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Board index Development & Design Rigs & Sails Boom Section/thickness

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Boom Section/thickness

Postby andrewb on Wed Jan 16, 2008 8:37 pm

What is the preferred boom section? The rules state 1.5, 2, & 3 mm wall thickness are allowed. This gives quite a range of weight to length of aluminium tube required (1.3, 1.7, & 2.5 kg respectively).
andrewb
 
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Postby A Trace of Blue - 1666 on Sun Sep 14, 2008 11:59 pm

Andrew,

The problem with a Sabre is not so much the thickness and final weight. You need to find a 50mm section that is of a grade of aluminium that will not bend in a good blow.

I saw a number of nicely bent booms at the last Vic states. This is the draw back of having a loose footed rig with the mainsheet near the centre of the boom.

Not sure where you are, but there is a mob in Moorabbin (Vic) - Litespars I think they are called, who supplies the section in higher tensile strenght grades of aluminium than what most of the chandlerys do. More expensive though. My wife has bent two booms of cheaper grade sections in her various boats.

Not sure what grade of aluminium the Association supplied sections are.

Regards . . .
Peter Wilcox
1666 - A Trace of Blue

God Still Sails a Payne-Mortlock Sailing Canoe!
A Trace of Blue - 1666
 
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idea

Postby Slow Hand on Mon Sep 15, 2008 9:31 pm

hi,
i havr a mast top section and boom leftover frm my 'jaunt' with lasers!
would they be good to convert to sabre booms?
devil woman
1724 nui uma
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Postby A Trace of Blue - 1666 on Mon Sep 15, 2008 10:45 pm

As long as it is of size, 50mm it believe, not sure of the tollerences it should be good.

Regards . . .
Peter Wilcox
1666 - A Trace of Blue

God Still Sails a Payne-Mortlock Sailing Canoe!
A Trace of Blue - 1666
 
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Joined: Wed Nov 30, 2005 10:16 pm
Location: Bittern - Victoria


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