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modifying a Sangria to junkrig

  • 27 Jul 2025 08:12
    Quote
    Reply # 13525174 on 13525005
    Anonymous member
    Anonymous wrote:

    Paul has a point.
    However, we don’t know how and where Jacques’ boat is meant to be sailed yet.
    If some offshore sailing is on the program, I would hesitate with rigging with a too tall mast.

    The shown sailplan, below, has 32sqm sail area, and with the mast height approaching the height of the Bermuda rig’s mast. This should give a SA/disp. of around 22.3, so she cannot be called under-rigged.

    Arne

    (Full size diagram on Arne's sketches, section 8)

    Arne et Paul,

    My sailing area: southern Brittany and mainly the Gulf of Morbihan. No offshore sailing, but tides and strong currents, particularly in the Gulf of Morbihan (mooring buoy  Nevezadenn - Name of my Sangria).

    Nevezadenn is equipped with a 6 hp outboard motor, and my goal is to sail as much as possible.

    No regattas.

    I sail alone and in both summer and winter

    When sailing, I seek simplicity and ease.

    My goal is to observe the sea—fauna and flora—and to make observations for the citizen science association of which I am the president.

    All this to say that the junk rig should allow me to meet these needs. I don't have any specific knowledge of junk rig - I seek advice from you-, but Arne's proposed version 1 seems to meet my needs, especially since the aluminum lamppost that will serve as the mast is 10 m long, and after a few adjustments, it's likely to be 9.80 m long.

    What do you think ?

    Good Sunday

    Jacques
  • 26 Jul 2025 11:27
    Quote
    Reply # 13525005 on 13487971
    Anonymous member (Administrator)

    Paul has a point.
    However, we don’t know how and where Jacques’ boat is meant to be sailed yet.
    If some offshore sailing is on the program, I would hesitate with rigging with a too tall mast.

    The shown sailplan, below, has 32sqm sail area, and with the mast height approaching the height of the Bermuda rig’s mast. This should give a SA/disp. of around 22.3, so she cannot be called under-rigged.

    Arne

    (Full size diagram on Arne's sketches, section 8)
  • 25 Jul 2025 19:35
    Quote
    Reply # 13524834 on 13487971
    Anonymous member

    Hi Jacques,

    I might be a bit late to the party, but: From what I learned with the junk rig on Ilvy, you can't carry too much canvas - because reefing is so ridicoulusly easy and fast! 

     You and me, we sail about the same boat, a Sangria 25 and a Maxi 77, with pretty similar characteristics, and aSA/Disp ratio bermudan rigged. Right now Ilvy carries 35 sqm, but if I would rig her again, I would go for 40 sqm. 

    Seeing you sailplan at only 30 sqm, I feel urged to share my experiences with you and maybe make you rethink. 30 sqm basically is Ilvy with one reef, and sailing upwind undercanvased in lighter winds is no fun, really. 

    It is not that much more work to sew 35 instead of 30 sqm, but the difference out at sea will be huge!

    Best, Paul

    Last modified: 25 Jul 2025 21:26 | Anonymous member
  • 25 Jul 2025 17:55
    Quote
    Reply # 13524804 on 13524358
    Anonymous member
    Anonymous wrote:

    Here, to get you started are Sheet 1 and 2 of the sailplan. If you read Chapter 4 of TCPJR, you will find how to draw Sheet 3 and 4 to let jy make camber in the sail, and let you decide the position of the batten pockets.
    Good luck.
    Arne

    (Full size diagrams on Arne's sketches, Section 8)

    Thank you so much

    I keep you informed 

    Jacques 
  • 24 Jul 2025 15:13
    Quote
    Reply # 13524358 on 13487971
    Anonymous member (Administrator)

    Here, to get you started are Sheet 1 and 2 of the sailplan. If you read Chapter 4 of TCPJR, you will find how to draw Sheet 3 and 4 to let you make camber in the sail, and let you decide the position of the batten pockets.
    Good luck.
    Arne

    (Full size diagrams on Arne's sketches, Section 8)

    Last modified: 25 Jul 2025 21:31 | Anonymous member (Administrator)
  • 24 Jul 2025 10:04
    Quote
    Reply # 13524282 on 13524280
    Anonymous member
    Anonymous wrote:
    Anonymous wrote:

    Arne,

    What do you think about draft 2 ( enclosed) ?

    With my wife, we are going to sew the sail  ( with your practical guide: chapter 5 ).

    Have a good day

    Jacques 

    Jacques
    I don't understand this.
    The drawing appears to be the one I drew up for you, but the dimensions you have shown are much different (smaller).

    How come?

    Arne

    Yes, it's your drawing.

    For dimensions , I wasn't sure . 

    What do you advice me ? 


    Jacques 
  • 24 Jul 2025 09:31
    Quote
    Reply # 13524280 on 13524269
    Anonymous member (Administrator)
    Anonymous wrote:

    Arne,

    What do you think about draft 2 ( enclosed) ?

    With my wife, we are going to sew the sail  ( with your practical guide: chapter 5 ).

    Have a good day

    Jacques 

    Jacques
    I don't understand this.
    The drawing appears to be the one I drew up for you, but the dimensions you have shown are much different (smaller).

    How come?

    Arne
  • 24 Jul 2025 08:16
    Quote
    Reply # 13524270 on 13519860
    Anonymous member
    Anonymous wrote:Bonsoir Jacques,

    What do you advice me for sail fabric ? 

    It depends on what kind of sailing you are going to do. As a standard sail fabric I would recommend "Swela Outgard 393", which is a 190 g/m² polyester fabric that looks good on both sides. I use it, and it is pretty tough. Havn't tried (yet), but I would estimate this fabric could easily carry you above the pond and back again. If, however, you plan to sail for extended times in stormy conditions, only then I would opt for something heavier - at least in the upper panels.

    Could you please sent me your sailplan ? I am working on my sailplan.

    My current sailplan on Ilvy is the same as on Boudicca of Ketil Greve, it is a Johanna 60 design from Arne. You can find it in his very comprehensive TCPJR texts.


    Cheers,

    Paul


    Many thanks for advice

    Jacques 
  • 24 Jul 2025 08:10
    Quote
    Reply # 13524269 on 13487971
    Anonymous member

    Arne,

    What do you think about draft 2 ( enclosed) ?

    With my wife, we are going to sew the sail  ( with your practical guide: chapter 5 ).

    Have a good day

    Jacques 

    1 file
  • 11 Jul 2025 18:21
    Quote
    Reply # 13519860 on 13519831
    Anonymous member
    Bonsoir Jacques,

    What do you advice me for sail fabric ? 

    It depends on what kind of sailing you are going to do. As a standard sail fabric I would recommend "Swela Outgard 393", which is a 190 g/m² polyester fabric that looks good on both sides. I use it, and it is pretty tough. Havn't tried (yet), but I would estimate this fabric could easily carry you above the pond and back again. If, however, you plan to sail for extended times in stormy conditions, only then I would opt for something heavier - at least in the upper panels.

    Could you please sent me your sailplan ? I am working on my sailplan.

    My current sailplan on Ilvy is the same as on Boudicca of Ketil Greve, it is a Johanna 60 design from Arne. You can find it in his very comprehensive TCPJR texts.


    Cheers,

    Paul