Sail design - balanced lug

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

  1. Robert Miller
    Joined: Dec 2003
    Posts: 95
    Likes: 1, Points: 0, Legacy Rep: 12
    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
    Joined: Oct 2003
    Posts: 43
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Gagetown, N.B., Canada

    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
    Joined: Jun 2001
    Posts: 1,513
    Likes: 67, Points: 58, Legacy Rep: 699
    Location: South Deerfield, MA, USA

    Stephen Ditmore Senior Member

    Phil Bolger & Friends, Inc.
    PO Box 1209
    Gloucester MA 01930 USA
    Fax # 978.282.1349
     
  4. Matthew
    Joined: Apr 2002
    Posts: 40
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: England

    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
    Joined: Dec 2003
    Posts: 95
    Likes: 1, Points: 0, Legacy Rep: 12
    Location: Rhode Island

    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
    Joined: Apr 2002
    Posts: 40
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: England

    Matthew Junior Member

  7. Robert Miller
    Joined: Dec 2003
    Posts: 95
    Likes: 1, Points: 0, Legacy Rep: 12
    Location: Rhode Island

    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
    Joined: Dec 2003
    Posts: 95
    Likes: 1, Points: 0, Legacy Rep: 12
    Location: Rhode Island

    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
    Joined: Oct 2004
    Posts: 18
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Madison, WI

    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
    Joined: Oct 2004
    Posts: 18
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Madison, WI

    robrohdeszudy Junior Member

Loading...
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.