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Photo 20211123_164336.jpg updated #photo-notice

[email protected] Notification
 

The following photos have been updated in the KD 122 italy two album of the [email protected] group.

By: Multihull Dynamics <pat@...>
 

Hi Domenico

You are a hard worker, and it looks very good.
Thanks for the photos.
Ciao
Bernd
 

Get ready my friend the best is yet to come with the A-frame mast ;-)
?
The whole construction of the mast will be documented here by me throughout the forum so that everyone can get ideas ...
Hi Bernd
 

Interesting.
I am searching for reasonably priced carbon pipes. I have found some till a diameter of 110 mm.?
Aluminum is at the moment very expensive too. But there is some time.?
In any case, I like that you will try to build the mast.?

Ciao

Bernd?
 

have no problem finding aluminum tubes in Italy. For the tubes of the Duo 900, two 180mm and two 100mm tubes arrived in 20 days. 6m long pipes with diameter from 60mm to 200mm there are no problems.
We had thought of using 120mm x 5mm tubes by positioning the mast vertically and fixing it with two stays at the stern of the two hulls. We go over 150kg
?
Now we are directing a composite structure, putting 120mm PVC pipes inside, closing with 6mm oval shaped marine plywood and then carbon fiber and glass coating.
Hi Bernd
 

Hi Domenico

Good thinking to use composite structure for the A-frame masts. I was contemplating also to goo in this direction.
Because the cross braces are much more say and quick to make and connect to the mast parts. In the end. The mast will be a lot lighter too.

Cheers

Bernd
 

Insert empty PVC pipes inside, starting from the base with the 120mm, center 100mm and in the end 80mm divided to the length of 13m.
I show you a drawing as I thought of it.
Hello

Base A-frame.jpg

 

Hi Domenico

Do you know that you can not glue PVC material, besides PVC to PVC?

Use good laminated wood instead.

Cheers

Bernd


Le lundi 29 novembre 2021, 00:33:42 UTC+1, domenicodispaldro@... <domenicodispaldro@...> a ¨¦crit :


Insert empty PVC pipes inside, starting from the base with the 120mm, center 100mm and in the end 80mm divided to the length of 13m.
I show you a drawing as I thought of it.
Hello

Base A-frame.jpg

 

I was sending you a private mail, concerning your sketch

Bernd
 

I thought not to glue them but to graft them together with the sealant.
Then close with the multilayer giving the oval shape and it fits by itself ...
Or else the 12cm x 2.5cm internal wooden crossbar that goes all the way to the top ...
bye
 

Hi Mike
I can not remember sending you a message. Strange and forget it.
But report when this happens again. Then there is something amiss

Cheers

Bernd
 

Hi Bernd I have posted more photos on the construction of the KD122, works which include carbon fiber, fiberglass and antivortex fin installation.
On 10 January 2022 we start with the hull finishing with peel ply and then we turn the hulls for the continuation.
Meanwhile in the last days before the break I started drawing and cutting a section of the mast A-frame, I open a new topic on the construction of the mast.
Bye
 

Link foto


/g/K-designs-Multihull-Sailboats/album?p=Taken%2C%2C%2C20%2C1%2C40%2C0&jump=1&id=269251
 

Hi Domenico

Good progress, have I to tell you that? ;-))
you know by yourself.

Have a nice holiday.
Ciao
 

Hi,?
Amazing progress,? very impressive.?
Happy holidays?

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