CARAVELINA - New JR scow minicruiser

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  • 01 May 2022 15:22
    Reply # 12762387 on 7917477

    A wonderful looking craft for sure. I look forward to seeing her in the water and your comments on how she is in use.

  • 26 Apr 2022 01:09
    Reply # 12748298 on 7917477
    Anonymous member (Administrator)

    She looks beautifully built, and a gold mine of innovative ideas.

    And I just love that look of pride and satisfaction in the second photo!

    Look forward to the trials.

    One thing puzzled me - I too am looking at twin rudders with lifting blades, but resiled from end plates on the blades. it strikes me that with twin rudders end plates may not be necessary, but the main issue for me was - does this mean the rudders have only two positions: fully up and fully down?

    Good luck for launching day and future adventures.


    PS I meant to add: I think you have done well with the tabernacle, just looking at those photographs from a previous post.


    You have avoided any fastenings through the mast at that sensitive point - and avoided that horror of horrors, a pin through the mast. Your arrangement might look a litle frail, but it is not. You have realised that the hinge arrangement is used only for those few seconds when the mast is being raised or lowered, the rest of the time it is out of the picture, structurally. If an aluminium mast is to rotate on that axis (the top of the tabernmacle) something like that is the way to do it. The hinge pin should be mounted on the tabernacle, as you have done it, not on or through the mast.

    There is a possibility too, that the pin could extend each side of the tabernacle (a bit like a bollard) and the clamp could be just a temporary square lashing. I haven't seen it done, but can't see why not.

    I hope you will post more photos which will stimulate more comments from other readers.

    Last modified: 26 Apr 2022 11:00 | Anonymous member (Administrator)
  • 24 Apr 2022 19:45
    Reply # 12740269 on 7917477

    One more week and she will kiss the water. A nearby lake, for tests and trials.  Once ready will be moved to the sea. Just to remind - 2 x 15sqm schooner, hinged aluminum battens. 650 x 250cm, 1,5tons. This is my first ever junk rigged boat, so emotions are overhelming...

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  • 09 Oct 2021 08:54
    Reply # 11222693 on 11204062
    Anonymous wrote:

    Hi Kris,

    Your new boat looks great!

    I like the 'external' blocks of wood that you used to mount the threaded rods to the tabernacle. I had considered doing something similar. Was this part of the plans, or was this your personal touch?

    Scott.

    Scott, original plans are much simpler regarding masts. Wooden box-section wooden glued masts inserted from the top to the type of gully.  Since I want this boat to be an easy trailer-sailer  I decided on aluminum lamp posts and tabernacles. I planned based on what I could find in this JRA site adding some ideas of my own. In 90% I based on Annie Hill description and Oryx's tabernacles. I bought the idea of an external "hinge". The construction of mine is tricky, but it WORKS! The axe rod is only M8mm, as it works only when collapsing the mast. In the tabernacle there are pieces of adequate size pipe epoxied in. Other, holding, rods are M10.
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  • 08 Oct 2021 19:51
    Reply # 11204062 on 7917477

    Hi Kris,

    Your new boat looks great!

    I like the 'external' blocks of wood that you used to mount the threaded rods to the tabernacle. I had considered doing something similar. Was this part of the plans, or was this your personal touch?

    Scott.

  • 07 Oct 2021 21:13
    Reply # 11149131 on 11146509
    Kris wrote:

    My ANNA LUCJA 2 ( CARABELA 650) is finally out of the shop and tabernacles are stepped. I would love to try her sailing before winter. 

    Congratulations on getting the boat completed to this stage. We look forward to seeing photos of the boat in the water, and hearing how your new rig works out. But the hard work is done and this is the fun part.
  • 07 Oct 2021 06:29
    Reply # 11146509 on 7917477

    My ANNA LUCJA 2 ( CARABELA 650) is finally out of the shop and tabernacles are stepped. I would love to try her sailing before winter. 

    4 files
  • 10 Feb 2021 10:36
    Reply # 10076034 on 7917477

    I can't think of a reason to make the two sails with different camber, but I can think of practical reasons to keep them the same.

    The after sail needs to be sheeted in more, but I don't think that has any connection with the amount of camber. 

  • 08 Feb 2021 22:57
    Reply # 10070418 on 7917477

    The Split Wind Vane is almost finished. Now, about the sails, I am sewing. Two almost the same 15 sm, AR 2,5, hinged battens sails to make my Anna Lucja 2 the junk schooner. 

    Question is: for such a schooner both sails should have same camber, or one should be flatter? If so - which one, foresail or the main?

  • 19 Jan 2021 15:44
    Reply # 9877566 on 7917477

    The constraints are:

    1. The vane linkage cords must first run down to the first turning point on the axis of vertical rotation of the vane turret, so that they describe a conical shape as the turret rotates, thus not changing in length.
    2. They must run more or less athwartships from the second turning points to the little "tiller" on the servo carrier.

    In between the two turning points, there is freedom. On Tystie, there is an extra turning point as the cords come down from the vane (mounted on the pushpit) to the first turning blocks in the centre of the davits crossbeam, then at an angle to second turning blocks at the top of the transom, then down the transom to the third turning blocks on the transom, then athwartships to the servo.

    The red cords can just be made out in this photo [taken as we were perched on top of an uncharted rock in a remote lagoon in BC, Canada!].

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