Another write up by Arne Kverneland

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  • 10 Apr 2019 13:21
    Reply # 7275801 on 869421
    Anonymous member (Administrator)

    Nic.

    Age plays a role, of course  -  I rounded 65 less than a couple of weeks ago  -  but there are other factors. Factor one is, of course that I am not a big and strong guy.

    Besides...
    When I had Malena with 32sqm sail(s), in the nineties, the sail went up the conventional way, but I had to work a bit on the last panel. The halyard had 4:1 purchase.

    Johanna’s 48sqm sail (2003 – 2014) was a challenge. I gave her 5:1 purchase on the halyard, and also fitted a self-tailing one-speed winch in such a position that I could stand up and swing it comfortably with both hands. That sail was raised by me hauling up five panels by hand. Then I took a little break while stuffing the tail in its bag, before cranking up the two last panels with that winch. It wasn’t a job I would repeat every half hour, so when the WinchRite electric handle came on the marked, I bought one. The quickest way of raising that sail was to be two on board. I then went to the mast, with the crew mostly just taking in the slack in the cockpit. Hoisting vertically at the mast is a lot more efficient than hauling horizontally  in the cockpit.

    There is one more reason for making use of the halyard hauler: I have now gone away from using the hands-friendly multifilament ropes for halyards and sheets, as they got worn and ragged rather fast. I now use the monofilament (shiny) ropes, which last a lot longer, and which appear to run more easily through the blocks. The downside is that they are rather slippery, compared to the multifilament ropes.

    Sooo... clutching Ingeborg’s 8mm (5:1) halyard with gloved hands, can be done, but why struggle when there are easier ways?

    Arne

    (Btw, Broremann’s 10sqm and Frøken Sørensen’s 20sqm sails were so light that halyard forces were never an issue)


    Last modified: 02 Jun 2019 09:36 | Anonymous member (Administrator)
  • 10 Apr 2019 08:32
    Reply # 7275563 on 869421

    Wonderful!

    I thoroughly enjoy seeing the various techniques used to supplement grip strength. Loss of grip strength is a reality we will all have to eventually deal with as we get older.

    Not that your device really falls into that category nor your age but still, I find it interesting.

    Thank you,

    Nic

  • 09 Apr 2019 10:52
    Reply # 7273006 on 869421
    Anonymous member (Administrator)

    Quicker than a winch, stronger than hands-only.

    That trip was the first test of my Mk III halyard hauler. The Mk I from last spring was good for a while, but the shaft at the pawl soon became rickety. The Mk II was made stouter. However, I still found it to be a challenge to get the pawls just right: Too flat angle and the line would slip, too steep angle and it would jam. In the end, I made it work well, but I would not dare to recommend it. This Mk III version, with a real camcleat on it, appears to be the one I will recommend. I will use it a bit more first (with and without the bungee in front), and then produce a little write-up about it (sigh...). This model fits within a sheet of paper, so the drawing can simply be printed out and be used as a pattern.

    My manual hoisting of Ingeborg’s 35sqm/40kg sail goes about like this:

    ·         The first three panels goes up quickly, hauling hand over hand, while standing up.

    ·         The next panel may be hauled up conventionally, still standing up.

    ·         The three last panels goes up, using the halyard hauler. The halyard has then been wound one round around the sb. genoa winch and I sit on the opposite bench and ‘row’ the sail up with the hauler.

    Edit 20190722: I find it easier now to just pass the halyard 'around the corner' of the winch, not needing to take a turn around it. My 5-part halyard is easy to hold with one hand while pushing the hauler back between each pull.

     (...thanks to the parachute drogue, I don't need to hurry…)

    I find the hauler to be on its best when the forces needed are just a bit higher than my hands will like, but still not so high that I need to use a winch.

    In short, the hauler is quicker than the winch and stronger than my hands.

    Arne


    Last modified: 22 Jul 2019 10:11 | Anonymous member (Administrator)
  • 08 Apr 2019 21:13
    Reply # 7272238 on 869421

    Dearest Arne, what a delightful piece. That is exactly what sailing a junk should be about.  Doing your own thing, in your own time in your own way.  It made me itch to be out there on the water.  I love winter sailing myself - not great long trips where you become chilled through and through, but a nice few hours when you are just cold enough really to appreciate lighting the heater when you get back.  And that hot drink.

    Your halyard hauler - another brilliant Arne idea - works, really, on the same intellectual principle as my chain pawl: a very simple way of taking the load so that all you have to do is pull.  With a chain pawl, you never have the weight of anchor and chain - you simply pull the boat through the water: your halyard hauler stops you from having to take the weight of the sail.  I am lucky enough to have managed to buy a second-hand, self-tailing winch - one turn around it and the winch holds the weight and a quick turn around the ST part will hold the sail sufficiently securely that one can leave it for a moment (to go and fetch that anchor, for example!).  But for those who don't have, and can't/won't afford an ST winch, it's a wonderful alternative.  BTW, I couldn't find the details of how to make it in your files.  Could you remind me where it is, please?

