Sail design - balanced lug

Discussion in 'Sailboats' started by Robert Miller, Apr 10, 2004.

  1. Robert Miller
    Joined: Dec 2003
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    Location: Rhode Island

    Robert Miller Junior Member

    Can anyone recommend a book or other source material on designing a balanced lug rig?

    Some questions I've been pondering:
    Need to calculate force on luff (luff tension being primary support for aft
    (peak) of yard. Luff tape? Luff rope?
    How much "curve" in loose foot to allow just proper overlap of boom at
    mid-point?
    Location of deepest draft?
    Rake of mast?
    Placement of seams parallel to leach vs parallel to boom?

    I do have some books which discuss rig design, but cannot find specifics on what should be basic design issues for balanced lug sail. There seems to be a "that looks about right" attitude that doesn't seem quite satisfying.

    Appreciate any help.
    Robert
     
  2. tonyr
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    tonyr Junior Member

    If you have not come across it yet, Todd Bradshaw's "Canoe Rig" is valuable. When you have read it, if you post questions on specifics to him on the appropriate Woodenboat.com forum thread (probably designs), he usually answers most helpfully.

    Tony (another lugger).
     
  3. Stephen Ditmore
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    Stephen Ditmore Senior Member

    Phil Bolger & Friends, Inc.
    PO Box 1209
    Gloucester MA 01930 USA
    Fax # 978.282.1349
     
  4. Matthew
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    Matthew Junior Member

    Get 100 Small Boat Rigs, by Phil Bolger.
    I think it might be 103 or something now, as he's thought of a few more!
    But its an excellent read, and you know he has tried every rig and so speaks from experience.
     
  5. Robert Miller
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    Robert Miller Junior Member

    "Get 100 Small Boat Rigs, by Phil Bolger.
    I think it might be 103 or something now, as he's thought of a few more!
    But its an excellent read, and you know he has tried every rig and so speaks from experience."

    I just searched on Amazon for this book. Several Bolger books did come up, but not that one. Could the title be somewhat different?
    I would like to find it.
    Thanks.
    Robert
     
  6. Matthew
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    Matthew Junior Member

  7. Robert Miller
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    Robert Miller Junior Member

    Matt:

    WoodenBoat Store did indeed have the book...
    and I've ordered a copy.

    Thank you very much for the help!

    Best,
    Robert
     
  8. Robert Miller
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    Robert Miller Junior Member

    Wanted to bring this topic around...
    Thanks for all the recommendations..all.

    Canoe Rig by Todd Bradshaw contains just about all I needed to. Also, it's a really beautiful book. The illustrations have to be the clearest and nicest of any book I have seen on rigs.
    I recommend this book very highly (and thanks to the person who recommended it to me).

    Robert
     
  9. robrohdeszudy
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    robrohdeszudy Junior Member

    balanced lug motherlode

    http://homepages.apci.net/~michalak/

    Here's the alphabetical index. Search under "Lugsails" and "Sails". It's about polytarp construction, but the shaping applies equally to Darcon.
     

  10. robrohdeszudy
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    Location: Madison, WI

    robrohdeszudy Junior Member

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