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Solving the Ljungström gooseneck problem or how to attach the boom when the mast is rotating.
Sven Yrvind

Solving the Ljungström gooseneck problem or how to attach the boom when the mast is rotating.

The Ljungström rig invented in Sweden by Fredrick Ljungström in 1933 have some very desiriable properties. Foremost is the ease to reef. The freestanding mast is just made to rotate to pull on a rope, like a furling jib. This rotation also makes it possible to get outstanding aereo properties on the...
  • Feb 28, 2022
  • Language: EN
  • Play Time: 00:04:02
To ruggidize I am adding twin keels for more stability and better beachlanding.
Sven Yrvind

To ruggidize I am adding twin keels for more stability and better beachlanding.

NOW I ADD TWIN KEELS TO RUGGEDIZE EXLEX Twin keels have been on my mind for a long time in fact since 1980 when I was up in Maine and John Letcher help me to draw a nice twin keeler. I worker on her for three years but things interfered and she never got finished. Boats with bow centerboards took ov...
  • Feb 27, 2022
  • Language: EN
  • Play Time: 00:04:53
Reflections on using the rudder as lateral area. It have worked well in the past.
Sven Yrvind

Reflections on using the rudder as lateral area. It have worked well in the past.

Amfibie Bris was the first cruiser using the rudder as lateral area. Earlier I had built an open boat to test the idea and it had worked very well. Later several people built boats using the same principle from drawing I made in collobaration with Rolf Eliasson co-author of Principles of Yach Design...
  • Feb 26, 2022
  • Language: EN
  • Play Time: 00:03:34
Flaking is how I will store the rope and chain anchor rode with no drum winch.
Sven Yrvind

Flaking is how I will store the rope and chain anchor rode with no drum winch.

Figure 8 flaking is a good way to avoid entanglement of the chain rope anchor rode. I built a device with two pegs on Bris in Marthas Vineyard 1976. It worked well so now with no drum winch I will use that Idea again. Two pegs will keep the rode in place and secured with a string it will stay tangle...
  • Feb 25, 2022
  • Language: EN
  • Play Time: 00:02:29
Ropes and chain and more about the hawse tail.
Sven Yrvind

Ropes and chain and more about the hawse tail.

i now got a good idea of how to deal with the long rope and chain for the hawse tail and how to get space in the cockpit. I will not use a drum winch as was the first plan. There was not space for it and to put it on the deck is not good seamanship. There its center of gravity would be much higher. ...
  • Feb 24, 2022
  • Language: EN
  • Play Time: 00:04:15
Testing the functional drum winch. The result was not was I was hoping for.
Sven Yrvind

Testing the functional drum winch. The result was not was I was hoping for.

Today the epoxy on the functional mock up of the drum winch had cured. I shaped it and screwed the pieces together. I tried several positions. Unfortunatially it took up to much space. Hindsight is 20 20. I only needed 50 - 60 cm more 2 feet. If I had squesed a bit I could have built a boat that muc...
  • Feb 23, 2022
  • Language: EN
  • Play Time: 00:03:23
A short video about a third option for steering, steering in close quarters.
Sven Yrvind

A short video about a third option for steering, steering in close quarters.

The wheel in the cockpit was not comfortabel to use when standing in the cockpit hatch. Here is a way a yoke tiller with steering lines. I have succesfully used steering lines 1989 2007 2011 2018 2020 2021. It will work well as a compliment and it is a simple addition to the Butterfly quadrant. For...
  • Feb 22, 2022
  • Language: EN
  • Play Time: 00:00:57
The drumwinch for the hawse pipe tail. A first mock up. Improvements neccesari.
Sven Yrvind

The drumwinch for the hawse pipe tail. A first mock up. Improvements neccesari.