    I hope you have many, many more pleasant sails this season.

    PS - and you're NOT old, merely mature!

  • 08 Apr 2019 20:30
    Reply # 7272138 on 869421

    That was a very nice piece Arne. It was more than technical information - a nice balance of text and photos, it captured the joy of it too. Well done, I look forward to your next write-up.

  • 08 Apr 2019 13:28
    Reply # 7271399 on 869421

    She looks lovely, and I bet a very sweet boat to sail.

     Love the halyard hauler, any chance of a photo in action?

  • 06 Apr 2019 17:09
    Reply # 7263200 on 869421
    Anonymous member (Administrator)


    First sail in Ingeborg, 2019

    Yesterday I made use of the suddenly human temperatures in Stavanger, and took my Ingeborg out for a little spin. Here is a little, mostly technical photo review of it.

    No fancy drone video show, I am afraid...

    Arne

    Last modified: 06 Apr 2019 17:09 | Anonymous member (Administrator)
  • 22 Feb 2019 15:44
    Reply # 7178750 on 7178536
    Arne wrote:Since fitting a string of Sikaflex or similar would be much simpler, I would rather recommend that method, today. The two bolts at each end of the yard takes the main shear loads, and the two tubes are firmly held together by the lashing of the halyard blocks and by that stitched-on PVC mast-padding, so the choice of glue is hardly critical, me thinks.

    Arne

    Agreed, the fillets between the two tubes are more to stabilise them and prevent fretting due to sideways movement than for structural strength. So the more flexible, sealant-type adhesives seem to be the better bet here.
  • 22 Feb 2019 13:39
    Reply # 7178536 on 869421
    Anonymous member (Administrator)

    Thanks, David,
    I made that typo while correcting another one...

    About Ingeborg’s mast (150mm x 5mm 6082-T6):
    It appears to be plenty, both strong and stiff enough. I can hardly notice any bending of the mast, neither from the cockpit, nor on photos. I would be tempted to use this dimension even on a boat approaching 3 ton displacement *): The fine thing with an unstayed mast is that it shows the load. In case it shows signs of bending much, close to deck, all one has to do is to unstep the mast and insert a three-meter long inner tube. This does not have to be a close fit. Just grab the best one can get, and then shim out the inner tube with 3-4 ‘waistbelts’ of glass tape, set in epoxy. One even doesn’t have to glue that inner tube in place. Just fix it with a couple of screws next to the mast step to keep things together while stepping or unstepping the mast. That simple measure could easily beef up the mast strength with 50%.

    Another thing with Ingeborg’s mast:
    It doesn’t tremble. Malena’s, and in particular Johanna’s mast (both wooden) could tremble in a breeze. It was not during sailing, but in harbour, with the sail down and with me down below. The frequency seemed to be in resonance with my nerves, somehow, and kind of scared me, no matter how safe and secure the boat was. Needless to say, I tried avoid this by altering the tension in the halyard and lazyjacks, but in the end it appeared that the frequency had to do with the mast alone.
    On Ingeborg, the mast can also oscillate in strong winds, but the natural frequency is much lower, so doesn’t feel annoying at all. My guess is that the softer material and smaller diameter of the lower mast plays in here. Bad vibes verus good vibes...

    Epoxy:
    I used West Epoxy. This has been used on three boats, Edmond Dantes, Frøken Sørensen, and now on Ingeborg. The epoxy joint on Frøken Sørensen’s yard was thoroughly painted (2013) and looked good last time I saw her. On Edmond, that epoxy string was never painted, so bits of it started coming down after just a couple of years. Since fitting a string of Sikaflex or similar would be much simpler, I would rather recommend that method, today. The two bolts at each end of the yard takes the main shear loads, and the two tubes are firmly held together by the lashing of the halyard blocks and by that stitched-on PVC mast-padding, so the choice of glue is hardly critical, me thinks.

    Arne

    *) No I would not! I would rather downsize than upsize if were dumb enough to sell Ingeborg.


    Last modified: 22 Feb 2019 15:04 | Anonymous member (Administrator)
  • 22 Feb 2019 09:13
    Reply # 7178272 on 869421

    A little typo on p4 that you might want to correct, Arne:

    "3.5mmx 2mm for the lower battens. "

    How stiff has the mast turned out to be? I ask because the size of tube is the same as that which we got for Annie's Fanshi - a boat of fairly similar size. 

    "It could be that a softer glue is better suited for the job than epoxy: Maybe Sikaflex or similar would be better and less vulnerable to UV-radiation."

    What brand of epoxy do you use for these aluminium bonding jobs? There is a case for using toughened epoxy here, but I would always go for Sikaflex or similar, as you suggest.

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