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post #11 of 36 Old 05-20-2016 Thread Starter
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Re: Mast dilemma

Faster, I'm on my phone, but if you know the Pardey's ex-boat "Taleisin", then you'll see my boat. It's 95% similar.

Capta, I agree. I'm trying to get in touch with people who've worked at the yard. They have been out of been business for quite some time. That's a good starting point, true. It was that same yard however who built the mast.
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Quote:
Originally Posted by overbored View Post
Don't see how any one can make an educated decision with that little of information. what is the boat made of. is it wood and you want to
be an all wood boat. why are there two spars? some one built the glass one for some reason. most likely because wood masts are a pain in the ass to paint or varnish. I take it this is not a whale blubber on the spar type of gaff rig and the PO wanted it to be easier on maintenance and look like wood. was the boat ever sailed with either of the spars? is there a designer to ask? did they design and build a fiber glass mast to be weaker then the wood one? did they design it because it would break before the wood one? most likely not and the glass one was designed to be better in all ways over the wood spar.
All good questions. Fg hull. The builder (Norwegian) traveled to the states in the 80's, learned fg tech, traveled back to Norway to build Colin Archer's in GRP. He also built about 150 of the ex boat "Taleisin" owned by the Pardey's. Sadly, the yard went bankrupt. The mast was built at the yard in the mid 90's as I'm told. The wood mast I bought and have been pampering it for several years.
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Originally Posted by bobperry View Post
The choice of mast is not a good place for guessing. I have never seen a grp mast.
True, It's why I thought to throw the question out in here.
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post #14 of 36 Old 05-20-2016
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Re: Mast dilemma

I'd sit down with someone who knew how to calculate the required moments of inertia for your spar.

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post #15 of 36 Old 05-20-2016
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Re: Mast dilemma

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Originally Posted by bobperry View Post
I'd sit down with someone who knew how to calculate the required moments of inertia for your spar.
But even with that knowledge in hand, wouldn't you need the details of the FRP mast's layup to figure out it's moments?

Maybe you can get a halfway decent guess just from its dimensions + wall thickness... They probably didn't make it out of dirty socks and old tee shirts.
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Re: Mast dilemma

Chris,

I am not saying it can't be done, but fiberglass is incredibly flexible stuff. Making a mast out of it is just silly on its face. To have enough stiffness the wall sections would need to be really thick, probably cored, and weigh substantially more than an aluminium, or probably even a wooden mast.

I simply can't see anyone who knows anything about fiberglass choosing it as a material, which leads me to believe that either 1) it was not made by a yard as a mast, or 2) if the designer specced it he was an idiot.

It would be like speccing a keel to be made out of styrafoam I guess you could, but why in world would you want to.

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Re: Mast dilemma

Use them both and convert her to a Schooner. (well there has to be a contriarian in every post right!?!?!) I would check with the orginal owner of the fiberglass seems perhaps more set up as a marconi rigged sloop rather than gaff? Or even a fractional rig?

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Re: Mast dilemma

there was a day when they said you can't build a stiff boat hull out of fiberglass it just will not work. I built a fly a fiber glass airplane and it is all about fiber orientation. A fiberglass mast is very doable . they were expensive to build and the resin technology was being developed at the same time as carbon fiber technology so now carbon makes more since. if they had not developed carbon fiber and had todays resins masts would be fiberglass.

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Quote:
Originally Posted by miatapaul View Post
Use them both and convert her to a Schooner. (well there has to be a contriarian in every post right!?!?!) I would check with the orginal owner of the fiberglass seems perhaps more set up as a marconi rigged sloop rather than gaff? Or even a fractional rig?
The mast came off a gaff rigged sister ship. With a 29' hull, schooner is out of the question . Monday, I'll try to track down the builder. He's got to still be in Norway somewhere.
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Quote:
Originally Posted by Stumble View Post
Chris,

I am not saying it can't be done, but fiberglass is incredibly flexible stuff. Making a mast out of it is just silly on its face. To have enough stiffness the wall sections would need to be really thick, probably cored, and weigh substantially more than an aluminium, or probably even a wooden mast.

I simply can't see anyone who knows anything about fiberglass choosing it as a material, which leads me to believe that either 1) it was not made by a yard as a mast, or 2) if the designer specced it he was an idiot.

It would be like speccing a keel to be made out of styrafoam I guess you could, but why in world would you want to.
It's flexible which is one of the reasons for my inquiry here.im wondering if someone has actual experience with them. It's lighter than my spruce mast I also have on hand. Using it would take away a lot of weight aloft which is like to do, but is this the answer?
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