24 foot deep V Proa build.

 
Johannes
 
Avatar
 
 
Johannes
Total Posts:  664
Joined  16-11-2011
 
 
 
23 July 2013 02:14
 

I am making some progress on my 24 foot vaka and my 16 foot ama.
I start a new thread as this is a real 24 foot proa, and not some scale-model or theoretical discussion.
Just want to post a picture to get this thread going.

Cheers,
Johannes

[ Edited: 25 July 2013 02:11 by Johannes]
 
 
skyl4rk
 
Avatar
 
 
skyl4rk
Total Posts:  114
Joined  01-11-2011
 
 
 
23 July 2013 04:40
 

Looking forward to this!

 
Luomanen
 
Avatar
 
 
Luomanen
Total Posts:  468
Joined  05-11-2011
 
 
 
23 July 2013 11:12
 

Allright Johannes! 

Bring it!  I’m super excited to see how this turns out.

 
TINK
 
Avatar
 
 
TINK
Total Posts:  238
Joined  08-03-2013
 
 
 
23 July 2013 23:17
 

Good luck Johannes

Do you have a final design sketch? What rig? And any other details when you get a chance


Tink

 
 
Skip
 
Avatar
 
 
Skip
Total Posts:  317
Joined  11-11-2011
 
 
 
24 July 2013 08:32
 

Here’s hoping you get as much joy out of your 24’/16’ proa as I did mine.

Waiting to start another,
Skip

 
Johannes
 
Avatar
 
 
Johannes
Total Posts:  664
Joined  16-11-2011
 
 
 
24 July 2013 12:57
 

Thanks for kind comments everyone!!!

Do you have a final design sketch? What rig? And any other details when you get a chance

I hope I can post some more info tomorrow.

I am building this deep V instead of the ASP/Barge I have been testing the last year.
I am using the 7 mm plywood for the vaka.

Cheers,
Johannes

 

 
 
gearbox
 
Avatar
 
 
gearbox
Total Posts:  66
Joined  31-05-2013
 
 
 
24 July 2013 14:37
 

Very exiting news!
Me too am looking forwards for more details on the plans, and to see it all completed and shunting away!
Best of luck in your build Johannes!

 
Johannes
 
Avatar
 
 
Johannes
Total Posts:  664
Joined  16-11-2011
 
 
 
25 July 2013 02:42
 

Thank you Gearbox!!

First a little disclaimer here.

We all know that building a boat can take some time. It will not happen overnight, even though I would like it to.
I am trying to complete this vaka as fast as possible. Even though my goal is to sail it this summer (fall), I would be surprised if I succeed.


Everyone should know by now that I always strive for simplicity. I don’t want detailed plans or eleborate worksheets that needs close adherence to give a good result.

I always try to use simple geometrical shapes and a few simple mathematical formulas that is easy to scale and adapt to different requirements.
In this case the simple “V"shape is combined with a circular arc bottom shape. It is about as simple as I can make it. I try to stay with simple even parts of available materials, in this case plywood. It is going to be 1/2 sheet plywood high sides (60 cm). 3 sheets plywood long (732 cm minus the length lost by bending the sides).
Since these simple geometrical shapes gives a great structurell stiffness and strength I can use thinner plywood and get a lower weight, without sacrificing ruggedness.

I hope pictures of the vaka as it is being build is enough for now. If it is a great success I might draw some better plans and post them here. Since this vaka is a very simple shape, I believe anyone can build it just based on some pictures and numbers.
Most of my “plans” looks like the picture below.

Cheers,
Johannes

 
 
Johannes
 
Avatar
 
 
Johannes
Total Posts:  664
Joined  16-11-2011
 
 
 
25 July 2013 02:46
 

Here I am having fun with epoxy. I am joining the plywood-sheets to hull-sides.

 
 
Johannes
 
Avatar
 
 
Johannes
Total Posts:  664
Joined  16-11-2011
 
 
 
26 July 2013 12:35
 

The two sides are joined with cable-ties.
Now I am waiting for my local epoxy-store to open on monday. I need some high density filler for the keel. I use one 21X21 mm wooden piece between the sides. Once I have filled the keel with epoxy + high density filler and fiberglass I will add one more 21X21 mm piece of wood on the outside. Then I will sand it smooth and cover it with several layers of fiberglass.

Tomorrow I will make some (all) the bulkheads and attache those.

Cheers,
Johannes

 
 
TINK
 
Avatar
 
 
TINK
Total Posts:  238
Joined  08-03-2013
 
 
 
26 July 2013 13:16
 

Great progress but more that that what a profile (on a proafile). As I said before, I will never own a J Class but this is as close as the common man can achieve

Fantastic work

Tink

 
 
pr1066
 
Avatar
 
 
pr1066
Total Posts:  83
Joined  18-12-2012
 
 
 
21 August 2013 04:58
 

Hi Johannes,

What a sweet shape for your vaka - and all with single curvature !

I think you may have a lot of followers waiting for any news you can manage to post.  :o)

Good luck with the build and fair winds when it’s on the water.

Peter

 
 
Johannes
 
Avatar
 
 
Johannes
Total Posts:  664
Joined  16-11-2011
 
 
 
22 August 2013 05:35
 

Thanks for kind comment pr1066!

Not much has happend these last couple o weeks. I have been tired and lacked motivation. I tend to do things in short rushes, and I am between two at the moment.

Today I managed to carry my ama outside so I could cover the bottom half with one layer 300 g/m2 fiber glass in epoxy. I added two layers 200 g/m2 glass over the keel for some wear protection.

Cheers,
Johannes