This is a mock up video of the placement of the mock up drum winch for the hawse pipe tail. It needs improvement. I got an idea but I realise that it is best to make a functional drum winch with the right dimensions. I was sitting in a good position but the muddy anchor rode was passing over me drip...
  • Feb 21, 2022
  • Language: EN
  • Play Time: 00:01:27
It turned out that the Quadrant thing opened new ways
Sven Yrvind

It turned out that the Quadrant thing opened new ways

Here is one twice as strong it it does have two lines. It works just as well with one line is cut
  • Feb 20, 2022
  • Language: EN
  • Play Time: 00:07:26
It turned out that once I started to think about the Quadrant betterment was possible. I am glad.
Sven Yrvind

It turned out that once I started to think about the Quadrant betterment was possible. I am glad.

I had a very interesting day and night. Once I started to think of the different configurations of blocks quadrants and drum steering wheels new possibilities turned out. Now after the days work I kind of got a Darling I call her the Butterfly quadrant. Of course its not a quadrant at all rather a s...
  • Feb 20, 2022
  • Language: EN
  • Play Time: 00:07:26
More about the aft hawse pipe and how to prevent chafe on the rope/chain tail/drouge
Sven Yrvind

More about the aft hawse pipe and how to prevent chafe on the rope/chain tail/drouge

I have been lucky with Elisolation in Laxå. The G 11 pipes for the hawse pipe came very quickly and they are superstrong. I persuaded one of the persons in the building, a big guy 110 kilos to hang out on a lever very much longer than the rudder axis on a testpiece much less diameter and less wall t...
  • Feb 19, 2022
  • Language: EN
  • Play Time: 00:03:21
Space restrictions have persuade me to give up tiller and to use a rudder quadrant.
Sven Yrvind

Space restrictions have persuade me to give up tiller and to use a rudder quadrant.

A boat with a canoe stern have less space aft and if the boat is decked and the steering is belov deck the tiller cannot swing outwards. However quadrants are interesting the cables come of as tangents from the center line. This means that there are more space for the lines and and also that the max...
  • Feb 18, 2022
  • Language: EN
  • Play Time: 00:03:10
15 betterments for Exlex the sailing canoe.
Sven Yrvind

15 betterments for Exlex the sailing canoe.

To summarize the betterments in the new boat Exlex the sailing canoe so far here is a list of 15 items that will enhance performance and practipality. I will put the text on my website Yrvind.com so that you by reading hopefully will understand it well. On Yrvind.com also you can support my project ...
  • Feb 17, 2022
  • Language: EN
  • Play Time: 00:05:52
The new drouge/anchor system with a tail through a hawse pipe in the sern. A bettering.
Sven Yrvind

The new drouge/anchor system with a tail through a hawse pipe in the sern. A bettering.

The abouve link is to a video I made in Horta harbor Fayal Azores sommer 2021. It is also about the idea of achoring from the stern At about 1 min 20 sekund you can see a boat sneaking about. The boats at anchor do that all the time. It puts their broadside to the wind increasing the resistance and...
  • Feb 16, 2022
  • Language: EN
  • Play Time: 00:05:52
Some of the reasons why Exlex the sailing canoe is a double ender.
Sven Yrvind

Some of the reasons why Exlex the sailing canoe is a double ender.

There was a question about why I chose to make a double ender. Nowadays close to every production and amateur boats are not double enders. If so many do not choses double ender is there something wrong with them. They have disadvantages but it is more burocratic. For decades lenght have been penelis...
  • Feb 15, 2022
  • Language: EN
  • Play Time: 00:02:06
The rudder axis a 50 mm steel pipe mock up. Results exceeding expectations.
Sven Yrvind

The rudder axis a 50 mm steel pipe mock up. Results exceeding expectations.

