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dllee
Joined: 03 Jul 2009 Posts: 5330 Location: East Bay
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Posted: Tue Nov 19, 2019 12:07 pm Post subject: |
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Poly was great for the careless beginners, that,s all.
Sun ate them up in a couple years. |
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GURGLETROUSERS
Joined: 30 Dec 2009 Posts: 2643
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Posted: Tue Nov 19, 2019 12:46 pm Post subject: |
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Just a note on poly boards, to jog the memory of those who used them. Tiga made wave boards, B@J boards, slalom boards, and a proper (at that time) long racing board, from the 80's through to the 90's. (All poly.)
The fastest boards they made were the dedicated slalom boards (The DSB craze.) One of those Tiga boards would be the only candidate fast enough to match the composite DSB boards. A friend sailed one, and it could turn in quite a performance, but was hopeless at any kind of gybe. The DSB craze was even criticised by the magazines .
In the 870's and 90's I was racing longboards. On the strength of Boards mag testing four racing boards I bought the Surf Partner Air. No actual speeds were given but the testers evaluation was that it was a good fast shape, with excellent pointing (upwind) ability. Knowing what we know now about testing (having to tread carefully to appease advertising revenue) I should have taken note of their final summary which was - we coukdn't help but wonder how such a good shape would fare in composite structure. (Trans lation- why the hell did they ruin it by making it in poly!)
That, in fact, proved to be the case in racing. fast on the plane, but way behind the others in light winds. I quickly updated to a proper racing board! |
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manuel
Joined: 08 Oct 2007 Posts: 1158
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Posted: Tue Nov 19, 2019 1:22 pm Post subject: |
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Flipped the board on its tummy. Water leaking from right rear front strap insert. Cannot see anything there. Appears to come from in-between holes in the tab where the starboard anti twist washer goes.
This means that there's water from front strap to tail, sucks big time. I guess I can try drying it out, waterproof the area and continue sailing until something else happens?
Only 1 year ½ of use... Barely any use before my ownership but at least purchased at a good price. _________________ *NEW* - Manu's Windsurfing Blog, The STORE! |
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manuel
Joined: 08 Oct 2007 Posts: 1158
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isobars
Joined: 12 Dec 1999 Posts: 20946
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Posted: Tue Nov 19, 2019 5:53 pm Post subject: |
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It was that test that prompted WSMag to stop measuring or publishing stiffness in their board tests. Their head to head tests proved it doesn't affect top speed. |
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rigitrite
Joined: 19 Sep 2007 Posts: 520 Location: Kansas City
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Posted: Tue Nov 19, 2019 5:53 pm Post subject: |
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The water can be removed, but it's not easy. Essentially, your goal is to vaporize the water and remove it. The most effective way to do this is with a vacuum bag and vacuum pump. You bag the board, rig up the vacuum pump, and place the entire assembly in the sun on a hot day, this will cause the water to vaporize at a much lower temperature than 100 C. The pump will continually pull the vapor out of the board and discharge it to atmosphere. You'll probably have to drill some holes (to be refilled later) to aid this process. The other option is to buy a new board.
You should accurately weigh the board and compare to mfg listed weight to get an idea of how much water is in there. (8.34 lb / gallon)
There is also this idea of putting your board on a spinner and using angular momentum to force the water out of holes on each end. This is of limited effectiveness.
Good luck. _________________ Kansas City |
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manuel
Joined: 08 Oct 2007 Posts: 1158
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Posted: Tue Nov 19, 2019 7:39 pm Post subject: |
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This is the second day drying outside and it's been slowly dripping. The dripping is good when the sun is out and then at night the board cools off and it stops. Vacuuming would be good. I was suggested to use trash bags too.
I have the vent opened, a hole at the bottom and the pin hole on the insert. Having the board on its tummy lets the water run down the pin hole, having it up the tail hole and upside-down evaporate through the tail hole.
Unsure of which strategy to use, I've been avoiding front exposure to limit damage on the board paint and pads. So I'm exposing the bottom near noon and the upside later in the afternoon.
The plan is to dry it out really well then plug and play until I hear a crack.
How should I go about plugging the hole? Gorilla glue plus some sort of platic pin? _________________ *NEW* - Manu's Windsurfing Blog, The STORE! |
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jingebritsen
Joined: 21 Aug 2002 Posts: 3371
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jingebritsen
Joined: 21 Aug 2002 Posts: 3371
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manuel
Joined: 08 Oct 2007 Posts: 1158
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Posted: Wed Nov 20, 2019 10:26 am Post subject: |
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Nice website for sure, need more of those!
If I set it up straight water drips out of the bottom while when setting on its belly water drips out of insert. I prefer the water coming out of the insert for now.
Since the back of the board is white, I taped a large black plastic bag over it.
Right now I'm getting about 1 drop of water every 17 seconds.
One drop = 0.05 mL
17 drops per seconds = 212 drops per hour
212 x 6h (of operating sun let's estimate)
1,270 per day = 63.5 mL
1,000 mL / 63.5 = 16 days
So before Christmas I should reach the weight of a Tabou board, great!
EDIT: The first day I had about 2 table spoons out I thought roughly, 1 table spoon = 300 drops by the way.
!!!! _________________ *NEW* - Manu's Windsurfing Blog, The STORE! |
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