Hi!
On Monday I sailed for the first time with the new sail, this time sewn according to the Slieve's method. I can see a big difference - the dead zone decreased from 135deg (old sail) to less than 110deg (new sail). This is probably also thanks to the fifth panel (toppanel), slightly larger surface area of each panel compared to the previous sail (Origami SJR), and greater cambers in the new panels. And certainly thanks to the greater tightness of the sail.

The photo (from livecam) isn't very clear, but everyone says the sail with the toppanel looks more professional.

I'll try to measure the dead zone without one panel, which will help determine how much the four panels of the new sail (SJR) differ from the four panels of the old sail (Origami without toppanel). Unfortunately, I don't know when the weather will allow for this - rain is forecast for now.

As we know - greater camber means more thrust but also more heel, so I had to sit on the side as "ballast". Trade-offs.

For land testing I used a stand with stays. The mast with sail weigh 8 kg together, so it's no problem to put the mast with sail into the stand.
I wonder if such a stand couldn't be used as a device for measuring different sail configurations. It could be equipped with devices for measuring tensions in the stays and a simple recorder (like Arduino).
But that's a project for long winter evenings, not now!

Sewing the new sail took much more time than quickly gluing simple Origami panels for the old sail. I'm afraid this time the bluetarp (which I used again) won't last two seasons. Bluetarp doesn't like needle punctures. Nor unpicking!
It'll be good if the new sail lasts one season. So, if  serious damage happens - I'll go back to using the old sail.

Ups ! I must have made some linguistic slip? It's not hard to make such a slip in an international environment. I guess that was a bit funny... Fortunately, junkers are tolerant and have a sense of humor! Sorry !  It would certainly be safest to sit "on my bottom" in front of a computer and do keyboard sailing.

But indeed - after tacking, gybing, all I need to do is move the lower part of my body across the floor of the boat from side to side.

The idea of ​​a bean bag sounds interesting!

Regards !

PS however, it's good that google translator can't read "what the author means"

Instead of enjoying the last warm days of the year, I have to stay indoors and swallow aspirin. Kismet! I hope I can use at least the beginning of next week, when it is supposed to be relatively warm. It seems that the next days like this will not be for half a year or even longer!!!

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Indeed, I have heard something about the "skin on frame" technology. I even watched this film once.

I found a supplier of materials in Poland

and another designer and probably a supplier (in Germany). There is also a project of a slightly larger boat, with a centerboard case, although I like the pram, i.e. Stasha, more.

I don't know if it is possible to combine this material and how to repair any damage.

Maybe it would be possible to find cheaper materials, I haven't looked yet. If the boat (Stasha) were to weigh 10 kg (i.e. halves of about 5 kg), then there really wouldn't be a problem with taking it off the roof rack.

I don't really know how strong the board attachment is. One side (center?)board. Hmm. I sailed with one board, because I happened to lose and sink one, so before I made a new one from an old rudder blade - I sailed with one. It's possible, but still a bit less comfortable.

It would also be good to think about some buoyancy tanks. These could be inflatable tanks, tied to the outside of the sides, or possibly short internal tanks to be attached inside the boat by the sides. You could lean on them while sitting inside.

However, apropos sitting on the bottom – in my boat I usually sit on the bottom (metacenter), but sometimes I have the opportunity to stretch my legs when the wind is not too strong and I do not have to pay attention to ballasting.

The ability to stretch your legs on such a small boat is really important, believe me!

That's why I was thinking about something similar to the Seahopper. There are similar designs for amateur construction. In such a boat, you could even think about a 1-2 day camp with a tent on the boom. My modifications would consist of adding inflatable buoyancy tanks mounted on the outside, and an additional PVC skin on top of all that, which would provide basic waterproofing and extra stiffness.

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So as not to tire you - I will end my post here, although I am preparing a further, more detailed part, although I do not have all the details well thought out yet. If I had everything thought out already, I would simply start building right after the season.

Interesting design (Stasha). I've seen it a few times, but I didn't focus on it because the technology is not well-known.

Do you know anything more about the company (apart from the website address), how many units were made and has anyone tested the boat in more detail?

There aren't many videos, the only video of the construction (from 4 years ago) that I found ended halfway through (part 2 missing).

Someone could probably also have a lot of complaints about my boat, but I've already tested it on a much smaller lake and I think I've learned its weak points, which I've mostly eliminated (unfortunately, not all of them).

I'm thinking about building something similar to a seahopper with various modifications. Or possibly introducing modifications to the current boat.

We don't see these transportable boats sailing in New Zealand.

You won't see one here either, it's a relic now, almost everyone sails on bigger and bigger GRP boats. Folding sailboats were probably a niche product everywhere. But if you look around, you'll definitely find a folding sailboat, oh I've already found one - e.g. Tiwal

Thanks for the wishes, I wish you good luck and good health too!