AD 14 Mast Question

Sail Boats 15' and up. Please include the boat type in your question.
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gonandkarl
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AD 14 Mast Question

Post by gonandkarl » Sun Feb 21, 2016 3:36 am

Hi,
As I will fit my boat with a free standing straight 6.1 m rotating aluminium mast I am right now working on the mast shoe and mast partner I am wondering if I should use a bolt just under deck below the mast partner to push thru the mast to make sure the mast cannot be lifted up by the wind ?
Or is that not possible in any case because of the weight of the mast ? ( It weighs undressed 8 KG )
The mast shoe is only 15 cm deep and my fear is that a small jump up and it would be out of it.
I cannot arrest the mast in the mast shoe with a thru bolt because then it could not rotate.
Greetings from Karl ( Austria )


All pictures of Micro Petrel AD14 and FS13 :

http://gallery.bateau2.com/index.php?cat=87433

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jacquesmm
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Re: AD 14 Mast Question

Post by jacquesmm » Mon Feb 22, 2016 10:07 am

I don't show a full free standing mast. Even if you rig her that way, the mast is held down by the halyard and the downhaul. The main halyard goes to the bow and the downhaul to the partner.
In the lug sail version, the plans do not show a downhaul but there should be a line or tackle pulling the boom down at the mast, tied to the partner, not the mast.
Do not return your running rigging to the mast itself and the problem will not exist.
If for some reason, you can;t do it that way, I don't like the idea of a hole through the mast but you could, after rigging, clamp a ring to the mast, inside, under the partner, a collar.
Jacques Mertens - Designer
http://bateau.com

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gonandkarl
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Re: AD 14 Mast Question

Post by gonandkarl » Mon Feb 22, 2016 1:01 pm

Hallo Jacques,
Thank You for the quick answer. I will do it like you suggested and I also will make a clamp on collar under deck.
Greetings from Karl.
All pictures of Micro Petrel AD14 and FS13 :

http://gallery.bateau2.com/index.php?cat=87433

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jacquesmm
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Re: AD 14 Mast Question

Post by jacquesmm » Mon Feb 22, 2016 1:31 pm

Does that mean you will have a chinese lug sail? A junk sail?
Jacques Mertens - Designer
http://bateau.com

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gonandkarl
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Re: AD 14 Mast Question

Post by gonandkarl » Tue Feb 23, 2016 2:32 am

Hi Jacques,
Yes I have sawn the sail already and made boom and yard with fibreglass and carbon sleeves. I want to make a rig similar to
Pilmer (1975) a sailing boat owned by H.G.Hasler for which he designed the single chinese lug rig.
In the case it wont work out I can rig any other sail on my standard light alloy mast. That is why I also install the braces and chain plates if I want to support the mast.
Greetings from Karl
All pictures of Micro Petrel AD14 and FS13 :

http://gallery.bateau2.com/index.php?cat=87433

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jacquesmm
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Re: AD 14 Mast Question

Post by jacquesmm » Tue Feb 23, 2016 9:25 am

That rig is heavy but with carbon fiber spars and battens, it may work on a light boat. Keep us up to date on the performance.
Jacques Mertens - Designer
http://bateau.com

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