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Reply | Forward Message #1100 of 6619 |
Re: [harryproa] carbon masts

Maybe it is possible to have battens equipped with jaws like booms and gaffs have on classic boats.
Like Bolger's 'chinese gaff' rig, but with the addition of a luff pocket.
 
regards,
Rudolf 
----- Original Message -----
Sent: Saturday, October 23, 2004 6:18 PM
Subject: Re: [harryproa] carbon masts

I was thinking that a type of flow media could be placed between the layers of carbon fiber I have read of a structural core made specifically for this purpose. It is 1/8" thick.I do not know if a cored material would have advantages over a solid lamination but I have read that it has been used in mast construction. At any rate there is a non structural nylon  webbing that is used for solid laminations.  I should say that I have a Freedom 40 with wrap around sails that I have owned for 25 years .I like the wrap around sails as they provide a clean leading edge and do not require the mast to rotate.They are, however, heavy and do not allow for a substantial roach as full battens cannot be used. I have looked at Wharram's soft wing with a luff pocket and gaff but it is your rig for "hurry up" that I find most interesting.The mast height and sail area are about the same as each of mine.If the weight figure {110 lbs} is close and the materials ! cost is still about the same I would certainly be interested in purchasing the plans to build or better yet buy direct from you ,again depending on cost ,two production masts. I would be interested to know how you solved the problem of batten tension in a luff pocket and still allow the sail to be reefed.         Regards Tim


Sat Oct 23, 2004 5:29 pm

rudolfvdbrug
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Message #1100 of 6619 |
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I was wondering if resin infusion might be useful for fabricating the carbon strips. Is there any news of the new method for production mast building? When...
seatimsboat
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Oct 22, 2004
4:40 am

G'day, Infusion may work on the smaller masts, but I suspect it would be [problematic on laminates more than 3mm thick, unless the off axis material also...
Rob Denney
proaharry
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Oct 23, 2004
2:32 am

I was thinking that a type of flow media could be placed between the layers of carbon fiber I have read of a structural core made specifically for this ...
seatimsboat@...
seatimsboat
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Oct 23, 2004
4:18 pm

Maybe it is possible to have battens equipped with jaws like booms and gaffs have on classic boats. Like Bolger's 'chinese gaff' rig, but with the addition of...
R vd Brug
rudolfvdbrug
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Oct 23, 2004
5:34 pm

On a double sided sail with a wishbone like mine the out hall must be released to allow the wishbone to go up and down with the sail. The peak on a gaff must...
seatimsboat@...
seatimsboat
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Oct 23, 2004
8:46 pm

Just a thought but have you considered zipper reefing? They use it on skiffs if you can't afford a whole suite of sails. You simply unzip the lower panels off...
Tony Richardson
khsd16
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Oct 25, 2004
7:48 am

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