SibLim update

  • 23 Feb 2017 13:19
    Reply # 4628332 on 4315719

    Thanks for posting this, Arne. I have a copy of that book, stored in a safe place somewhere. I've been looking for it to find just that picture.

    A handsome little boat. One of the first western designed junks I ever laid eyes on.

  • 23 Feb 2017 07:19
    Reply # 4627989 on 4315719
    Deleted user

    Thanks Arne, I still have to learn how to post pics here.

    Annie, I was wandering the same thing. I don't know if it just a quick drawing by Chapelle to illustrate his writting or something that was really for build. If someone is registered to Woodenboat forum, they might ask there ?


    Antoine

    WaterBear

  • 22 Feb 2017 19:54
    Reply # 4626583 on 4315719
    What a sweet little boat!  Well spotted, it's the first I've heard of a junk rig in Howard Chappelle.  They get everywhere!  I wonder if anyone every built one.
  • 22 Feb 2017 19:26
    Reply # 4626517 on 4315719
    Anonymous member (Administrator)

    I guess Antoine means this  design

    Arne

  • 22 Feb 2017 16:12
    Reply # 4624834 on 4315719
    Deleted user

    Annie

    I was reading Howard Chapelle Design book and my eye got caught by this small drawing which reming me a little ship under construction in some south pacific island ...


    http://www.junkrigassociation.org/Sys/Profile/PhotoGallery/62678915/0/62679571?memberId=11235629&dh=0&cppr=0


    Antoine

    WaterBear

  • 20 Feb 2017 10:59
    Reply # 4618812 on 4618321
    Anonymous member (Administrator)
    Paul Thompson wrote:
      Arne, the angle of the yard is directly related to sail balance. The more balance you have, the lower the yard angle must be and vice versa. If you don't follow this rule, you will have problems getting the sail to set well. I learnt this the hard way with Aphrodite.

    Paul, yes, I agree with you on that. Maybe I one day start designing another set of master sails, this time with a yard angle low enough to work with anything between 15 and 25% balance. I have found the range of Johanna style master sails (70deg yard) to speed up the process of sail design so much that I don't like to start from scratch any more.

    Arne

    PS: To make a Johanna-style sail with 70deg yard set well with maximum balance (15-18%), I recommend fitting a tall enough mast to let one attach the halyard as much as 5 - 7% aft of the middle, and still with a decent drift.


    Last modified: 20 Feb 2017 11:01 | Anonymous member (Administrator)
  • 20 Feb 2017 00:56
    Reply # 4618321 on 4569435
    Arne Kverneland wrote:

    When I discovered that SibLim's new rig had about the same sail area as Ingeborg, I found it irresistible to try Ingeborg’s sailplan on her. The diagram demonstrates that the 70° yard of Ingeborg’s sail does not go so well with the high balance needed here. I guess one can get away with 15-18% balance, but not 23%, as here.


    Arne, the angle of the yard is directly related to sail balance. The more balance you have, the lower the yard angle must be and vice versa. If you don't follow this rule, you will have problems getting the sail to set well. I learnt this the hard way with Aphrodite.
  • 19 Feb 2017 20:53
    Reply # 4618157 on 4617408
    David Tyler wrote:


    Remember that the tabernacle is going to fit tight against the starboard face of the backbone and the forward face of the floor at stn 2. Some of these bearers will have to be cut away.


    Of course, but it's easier to trim them away after the event than to try and assess now, exactly what the dimensions and fit of the tabernacle are going to be.  In the meantime, I can have a nice solid piece of plywood to stand on while I fit the bunk.
  • 19 Feb 2017 08:11
    Reply # 4617408 on 4315719


    Remember that the tabernacle is going to fit tight against the starboard face of the backbone and the forward face of the floor at stn 2. Some of these bearers will have to be cut away.

  • 19 Feb 2017 07:44
    Reply # 4617388 on 4315719


    14 Feb All done and dusted. Nice, eh?

    Whatever turns you on, baby.


       " ...there is nothing - absolutely nothing - half so much worth doing as simply messing about in junk-rigged boats" 
                                                               - the Chinese Water Rat

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