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Thread: Sailing rig recommendation for this small boat?

  1. #36
    Join Date
    Nov 2001
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    Seattle
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    20,782

    Default Re: Sailing rig recommendation for this small boat?

    Here's a list of the wights of various woods, in case you happen on some better spar making wood.

    http://www.engineeringtoolbox.com/wo...sity-d_40.html

    When you are planing the spars, keep in mind that the mast needs to be stiffer than a comparable mast for a rig that attaches the sail to the mast.

  2. #37
    Join Date
    Nov 2016
    Location
    honolulu,hawaii,usa
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    44

    Smile Re: Sailing rig recommendation for this small boat?

    Quote Originally Posted by Laukejas View Post



    Sail area is 76 square feet, all spars are 118" long (I can re-use my current mast by shortening it), lead is 3%. I can up the sail area and move CE forward a bit if I use a 2-piece sprit pole. Center of mass is very low. Sprit sails are also said to be very weatherly, more so with the jib. The obvious downside is lack of simplicity. Handling two sails in a boat this small singlehanded might be a little over my capability, especially when launching and landing in foul weather.. Also, since the jib is boomless, it might create more weather helm than the mainsail, so maybe my 3% lead isn't enough...
    To move CE forward with max sail area, how about hanging a jib off a bowsprit. It could be self-tacking with a boom-batten.

    Quote Originally Posted by Ian McColgin View Post
    A clubbed jib, whether run as a forestaysail with the jib out on a bowsprit or run as a solo jib, is of fantastic advantage for short-handed sailing. Besides the obvious advantage of being self-tacking and given the low stress usually self gybing, it also makes dousing the jib a jiffy snap if you have a downhaul leading back to the port side of the mast. You can get the jib down and secure on either rail or down the center and held there without a lot of intefereance with anchoring, picking up a mooring, or docking under sail all without bothering to furl and put on sail stops.
    Long ago I found a sunken boat like your hull and really liked it. After attaching a conventional sail and mast I found need for less weather helm, so punched a mast hole more forward. Finally I added a carefree self tacking jib with boom-batten, but it had to be so narrow that maybe a bowsprit would have helped fatten the triangle.
    Last edited by rudderless; 03-24-2017 at 08:09 PM.

  3. #38
    Join Date
    Mar 2014
    Location
    Hasslö, Blekinge, Sweden
    Posts
    356

    Default Re: Sailing rig recommendation for this small boat?

    Pine is fine, but spruce is better. I recently made two masts from stock that was intended for scaffolding platforms, perhaps something to look into?

    /Mats
    My blog about my time as a boat building student and as a rigger apprentice http://kaptenmohsart.blogspot.se/ in Swedish only, but there are many pictures :-)

  4. #39
    Join Date
    Mar 2016
    Location
    Launceston, Tasmania, Australia
    Posts
    3

    Default Re: Sailing rig recommendation for this small boat?

    I can only think of the latest developments on Paper tigers . Flimsy aluminium spars reinforced with flimsy carbon. simple cheap and effective. not traditional rig you are not asking for that. this is A solution, not THE solution. cost is low. simpler still is round section with square section jammed in there. Only other suggestion is sail a 10sq meter canoe for 3 months and you will learn not to capsize fairly quickly.

  5. #40
    Join Date
    Nov 2014
    Location
    Kaunas, Lithuania
    Posts
    70

    Default Re: Sailing rig recommendation for this small boat?

    Quote Originally Posted by rudderless View Post
    To move CE forward with max sail area, how about hanging a jib off a bowsprit. It could be self-tacking with a boom-batten.

    Long ago I found a sunken boat like your hull and really liked it. After attaching a conventional sail and mast I found need for less weather helm, so punched a mast hole more forward. Finally I added a carefree self tacking jib with boom-batten, but it had to be so narrow that maybe a bowsprit would have helped fatten the triangle.
    Yes, bowsprit and jib boom would simplify the sailing... Yet that's 2 additional spars, bringing a total to 5 to rig and un-rig each time. Anyway, they say jib can't work well without backstays, and in this boat, I'm definitely not adding any. So I guess sprit+jib is off the table.

    Neither can I move the mast, sadly. The boat is made very light, with just enough structure to hold the expected loads. If the mast is moved more towards the bow, it will end up in a place where there is absolutely nothing to keep the paper-thin plywood from getting smashed into pieces. The bow would need severe structural rework... Very complicated to make, and it will make boat heavier than it needs to be.

    Quote Originally Posted by mohsart View Post
    Pine is fine, but spruce is better. I recently made two masts from stock that was intended for scaffolding platforms, perhaps something to look into?

    /Mats
    I called several lumberyards, inquiring about spruce, apparently, I'm far in queue, but I should be able to get some spruce planks in about 3 months... Maybe worth the wait.

    Quote Originally Posted by Omnius View Post
    I can only think of the latest developments on Paper tigers . Flimsy aluminium spars reinforced with flimsy carbon. simple cheap and effective. not traditional rig you are not asking for that. this is A solution, not THE solution. cost is low. simpler still is round section with square section jammed in there. Only other suggestion is sail a 10sq meter canoe for 3 months and you will learn not to capsize fairly quickly.
    Funny you should mention that. I visited my our local hardware store, the largest hardware store chain in our country. They discontinued round aluminum tubes. Totally. They will not be manufacturing them anymore, nor importing from abroad. There were other firms that sold those tubes, but their source was that same hardware store chain. It's a little beyond belief, but I guess the only way for me to get aluminum now would be to visit old, abandoned construction sites or junkyards.
    So, I probably don't even need to make comment about carbon... Though I liked your idea.

  6. #41

    Default Re: Sailing rig recommendation for this small boat?

    You could make a Cooper's mast which would allow you to make the most of substandard wood. http://www.toledocommunityboathouse....mast/index.htm

  7. #42
    Join Date
    Nov 2014
    Location
    Kaunas, Lithuania
    Posts
    70

    Default Re: Sailing rig recommendation for this small boat?

    Quote Originally Posted by tdem View Post
    You could make a Cooper's mast which would allow you to make the most of substandard wood. http://www.toledocommunityboathouse....mast/index.htm
    Yes, I have considered that. But I do not have access to a table-saw precise enough for this. My own home-made table saw has an error margin of around 3mm and 4°. Local lumberyards charge astronomical sums for custom cuts like this, and the last time I asked for a straight 64mm wide plank, they produced a plank that varied between 60mm and 70mm throughout the length. That was at the best known and most expensive lumberyard in my city. I do not go there anymore.

    Anyway, you guys are giving me good advice, I am sorry I'm turning it down. It's just that my options are very, very limited here. As I said, a forgotten third world country. Never mind, I will figure something out. Thank you very much

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