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Can you cut a carbon mast in half, then repair it?   Message List  
Reply | Forward Message #5687 of 6718 |
Re: Can you cut a carbon mast in half, then repair it?


  That's interesting.  I was thinking it would make more sense to cut it 39 feet from the bottom, so the join will be in an area of low stress. 

  Perhaps halfway is a good compromise: lower stress, and in an area where the bend is less important.

       - Mike


Daniel wrote:

Why cut the mast in half?

Why not cut it 39 feet from the top?
This will put the join closer to the bottom of the mast where not so much bend is needed

deepee
OZ



Tue May 5, 2009 11:32 am

jmichaelcraw...
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Message #5687 of 6718 |
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Hi, Still trying to figure a good rig for a boat that wants alot of sail area (Rare Bird-ish), but can still be shipping in a container. The 2 part masts sound...
Gardner Pomper
gardnerpomper
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Apr 29, 2009
12:33 am

I am of the philosophy, sailing is about getting places by boat, so i suppose shipping is OK. But you're from Chesapeake? So you can sail to Florida is only a...
Doug Haines
doha720
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Apr 29, 2009
2:01 am

Hi, I think I have mentioned in other posts that shipping is an insurance policy against me deciding that either the boat (or more likely the crew) is not up ...
Gardner Pomper
gardnerpomper
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Apr 29, 2009
12:39 pm

Hello Gardner and group,   Why wast all that money shipping a boat when you could just sail it wherever you want to go !   Here is a interesting trip you may...
George Kuck
chesapeake410
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Apr 29, 2009
2:13 am

Hello , I sent the wrong link, I meant to send this one.   http://www.arcticsolosail.com/index.php   (the one I sent by mistake was pictures of replacement...
George Kuck
chesapeake410
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Apr 29, 2009
2:24 am

F 40 rule required boats to fit inside container. Idea was that boats could easily be transported from one race location to another. Masts were always longer...
Arto Hakkarainen
ahakkara
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Apr 29, 2009
5:39 am

Hi, The difference is that F40 boats have supported masts, which are much easier to join than self standing masts. Windsurfer masts are commonly in two parts...
arttuheinonen@...
proabuilder
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Apr 29, 2009
6:03 am

Moi,   Mites venehommat etenee? Oletko saanut jo veneen veteen? Onko riki valmis?   Arto ... From: arttuheinonen@... <arttuheinonen@...> ...
Arto Hakkarainen
ahakkara
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Apr 29, 2009
6:27 am

A two-pat mast seems to be the best bet. A telescoping mast would also be a great fit, but that's a more complex design, and you would lost anti-turtle...
Mike Crawford
jmichaelcraw...
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Apr 29, 2009
12:37 pm

Hi, I think that we cal all agree that the 2 part mast is the "best" option. I am just not sure it is the most affordable option. I priced getting a mast built...
Gardner Pomper
gardnerpomper
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Apr 29, 2009
12:47 pm
Robert
cateran1949
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Apr 29, 2009
6:48 pm

Why cut the mast in half? Why not cut it 39 feet from the top? This will put the join closer to the bottom of the mast where not so much bend is needed deepee ...
Daniel
deepee58rabaul
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May 5, 2009
11:01 am

That's interesting. I was thinking it would make more sense to cut it 39 feet from the bottom, so the join will be in an area of low stress. Perhaps halfway...
Mike Crawford
jmichaelcraw...
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May 5, 2009
11:33 am

Hi All,I was away for a while...a long while,but I just got back and in to a very interesting subject-a two part mast!?...or,what Rob was talking about...
proadude
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Apr 29, 2009
12:56 pm

G'day, Definitely doable. Not sure which wil be the first boat to use it, but there are 3 thinking seriously about it. Gardner. Built it in one piece and if...
Rob Denney
proaharry
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Apr 29, 2009
1:54 pm

Rob,so what is the progress on the telescoping masts,was there any build yet?...or is it still just a theory? Regards...
proadude
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Apr 29, 2009
2:47 pm

Still a theory, but there are 3 owners considering using them....
Rob Denney
proaharry
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Apr 29, 2009
3:03 pm

I kind of understand the concept of the telescoping mast,but the practices is what makes me worry.You have to have a halyard lock(?),than any bending of the...
proadude
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Apr 29, 2009
3:19 pm

G'day, Yes, there is a halyard lock. Yes, it will be hard to lower when bent or under sailing loads. The great thing about an unstayed mast is that the sheet...
Rob Denney
proaharry
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Apr 30, 2009
3:07 am
Robert
cateran1949
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Apr 29, 2009
6:48 pm

robert,   what size winsurfer mast is that. to use a bigger sail on harriette than the 5sqm at moment, do i need a longer mast?   doug ... From: Robert...
Doug Haines
doha720
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Apr 30, 2009
2:39 am
Robert
cateran1949
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Apr 30, 2009
6:08 am

Interesting idea for higher rig with shorter mast:   http://outriggersailingcanoes.blogspot.com/   Look at the Tahitian Sprit Sail that was added to blog on...
Arto Hakkarainen
ahakkara
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Apr 30, 2009
8:34 am

And if you grind back a decent taper for the repair it will not even bend much differently. Cheers, Peter ... From: Rob Denney To: harryproa@......
Peter Southwood
pbsouthwood
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Apr 30, 2009
8:51 am

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