Junk Rig for Finch

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  • 24 Dec 2017 16:30
    Reply # 5647513 on 5631596

    The burgundy weave is literally a combination of black and red yarns in the warp and weft.  The color changes dramatically depending on the angle you look at it and can be almost black to a deep red.  

    e

  • 24 Dec 2017 15:29
    Reply # 5647500 on 5631596
    Anonymous member (Administrator)

    My (half-built) new sail is cut from Top Notch 9 - seems very tough, and nice to work with. It is solution-dyed, so should not fade, and is the same both sides.

    I believe Dave Zeiger used the 11oz version for his last sail and he's very satisfied with it.

    Chris

  • 24 Dec 2017 00:45
    Reply # 5647291 on 5631596
    Deleted user

    Thanks Annie.  You cant beat that.  I was also looking at Top Notch 9.  Has anyone had any experience with that? It has a color they call Burg Weave that looks pretty cool.  Otherwise it will probably be Weathermax Burgandy.  

  • 24 Dec 2017 00:40
    Reply # 5647289 on 5631596

    Hi Doug.  Sebastian is a professional sailmaker and tells me that Weathermax 80 is presently his cloth of choice.  So I guess that's an endorsement.

    Last modified: 24 Dec 2017 00:41 | Anonymous member
  • 23 Dec 2017 22:38
    Reply # 5647216 on 5631596
    Deleted user

    I have researched the different possibilities for material to build the sail, and of the usual suspects that I have found available, the Weathermax 80 is the lightest at 8 oz/yd and is also the most cost effective fabric I found.  I was looking mostly in rochfordsupply.com.

    Does anyone have any insight as to preferable candidates?  I have read that the owner of Peregrine has used this fabric successfully so it feels like a potentially good choice.  Any input would be welcome. 

     

  • 20 Dec 2017 01:42
    Reply # 5643223 on 5631596
    Deleted user

    Thanks for investing your time into my project. You guys are awesome. I will print these out over the weekend and take a closer look. I am still leaning towards the weaver bird sail plan although they both look killer. Sewing a sail during these cold wet months sounds like good duty. Again. Thank you.

    Arne, I did spend 6 years cruising finch before her rebuild began. As I mentioned she was a MKI, so not a cutter. She had enough weather helm that I realized why they decided to add a sprit and turn her into a cutter. I understand that experiment had its issues too.  But I would guess it eased the weather helm, but to what degree I have no first hand experience. 

    At some point I will post some pics of finch so you can see where I am in the rebuild. Still a year plus out from completion but enjoying the process!

  • 19 Dec 2017 12:26
    Reply # 5642328 on 5631596
    Anonymous member (Administrator)

    My AR2.10 sail may look to have a little short halyard drift, but I am not too afraid of that. Besides, unless the mast is planned to sit in a tabernacle, the boom and the whole sail may well be moved down 10-20cm, and still have plenty of clearance to the doghouse.

    In case a tabernacle is to be used, I can always try an AR2.05 sail from my stack of master sails. That would come out at 34.1sqm (367sqft)

    Arne

    Last modified: 19 Dec 2017 12:36 | Anonymous member (Administrator)
  • 19 Dec 2017 11:49
    Reply # 5642265 on 5631596

    Thanks for the Pacific Seacraft 25 QCAD file, Arne. I've added my sail at 350 sq ft and AR 1.8 to it, and here are two views, the first with your original sketch, Doug, plus two of Arne's sails and one of mine; and the second, to be clearer, with just your original sketch and my drawing.

    I think that Arne's 377 sq ft, AR 2.1 sail is too big for the mast length available, but either of the two 350 sq ft sails will work.

  • 19 Dec 2017 08:34
    Reply # 5642108 on 5631596
    Anonymous member (Administrator)

    Doug.
    Have you had the chance to sail your boat or a sister boat with the original rig, sloop or cutter? That may help to take out some of the guesswork with respect to getting the Lead right.

    The CAD program I use cannot find the centre of an area, so both the (geometrical) CE and CLR was found by cutting out the areas and balancing them on a ruler, as shown here, on page 1.

    Arne

  • 19 Dec 2017 02:29
    Reply # 5641987 on 5631596
    Deleted user

    Thanks to all for throwing in your two cents.  I really appreciate it and feel lucky to have everyone in this association as a resource!!!

    Arne, that mast was plumb in my head when I conceived it. My pencil must have been crooked. Thanks for straightening it back out. I have drawn several versions of your sails but it's really cool to see them sorted by your own hand. They all look really cool.  And I would certainly trust your expertise on the CLR and CE over mine.  

    David, I tried to follow your proportions and philosophy as best I could but it felt like the center of effort was too far forward so I simply stretched the boom battens and yard until it was about right.  Then I posted it knowing you guys would immediately see the holes in my game. I think weaver birds sail is beautiful, but I also like the way you have mixed camber with hinges so each is less extreme.  It feels right but also complex for my first conversion. 

    David sorry about my sloppy sketch. I am basically working out of a cave and can understand it may be hard to read. 

    And Annie Hill. You don't know it but your responsible for me being in this position. More on that later but thanks for writing that little book. 

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