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how to define an adequate configuration for moullding kayak
- Thread starter moulita
- Start date
MikeHalloran
Mechanical
So, what?
Do you think that a question is somehow implicit in your assertion?
Or are you merely filing a progress report?
Mike Halloran
Pembroke Pines, FL, USA
Do you think that a question is somehow implicit in your assertion?
Or are you merely filing a progress report?
Mike Halloran
Pembroke Pines, FL, USA
- Thread starter
- #6
MikeHalloran
Mechanical
Eight plies should give you a _very_ sturdy kayak, unless the glass cloth is extraordinarily thin/light.
How far do you intend to carry it?
Mike Halloran
Pembroke Pines, FL, USA
How far do you intend to carry it?
Mike Halloran
Pembroke Pines, FL, USA
Mike that's 8 plies of 300 gram plain weave per sq metre = 2400 grams per meter. That stuff will be about 0.010" thick per layer giving a layup about 0.08" whilst over doing it by about 2 layers I do not think his Kayak will be too heavy.
Mike c’est 8 plis d’armure de 300 grammes par metre carre’ = 2400 grammes par metre. Que les choses seront environ 0,01 (.24mm) épaisseur par couche donnant un layup environ 0,08 (2mm) tandis que sur le faire par environ 2 couches, je ne pense pas que son kayak sera trop lourd.
B.E.
You are judged not by what you know, but by what you can do.
Mike c’est 8 plis d’armure de 300 grammes par metre carre’ = 2400 grammes par metre. Que les choses seront environ 0,01 (.24mm) épaisseur par couche donnant un layup environ 0,08 (2mm) tandis que sur le faire par environ 2 couches, je ne pense pas que son kayak sera trop lourd.
B.E.
You are judged not by what you know, but by what you can do.
Chicopee,
A lot of the very early plastic Kayaks were made from woven Glass fiber, chopped strand mat and polyester resin. They were heavy, but they were a big performance boost over the wood , and canvas Kayaks they were replacing. The polyester resin was replaced with epoxy resin and more layers of thinner glass fiber woven cloth enabling the weight to be further reduced. The latest iterations of hand laid Kayaks and Canoes use Kevlar and carbon fiber lay ups for maximum strength and rigidity with minimum weight. These kayaks can get down to Design weights of 38 to 45 pounds ( 20.3 kg) However their dis- advantage is the price Very often pushing $1800 to $2000 .
This industry was turned on its head by the Roto Molded Kayak. Made from HDPE or Polypropylene. A closed pre heated mold with a premeasured quantity of plastic pellets was slowly turned while the plastic was evenly distributed over the mold surface. This was/is allowed to cool and a lightweight plastic kayak emerges just about ready to use. Far less cost and less need for skilled labor. these Kayaks are very often available for less than $400, and are not much heavier than the carbon fiber , Kevlar kayaks.
B.E.
You are judged not by what you know, but by what you can do.
A lot of the very early plastic Kayaks were made from woven Glass fiber, chopped strand mat and polyester resin. They were heavy, but they were a big performance boost over the wood , and canvas Kayaks they were replacing. The polyester resin was replaced with epoxy resin and more layers of thinner glass fiber woven cloth enabling the weight to be further reduced. The latest iterations of hand laid Kayaks and Canoes use Kevlar and carbon fiber lay ups for maximum strength and rigidity with minimum weight. These kayaks can get down to Design weights of 38 to 45 pounds ( 20.3 kg) However their dis- advantage is the price Very often pushing $1800 to $2000 .
This industry was turned on its head by the Roto Molded Kayak. Made from HDPE or Polypropylene. A closed pre heated mold with a premeasured quantity of plastic pellets was slowly turned while the plastic was evenly distributed over the mold surface. This was/is allowed to cool and a lightweight plastic kayak emerges just about ready to use. Far less cost and less need for skilled labor. these Kayaks are very often available for less than $400, and are not much heavier than the carbon fiber , Kevlar kayaks.
B.E.
You are judged not by what you know, but by what you can do.
The biggest problem with this whole conversation is that it is really in the wrong forum , It should have been posted in the Composite engineering forum. And since the original poster is a native French speaker , it could also have been posted in Translation assistance for Engineers.
B.E.
You are judged not by what you know, but by what you can do.
B.E.
You are judged not by what you know, but by what you can do.
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