Make a Raceboard version please Patrik

Not what I was expecting at all

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thedoor said..
Not what I was expecting at all

neither was he with that first fin hit coming back at him.

very nice construction.

That looks like fun ,I'd like to give it a go .

Do they leak?

A real worthy innovation if you ask me, very impressive, they must mould them with an air bag instead of a vacuum bag, when he shows you inside you can see the bag stuck to the inside this could be the way of the future for boards, I sure would like one when there range of airinside broadens. there not cheap at the moment though $5000 Ouch! I think the concerns about them sinking are unfounded( unless you forget the screw in bung) judging by the hits I just seen that thing take to crack it, unless you get run over by a large boat in which case you'd be F*!#&d anyway. By the look of it the board would fare better than the rider in that scenario.

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cammd said..
Make a Raceboard version please Patrik

You can only sell one kidney

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cammd said..
Make a Raceboard version please Patrik

Make me a mould off your favourite board and I will have a go.

Edit later: Actually, now I think obout it I have a couple of moulds I could experiment with materials and techniques. Hmmmmm.... I think I will have to look into getting a vacuum pump.

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sailquik said..

cammd said..
Make a Raceboard version please Patrik

Make me a mould off your favourite board and I will have a go.

Edit later: Actually, now I think obout it I have a couple of moulds I could experiment with materials and techniques. Hmmmmm.... I think I will have to look into getting a vacuum pump.

I have often wondered if you could make half moulds, lay up each half then glue the two half's together using an overlap seam. The mast track could be on the top side and the fin box on the bottom and ties into the structure with adhesive. There is high strength two part epoxy they use on Carbon fibre car tubs.

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col5555 said..

sailquik said..

cammd said..
Make a Raceboard version please Patrik

Make me a mould off your favourite board and I will have a go.

Edit later: Actually, now I think obout it I have a couple of moulds I could experiment with materials and techniques. Hmmmmm.... I think I will have to look into getting a vacuum pump.

I have often wondered if you could make half moulds, lay up each half then glue the two half's together using an overlap seam. The mast track could be on the top side and the fin box on the bottom and ties into the structure with adhesive. There is high strength two part epoxy they use on Carbon fibre car tubs.

That's pretty much what BIC does with their thermoformed boards although the overall construction is different. I've often wondered why there aren't more thermoformed or rotomolded boards!

BIC uses some pretty serious machinery to thermoform their boards and other kit:

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jusavina said..

cammd said..
Make a Raceboard version please Patrik

You can only sell one kidney

It would work out cheaper in the long run if the durability was better. Still quite a lot of 30 year old RB's in action.

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col5555 said..
I have often wondered if you could make half moulds, lay up each half then glue the two half's together using an overlap seam. The mast track could be on the top side and the fin box on the bottom and ties into the structure with adhesive. There is high strength two part epoxy they use on Carbon fibre car tubs.

That is pretty much how most hollow boards are made and have been forever.

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sailquik said..

col5555 said..
I have often wondered if you could make half moulds, lay up each half then glue the two half's together using an overlap seam. The mast track could be on the top side and the fin box on the bottom and ties into the structure with adhesive. There is high strength two part epoxy they use on Carbon fibre car tubs.

That is pretty much how most hollow boards are made and have been forever.

I thought these were the first hollow boards what others are there?

Div 2's were pretty much all hollow construction, from back in the dark ages

Didn't f2 do some?

Bombora and I believe McTavish made hollow boards too:

airinside (switzerland) made some in 1998 (in chinese factory that later did the ab+ and drops)

Really awesome construction and would like to know more detail but company secrets!
Sure its two piece mould but not top and bottom laid up separately, cured then glued together and seam glassed over.
With them using prepreg carbon on the inside of the honeycomb I think they are using an air bladder system (like carbon bike frames).

It made me think about doing a custom and vacuum bagging carbon honey comb sandwich board then drilling out for plug hole and dissolve eps core.

Had a Windtech Prolite 900 which was a similar construction I think (didn't take a hack saw to it)

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gh said..
Didn't f2 do some?

F2 Thommen boards.
they leaked and so do the Patriks.

Had a 2nd hand custom race board many moons ago which was hollow, it had separate compartments inside. I did manage to break it, I don't think it was made for the ocean

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AUS4 said..
F2 Thommen boards.
they leaked and so do the Patriks.

They should not leak any more or less than conventionally made boards.

i.e.. if the laminate is fully saturated and devoid of pinholes and cracks, (airtight) it cant leak.

If a Styrofoam board leaks, the water can get absorbed in the foam.

Of course, boards with cracks and fractures can leak. If it is a foam core board, it is almost impossible to get the water out. If it is a hollow board, you just pull the plug and empty it. 'Voila': Dry and original weight again.

They were building 18 ft skiffs out of nomex honeycomb and pre preg carbon in the 80's. It's certainly a much stronger sandwich than how they traditionally build a board.


But i'm more than willing to bet that its far easier and cheaper to shape and lay a board up in the traditional fashion. Otherwise we'd all be sailing around on hollow boards by now.


perhaps i can get my boss to sponsor me and i can get a full quiver of airinsides. did you see the news today? Aparently pigs can fly now... and hell has frozen over too.

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seanhogan said..
airinside (switzerland) made some in 1998 (in chinese factory that later did the ab+ and drops)

Their homepage can still ba accessed and guess who used to be their shaper? Patrik, of course. He's been in the business of hollow boards for some time now, it seems. Strangely the boards on their homepage don't resemble anything I remember coming under their brand name then.
www.airinside.ch/index.htm

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sailquik said..

AUS4 said..
F2 Thommen boards.
they leaked and so do the Patriks.

They should not leak any more or less than conventionally made boards.

i.e.. if the laminate is fully saturated and devoid of pinholes and cracks, (airtight) it cant leak.

If a Styrofoam board leaks, the water can get absorbed in the foam.

Of course, boards with cracks and fractures can leak. If it is a foam core board, it is almost impossible to get the water out. If it is a hollow board, you just pull the plug and empty it. 'Voila': Dry and original weight again.

Except they are not dry and original weight while you're sailing. "Voila"

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AUS4 said..
Except they are not dry and original weight while you're sailing. "Voila"

They always are at the start, . And then later only IF they do leak, and they would only do so if they are damaged. They are obviously designed and built not to leak, just like your Fanatics.
So how much do your Fanatics leak?

Someone told me once all boards leak to some degree right from new. You've got fin boxes , footstraps, mast tracks pin holes. But if your foam-filed board takes on a cup full over a season, 250 grams, who's going to notice? You'll notice 10 grams in a hollow board every time you open the bung.

www.reddit.com/r/AskHistorians/comments/2folvo/were_wwii_submarines_really_as_leaky_and_wet_as/
"Every sea-going vessel has small leaks, so submarines had bilge pumps to keep up with the slow influx of water"

You can slightly pressurize and look for leaks with soapy water on either type. But on the hollow board you can probably fix them just by putting in a slow and thin laminating epoxy, positioning the leak downward and letting it be filled from the inside under a little pressure.

My 30 year old Davisdon D2 is hollow and built more like a catamaran hull.It used to leak about 2 cup fulls of water per 2 hour session. Lightly pressurised air into the back bung, soapy water and all the leaky areas found. In this case was a small leak near the cb case. No it does not leak a drop