Today I bought a 5o mm steel pipe as a mock up for the rudder axis. For a long time I have beeb uneasy about the results. It was a relief that it turned out so well. With the aft end of the boat resting on the rudder axis the draft was only 45 cm or 1foot 6 inches just up to my kneecap. (I find it c...
  • Feb 14, 2022
  • Language: EN
  • Play Time: 00:03:01
Today a big chance I have killed my darling
Sven Yrvind

Today a big chance I have killed my darling

Today a big change. I have killed my darling. The mizzen is gone. Exlex will not be a canoe yawl. Exlex the sailing canoe is her new name. Why? I did some estimates on lead in this case I use the word in a geometrical sense. That is how far the center of effort is in front of the center of lateral r...
  • Feb 13, 2022
  • Language: EN
  • Play Time: 00:03:57
Rethinking the rudder. G 11 pipes gives new ways to design the rudder due to its immense strenghts.
Sven Yrvind

Rethinking the rudder. G 11 pipes gives new ways to design the rudder due to its immense strenghts.

I got a short sample of G 11 rod and pipe. Here I am testing the rod with a 70 cm long steel pipe. I am about 70 kilos with 5 kilo clothes and shoes. I also persuded a freind 110 kilos the rod did not break. The rudder will not be more than 40 cm below the hull. Center of pressure will be some 20 cm...
  • Feb 12, 2022
  • Language: EN
  • Play Time: 00:02:16
History of my bow centerboard. starting in the middle of 1980-s
Sven Yrvind

History of my bow centerboard. starting in the middle of 1980-s

There is less space in a small boat than a big. To find a good place for the centerboard - the centerboard is one way of preventing leeway - I put it in the bow. The rationale was that the combined center of effort of centerboard and rudder was between them proportional to thier areas and angle of a...
  • Feb 11, 2022
  • Language: EN
  • Play Time: 00:06:10
Ratchet and Divinycell is here
Sven Yrvind

Ratchet and Divinycell is here

Yesterday I was lucky. Just before closing shop two very different items arrived. The ten stainless steel 316 ratchets from Lyft och Surrning. They gave me a very good price but still it was much money for a pensioner. Still nothing is to good for my boat. Only the very best. Secoind item was more D...
  • Feb 10, 2022
  • Language: EN
  • Play Time: 00:03:42
Weather, temperature and gales near Cape Horn also more on the mowing lead
Sven Yrvind

Weather, temperature and gales near Cape Horn also more on the mowing lead

The US have pilot charts, the UK have routing charts. Their purpose is to help the navigator to plan his passage. The US ones used to be very good. I did study them a lot befere my 1969 sail to Rio de Janeiro. There is no copyright on US govement publications. The idea is that if anyony can copy and...
  • Feb 09, 2022
  • Language: EN
  • Play Time: 00:06:44
Adapting the lead weights by hole drilling and doing more cupper pipe bends inserts
Sven Yrvind

Adapting the lead weights by hole drilling and doing more cupper pipe bends inserts

As said by attaching the strings to the lead weights I only need half as many strings, more the strings are always out of the way. The first roof on the lead boxes are in place. Many things on my mind made me forget to plug the pipe holes while doing the epoxy. A small amount of epoxy got into some ...
  • Feb 08, 2022
  • Language: EN
  • Play Time: 00:02:03
Peter is back. Some details on stovage below bed and lead boxes.
Sven Yrvind

Peter is back. Some details on stovage below bed and lead boxes.

Peter is back. Now the videos are getting better. Here is an idea I used on the two previus boats with succes to reduce the beam I screw them down into. Now I have a new improvements on the lids. Tufnol is inserted to take the pressure of the countersunk screws. If this is not clear keep watching. ...
  • Feb 07, 2022
  • Language: EN
  • Play Time: 00:03:06
Routine and one more iteration of the lead boxes.
Sven Yrvind

Routine and one more iteration of the lead boxes.

With hindsight I realise that I should have been smarter, but luckily a step back proved to be a leap forward. When bending the cupper pipes they came out with different inner diameters and I was not prudent enougf to check each bend and so I was kind of stuck with it. But. I went from 6 millimeter ...
  • Feb 06, 2022
  • Language: EN
  • Play Time: 00:02:16
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