martes, 28 de septiembre de 2010

gunwhale rubbing strake and turned over


Turning the boat over is probably the most exiting moment of a build. I´m happy with the result so far. Lots of cleaning to be done....
At this moment it weighs 11 kg (24 ponds) and its very wobbly.


lunes, 27 de septiembre de 2010

jueves, 23 de septiembre de 2010

second plank


Second plank is on.
From the bottom, you can see how I make the planks, do a dry test, how the planks are glued and finally how the pram looks now.



miércoles, 22 de septiembre de 2010

Garboard strakes.


On the photos you can see from below:

bevelling the bottom plank in order to make a good gluejoint for the garboard strakes.

Making the gain with a rabbet plane.

Gluing the strakes.

And finally the way it looks now.

I forgot to take pictures of how I make the shape of the planks. This I will do with next pair of planks




martes, 21 de septiembre de 2010

Gluing on the bottom plank was pretty straight forward.
From the drawing i took the stations, cut a bit oversize and corrected directly on the jig.
Now its starting to a be a little boat.


Building jig


The building jig is pretty simple. 5 stations, where the 2 transoms and the center frame is going to be part of the boat. station, number 2 and 4 are momentary. The stringers are here in order to make the whole thing rigid. They´ll disappear when I start the planking.
I like building with a jig. If you make sure that the boat is lined up and square, then it´ll be so as well when finished.

Everything starts with a plan.





In this blog, I will be building a small pram, which is to be used as a tender on my small sailyacht, "Yggdrasil" , a swedish built Albin Vega 27.

The pram is a home design made to the size which I find will be acceptable to store on the foredeck of my boat. The size will be 220 x 113cm ( 7´3" x 3´8")
In designing the pram, I´ve tried to make a round bilge pram with max initial stabilty. Thats what you need in order to tow well and at the same time be reasonably ok to enter from the mother ship.
The design is a flat bottom with 4 strakes a side, which I find is enough in order to make a good shape and look good at the same time.

She´s going to be built ultra light in outdoor (WBP) quality plywood using the clinker ply method. I was lucky to find some 5mm 5 layer plywood which is very light and well made. It doesnt chip and seems to be well glued. I´m going to use it for the bottom planks. For the side planks I´m going to be using 4mm 3 layer plywood. I´m not going to epoxy the hull and I´m not applying glassfiber. This in order to keep weight down. My hope is that the pram will be relatively easy to lift on board the mother ship by one person and that it´ll carry me and doggy and sometimes an extra person. My goal is a max weight of 19kg (40 pounds)

The pram is going to be painted because 1 layer of paint is the same amount of work as 4 - 5 layers of varnish. I might be varnishing the transoms and the seats. We´ll see.