Oct 2009 5:32pm
the vent plug is more about avoiding board explosions due to the extreme in car temps of summer (up to 80 deg C) and for air travel. these are the main ones that delam boards completely and quickly.

long term use of vent plugs will extend the life of you board. it will see less pressure cycles which is only a good thing :)

what happened to your board?? how was it destroyed??
Marvin
Marvin
WA
725 posts
WA, 725 posts
15 Oct 2009 3:04pm
It was a 2001 JP wood sandwich which I bought second hand in about 2004.

Last summer my jumps were getting more reckless/bigger - resulting in the odd major belly flop.

Delaminated a large sheet off the bottom, backwards from the hinge which must have developed in the middle of the board. (While sailing along, was surprised to see polystyrene trailing behind after a major ripping sound!)

Probably at the end of its working life I guess.
Mark _australia
Mark _australia
WA
23688 posts
WA, 23688 posts
15 Oct 2009 3:27pm
I always have it undone except for about 3 months in winter.

Make sure the straps are dry ish before putting in bag, and leave bag open a bit.

Many ppl (sorry, people ) say they have always left it done up and never had a delam. Good luck to them.
BUT I have also seen board where the paint has bubbled due to pressure in the board making water vapour get under the paint. It looks really bad and devalues the board.
Haircut
Haircut
QLD
6491 posts
QLD, 6491 posts
15 Oct 2009 7:54pm
seems most early jp waves were fragile up to, and including, the barbed wire graphics model, and after that things seemed to have improved noticeably strength wise
Marvin
Marvin
WA
725 posts
WA, 725 posts
15 Oct 2009 8:08pm
what year were the barbed wire graphics models?
Haircut
Haircut
QLD
6491 posts
QLD, 6491 posts
15 Oct 2009 10:38pm
i think around 2002? i look for a photo 4 u
Bertie
Bertie
NSW
1351 posts
NSW, 1351 posts
15 Oct 2009 11:50pm
i thought some 01s were weak and were replaced with 02s under warranty. but i could be wrong.
Haircut
Haircut
QLD
6491 posts
QLD, 6491 posts
15 Oct 2009 10:54pm

Marvin
Marvin
WA
725 posts
WA, 725 posts
15 Oct 2009 10:51pm
that your backyard haircut? no wonder you know so much.

thanks!
Haircut
Haircut
QLD
6491 posts
QLD, 6491 posts
16 Oct 2009 1:52am
took me 25mins to search through my pile of boards there to find that one and my ladder

i don't know much, i've just been reading too much pommy forums
barn
barn
WA
2960 posts
WA, 2960 posts
16 Oct 2009 9:14am
#8730;ent doesnt bother me when i sail with a cracked rail, a smashed crab for a nose and water coming out from under the pads... there is no such thing as a water tight board.. let the board breath!
sboardcrazy
sboardcrazy
NSW
8349 posts
NSW, 8349 posts
17 Oct 2009 5:27pm
Vent plug?????????
Marvin
Marvin
WA
725 posts
WA, 725 posts
17 Oct 2009 3:15pm
Yeah yeah sbc, its the plug that's annoying, not the vent.

You are hereby appointed keeper of the vent terminology.
nick0
nick0
NSW
510 posts
NSW, 510 posts
17 Oct 2009 7:05pm
i keep my plud done up .. cant be bother playing with it ... but how much could the board posibly expand .. some one nees to measure how much air is sucked in under extreme temps .. say 50 degrees .. i reckon it would be so lil .. and some one mentioned a long time ago in a thread .. thier like 0.6% water in 10l of air .. so it cnt posibly suck enough water to make anny diference
WINDY MILLER
WINDY MILLER
WA
3183 posts
WA, 3183 posts
17 Oct 2009 4:48pm
master board maker bj insists on ALWAYS opening the vent ...

something to do with the foam beads always expanding and contracting whilst the vent is done up; eventually loosing their molecular structure thingo errr and the board wont last as long.....

course if you've got loads of coin, don't worry about it, but if you're strapped, u might be able to eeek another season out the ol dog.
Mark _australia
Mark _australia
WA
23688 posts
WA, 23688 posts
17 Oct 2009 5:49pm
nick0 said...

i keep my plud done up .. cant be bother playing with it ... but how much could the board posibly expand .. some one nees to measure how much air is sucked in under extreme temps .. say 50 degrees .. i reckon it would be so lil .. and some one mentioned a long time ago in a thread .. thier like 0.6% water in 10l of air .. so it cnt posibly suck enough water to make anny diference



Who cares how much the board expands...it doesn't take much movement when it is repeated expansion and contraction.
Get some styro and see how easy it is to separate the balls. TWith the sandwich moving in and out say 0.5mm over and over again it will eventually fracture the styro. When we talk about delamination, ppl visualise the sandwich coming "unglued". It doesn't: it is usually a break in the styro parallel to the divinycell ..... if you take it apart it looks like a layer of divinycell with one layer of styro balls glued to it.

I can't be bothered doing the math but going off the hiss when I open the vent plug just on a normal 30deg day I reckon it could get to 30 or 40psi (?) inside the board in a car if the plug is done up?
easty
easty
TAS
2213 posts
TAS, 2213 posts
17 Oct 2009 9:02pm
Mark _australia said...
I can't be bothered doing the math but going off the hiss when I open the vent plug just on a normal 30deg day I reckon it could get to 30 or 40psi (?) inside the board in a car if the plug is undone?


30 deg is normal? Sigh
Mark _australia
Mark _australia
WA
23688 posts
WA, 23688 posts
17 Oct 2009 6:06pm
Easty I meant a normal summer day as opposed to the board in the car hahaha
Hey glad you quoted me it made me notice the typo..... last bit should be done up NOT undone
easty
easty
TAS
2213 posts
TAS, 2213 posts
17 Oct 2009 11:20pm
Mark _australia said...

Easty I meant a normal summer day as opposed to the board in the car hahaha
Hey glad you quoted me it made me notice the typo..... last bit should be done up NOT undone


Ha, didn't even notice the typo, got to you saying a "normal 30 deg day" and started thinking about repairing the rips in my 5/4 wetty.
Marvin
Marvin
WA
725 posts
WA, 725 posts
17 Oct 2009 8:20pm
Yer right Mark_Oz - my board 'delaminated' one layer of foam beads back. Often got left inside the car....

I'm thinking I'm going to vent the board on the longer trips and when its stuck on/in the car.

Still, headed off into the surf on my SUP this morning with the vent plug undone.
I need a fail safe system for remembering to do it up - maybe velcro a screwdriver to the back of my helmet (which always goes on)?
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