The Metamorphosis of Jasmine a 32ft Samson C-Mist - Updated 07.09.2021 - The Partners are modified and the steel collar and mast base completed.

  • 10 Jul 2021 07:46
    Reply # 10741637 on 10420926

    Not sure Graeme.

    The link/s work on my computer.

    Yup. That is the one Scott.

    Last modified: 10 Jul 2021 07:47 | Anonymous member
  • 10 Jul 2021 02:46
    Reply # 10741326 on 10420926

    I believe this photo essay is the one.

  • 10 Jul 2021 01:19
    Reply # 10741239 on 10420926

    This has the makings of a great thread, good on you.

    (sailmaker's thread?)


    Could you please check the link for "this little photo essay" - tantalising, but it doesn't seem to work on my computer.


    Edit: none of your other links are working now, either. Is it my computer - or have you shifted your folders, or something?

    Last modified: 10 Jul 2021 01:21 | Anonymous member
  • 10 Jul 2021 00:07
    Reply # 10741116 on 10420926

    Progress update:

    Sail making commences.

    Perhaps like many who decide to convert a vessel from Bermudan to JR the prospect of having to make the sail was the aspect that most scared me and yet perversely intrigued me at the same time.

    Not brave enough or patient enough to first teach myself how to operate a sewing machine that I did not even possess I first investigated the possibility of having Jasmine08s sail professionally made.

    The quotes from pro sailmakers and others motivated me to find some way of making it possible for me to do the job myself by enlisting the help of someone with the requisite sewing skills and a suitable machine.

    Enter Celesile who, whilst she has never made a sail, has made tents, awnings, sail covers, spray dodgers and much more.

    She agreed to bring her machine to the ranch so we could work on the project together.

    I would learn from her how to master the sewing and she would gain the experience of making a sail and the, hopefully successful, project would add another skill set to her arsenal.

    On Tuesday late afternoon I smuggled her and her gear across the border between Gauteng and North West Province just inside of which is my ranch.

    The next morning we commenced work on the project.

    This little photo essay shows the first two days of the making of a JR sail on a ranch in Africa.

    More to come soon.


    1 file
    Last modified: 13 Jul 2021 06:21 | Anonymous member
  • 27 Jun 2021 17:41
    Reply # 10704991 on 10420926

    Progress update:

    Cutting out some cancer.

    When I originally inspected Jasmine08 I noticed signs of water ingress at the two centre portholes on her port coach roof side above the saloon area.

    The seller explained that these portlights had inadvertently been left open for several months during a rainy season about three years ago.
    I used this, Jasmine08's only obvious blemish, as part of negotiations on her price.

    Once I took possession of her we immediately explored that area which, it turned out, was built of two sheets of plywood sandwiched together with epoxy between them.
    It seemed at the time that the rot extended only into the inner sheet of the two.
    We removed this bad wood with the intention of infilling good wood later.

    Juan Davy (the chap helping me with the conversion work) returned to Jasmine08 on Saturday June 19th after a previously scheduled three week absence to go work on another boat project back in Cape Town.
    The next day, Sunday, Jasmine08 endured the first protracted rain (approximately eight hours overnight) since she became mine and despite the portholes being firmly shut Juan soon noticed that water was still pooling on the shelf below them. :-( 

    On the next day, Monday, Juan went about the business of sorting out the issue once and for all.

    More pictures with explanatory captions can be found in this album.

    Taking care of this issue will ultimately have cost about six days of time that would otherwise have furthered the metamorphosis of Jasmine08 from Bermudan cutter to junk Rig sloop.

    But, w
    hen completed, she will be better than new and cancer free.

    Next I shall begin making the new sail for Jasmine08 back at the ranch while Juan continues with certain interior modifications and the fabrication of 'eyebrows' to go above all the portlights.

    More on these and other fun things in upcoming updates.

