converting my silhouette mk3 to a junk rig

  • 12 Dec 2011 19:07
    Reply # 771857 on 770665
    A dimensioned drawing of the 209 sq ft sail is now in "David's Doodles". It could be made in a straightforward, flat style, or it could have up to 6% camber in its lower panels, as on Fantail.
  • 12 Dec 2011 13:12
    Reply # 771640 on 770665
    Jeff, lest you missed it, take a look at my recent posting here which contains Blondie Hasler's info on rigging and sailing a Kingfisher 20. The text therefore assumes a 20 footer rather than a 17 footer but the info will be useful. I would echo previous comments about getting hold of Practical Junk Rig - essential. Cheers.
    Last modified: 12 Dec 2011 13:13 | Anonymous member
  • 11 Dec 2011 12:37
    Reply # 770951 on 770830
    Deleted user
    David Tyler wrote:Jeff,
    I scaled down the Raven 26/Fantail sail to 209 sq ft/19.42 sq m, and got a batten length of 4 metres, a yard length of 3.1 metres, a boom length of 3.8 metres, a mast height above deck of 5.8 metres, and a distance between the mast centreline at the deck (the mast is raked forward 6 degrees) and the bow in the range 1.2 - 1.4 metres, depending on the Centre of Lateral Area of the Silhouette (which I don't know).
    David.


    David,

    Thanks for the information, I am good at making thinks, but not at working things like this out.

    Regards   Jeff.

  • 11 Dec 2011 04:36
    Reply # 770830 on 770665
    Jeff,
    I scaled down the Raven 26/Fantail sail to 209 sq ft/19.42 sq m, and got a batten length of 4 metres, a yard length of 3.1 metres, a boom length of 3.8 metres, a mast height above deck of 5.8 metres, and a distance between the mast centreline at the deck (the mast is raked forward 6 degrees) and the bow in the range 1.2 - 1.4 metres, depending on the Centre of Lateral Area of the Silhouette (which I don't know).
    David.
  • 10 Dec 2011 22:34
    Reply # 770695 on 770690
    Deleted user
    David Tyler wrote:
    Jeff Neale wrote:

    HI, Help. I am trying to work out  how to junk rig my  boat, & getting lost in all the jargon.

    She is 17ft long,

     Where do i fit the new mast ?.

    How much sail area ?.

    What sail plan.

    I need it to be very easy to use.

    Thanks  Jeff.

     

     

     

    Hi Jeff,
    You'll need at least to borrow a copy of Practical Junk Rig, the book that we all keep referring to. It contains every last thing that you need to know to design, build and sail a junk rig. That will tell you about the factors concerned in positioning the mast.
    I see the the Silhouette mk3 has a sail area of 209 sq ft in her main + genoa, and that would be a good starting point.
    Having sailed Fantail several times now, I'm very pleased with the way this design has worked out, with the forward raked mast and fanned sail. I would favour it for all boats up to about 28 ft. Photos in the photo gallery, and a sail drawing in "Your online file storage/Drawings/David's doodles". It can be scaled down to 209 sq ft very easily, if you like it.


    HI  David,  I will look into that now.

    Many thanks  Jeff.

     

  • 10 Dec 2011 22:25
    Reply # 770690 on 770665
    Jeff Neale wrote:

    HI, Help. I am trying to work out  how to junk rig my  boat, & getting lost in all the jargon.

    She is 17ft long,

     Where do i fit the new mast ?.

    How much sail area ?.

    What sail plan.

    I need it to be very easy to use.

    Thanks  Jeff.

     

     

     

    Hi Jeff,
    You'll need at least to borrow a copy of Practical Junk Rig, the book that we all keep referring to. It contains every last thing that you need to know to design, build and sail a junk rig. That will tell you about the factors concerned in positioning the mast.
    I see the the Silhouette mk3 has a sail area of 209 sq ft in her main + genoa, and that would be a good starting point.
    Having sailed Fantail several times now, I'm very pleased with the way this design has worked out, with the forward raked mast and fanned sail. I would favour it for all boats up to about 28 ft. Photos in the photo gallery, and a sail drawing in "Your online file storage/Drawings/David's doodles Raven 26", and also in Annie's conversion. It can be scaled down to 209 sq ft very easily, if you like it. The next magazine e-supplement, due to be published very soon, will contain an article by Annie on how she made the conversion.
    Last modified: 10 Dec 2011 22:31 | Anonymous member
  • 10 Dec 2011 21:45
    Message # 770665
    Deleted user

    HI, Help. I am trying to work out  how to junk rig my  boat, & getting lost in all the jargon.

    She is 17ft long,

     Where do i fit the new mast ?.

    How much sail area ?.

    What sail plan.

    I need it to be very easy to use.

    Thanks  Jeff.

     

     

     

       " ...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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