    1 file
    Last modified: 13 Jul 2021 06:23 | Anonymous member
  • 12 May 2021 21:03
    Reply # 10474613 on 10420926

    Progress update:

    The Mast Step

    and

    The Partners

    The links will take you through to the relevant albums with explanatory captioned pictures.

    2 files
    Last modified: 13 Jul 2021 06:26 | Anonymous member
  • 04 May 2021 15:23
    Reply # 10440792 on 10420926
    Anonymous member (Administrator)

    David, I always draw my rigs 'naked' (..that's one reason why I now add a bit more drift between yard and mast top...).
    For the user I either suggest the Johanna-sheeting or a double-, that is upper-lower sheeting (better on this big sail). 
    Halyard would be 5-part and then there would be an YHP, a THP and the FUP. In addition, I would suggest a running topping-lift on this yacht, which I would top up before taking the first reef. This will increase the clearance between the reefed bundle and the sea, when running before. 
    Even if the topping lifts are attached only 2/3 or 3/4 aft on the boom, there will be little or no clearance of the yard with only 3 or 4 panels set, so this yard should have a 1-metre light extension to avoid trouble. Fitting a burgee to that extension is very useful: When running before, and by the lee, the burgee, flying at good distance from the sail, shows the real wind direction up there.

    The Chapter 7 of 'The cambered panel junk rig' is hopefully useful when fitting the lines, both standing and running.

    Arne

    Last modified: 04 May 2021 16:15 | Anonymous member (Administrator)
  • 04 May 2021 14:50
    Reply # 10440668 on 10420926

    And the sheeting, Arne? Upper and lower sheets? Looking at Victor's sailplan, even with upper and lower sheets, the sheet to the top batten would probably snag the batten below it. I'd decrease the angle of that top sheeted batten.

    Your sailplan looks trouble-free to me, however the sheeting is done: a good example of foreseeing practical issues (balance in particular), and of not trying to cram on the absolute maximum amount of sail. I like it.

  • 04 May 2021 13:45
    Reply # 10440492 on 10420926

    Thanks Arne. Learning day by day. 

  • 04 May 2021 10:27
    Reply # 10440002 on 10439139
    Anonymous member (Administrator)
    Frederik wrote:

    Good luck with the conversion Hans-Erik. 


    And Arne. Could you say a bit more about the pros & cons between your an Victor’s  sail design?

    in a different thread maybe? 


    First of all, I didn’t know about Victor’s sailplan when I started on mine. My first take on it was very close to Victor’s version, with 70° yard , battens at 5.95m and SA= 63.5sqm.

    However, I worried about weather helm. When a boat reaches 10 tons and has an un-balanced rudder, you’d better hit perfect balance, or you will struggle forever with the tiller (..or end up fitting hydraulic wheel steering...). Choosing a sloop JR instead of yawl, ketch or schooner makes it even more interesting.
    That first sailplan wouldn’t let me shift the sail any further forward. Then, since I had just drawn a sloop JR for a fellow in NZ, I decided to try that one. This sail has been modified to a yard angle of just 65° and that allows one to increase its balance to as much as 21-22% versus only 16-17% with a 70° yard.
    The rig shown below sits in its maximum forward position. Its CE is forward of the Bermuda rig’s CE, and about 50cm forward of the JR that Victor made. Still, this sail can be shifted 30-50cm aft in case of lee helm (unlikely). In other words, I feel that my second rig gives better freedom to fine-adjust the balance to produce a light helm.
    This high-balance sail also brings the CE closer to the mast, so the increase in weather helm when reaching and running will be lower than with a low-balance sail of the same chord.
    Combine the high balance with a 10° rise of the boom, and the boom will be less likely to dig into the sea.

    Arne

    PS: The centre of a real mast, at full thickness, will have to move 10-15cm aft of the thin mast line I have drawn, and so will the sail, of course. Its CE will nevertheless end up well forward of that of the Bermudan rig.

    PPS: Does one live in or on NZ?


    Last modified: 05 May 2021 09:55 | Anonymous member (Administrator)
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