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Thread: GIS Yawl

  1. #76
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    I have again tweaked the rig for the yawl and am happier every time. I raked the mizzen further fwd. and the mast a hair aft and it looks SO MUCH better.

    Mik, I have been doing this on a fairly accurately scaled drawing about 3/8" = 1' and wondered if you had a way to accurately measure the rake for the spars. I usually do that at more like a 1" = 1' scale. Do you think I should just scale it off this small drawing or try to loft it out larger?

    Another Q: the aft tank is set pretty low to use as a mizzen partner...do you think I should raise the aft tank a little higher to better brace the mizzen, which is about 9' tall.

    Cheers,
    Clint

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  3. #77
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    Shoot me you latest PDF or jpg and I will have a closer look.

    Spars often don't need a lot of bury because the decks can take almost any amount of side load.

    If you measure the rake by vertical distance vs horizontal distance over the length of the spar that will set up ok for step vs partner taking measurements off the bulkhead or whatever.

    Good old trig.

    By the way .. don't get too worried about sorting the mast rake ... the sail outline is by far the dominant shape

  4. #78
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    The mizzen is only 14 SF. Enough sail area?

    The mizzen has been raked up (and the mast raked maybe an inch aft) but any more the CE shifts forward a bit much and the mast will need to get raked more to compensate.

    Looks better though doesn't it?

    The other big Q is whether the low aft tank will support the mizzen (about 9' tall).

    Clint

  5. #79
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    Howdy,

    Looks OK. Whether it is big enough depends on your Centre of Effort calculation to make sure it lands about the right position relative to the centreboard. I definitely would not want the centre of effort to be further forward than the original boat ... balance is about right and can be adjusted with small fore and aft adjustments in the sail if one is so moved.

    So don't want it creeping forward.

    Providing the gluing of partner and step is good and an adequate bonding area the tank top and bottom will have no problem with the lateral forces. I think I mentioned how they can glue to the transom, the underside of the deck and the centreline stiffeners for the deck.

    I don't know if the Aesthetics have really changed much. But it is in the eye of the beholder. I think it will be fine and am really more concerned about the tech side.

    Best wishes
    Michael

  6. #80
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    TX, Mik, I am more concerned about aesthetics than the tech side, meaning there will be good timber and good glue joints to back up the tank and mizzen. The original CE and new CE are in line. Thanks for looking.

    Clint

  7. #81
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    May 2008
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    Default Xing Fu......Happiness

    Well, Here is a Photoshop rendering of Xing Fu, my GIS Yawl. She'll retain the original step for sailing sans mizzen.

    I named here because of the happiness of getting our daughter from China which happens in a couple weeks. We have been extremely busy with adoption paperwork. I've been starting up my business and feeling pretty successful. Part of plan is to offer Goat kits, spars, and complete boats for the Goat and rowboat (the kids will continue to do the rowboat next year though a Goat may be used as the project, too). I intend to have Xing Fu at the Wooden Boat show next year. This past year was my first Show and a very good one having won an award for my rowboat, Drake. In the works, too, is a 1947 Flying Fifteen that I will be restoring also for display at the Show. I've also just injured my neck which pushes off my work load some. Lots going on!

    I have all the parts cut for my Goat, a stave taper jig ready to go for producing Birdsmouth spar kits, and spar halves for a yard and boom. Most likely in September at this point is when I will dry fit the boat, finalize my patterns, and begin glueing the boat together. I have to time it right so I can also work on the FF.

    With my bumb neck, my website will be getting well up to date this week. Feel free to check it out.

    Cheers,
    Clint
    Last edited by CCBB; 29th July 2009 at 11:00 PM. Reason: Corrected weight in drawing

  8. #82
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    Very nice, Clint.

    BTW--Weight is listed as 1300 lb but I can't see a mizzen adding that much weight...
    The "Cosmos Mariner,"My Goat Island Skiff
    http://s176.photobucket.com/albums/w168/MiddleAgesMan/

    Starting the Simmons Sea Skiff 18
    http://www.flickr.com/photos/37973275@N03/

  9. #83
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    Fixed it, thanks.

    Clint

  10. #84
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    Very interesting Clint. Did you have to alter the dagger board casing/slot position at all to compensate for the mizzen? The reason I ask is that the mast and casing appear to be in the same position and wouldn't some adjustment be necessary to counter the extra w/helm? It looks better than I thought it would!

    maybe you can balance the mizzen with a jib on a bowsprit Pics please

  11. #85
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    Bruce the mast is stepped forward of BHD #1 to account for the shift in the CE. The CE shift is small since the mizzen is small and you don't account for all of the sail are of the mizzen (I used 60% of the 15 or so square feet). So the original step is preserved and you have the choice of two steps. When I build the boat, I'll have pictures that will show a box, in which the mast will be stepped, built off the forward face of BHD #1. There will be a similar structure built off the transom for stepping the mizzen into the tank. So they tanks stay sealed off.

    --Clint

  12. #86
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    Quote Originally Posted by Compass Project View Post
    Bruce the mast is stepped forward of BHD #1 to account for the shift in the CE. The CE shift is small since the mizzen is small and you don't account for all of the sail are of the mizzen (I used 60% of the 15 or so square feet). So the original step is preserved and you have the choice of two steps. When I build the boat, I'll have pictures that will show a box, in which the mast will be stepped, built off the forward face of BHD #1. There will be a similar structure built off the transom for stepping the mizzen into the tank. So they tanks stay sealed off.

    --Clint
    Gotcha! Thanks Clint.

  13. #87
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    Hey gang. Thought I'd drop in and give an update on the GIS Yawl project. A lot is happening to delay the project. The parts are made. But my space is full of paying work right now. I am no longer with Compass Project (laid off). My co-workers are running a few programs, but my programs have no funding. So I am forced to go full time into boatbuilding much sooner than I thought! I have some work, oars, a sail rig, a Beetle Cat restoration. I need more! I will spend some time kitting out my Drake Rowboat () in time for the WoodenBoat Small Boats magazine to come out (hint, hint: I'll leave you in suspense for what might be featured in there!). Plans will be inked and offered up for good. I am building a couple prams for a family. Other than that I plan to make some 7 1/2' oars for Drake, 9' oars like the ones in MIK's GIS plan, and I really hope I can sneak in a GIS build.

    But the big competitor for that time now...drum roll....is a newly aqcuired Uffa Fox Flying Fifteen (FF) from '49 in superb condition and in my driveway for a complete restoration (www.flyingfifteenfrolic.blogspot.com). She has original Sitka mast and boom, Egyptian COttom sails in fine condition, and all hardware original. I own her with a relative-in-law who I respect greatly, who is suffering from MS, and who is responsible for getting me into boatbuilding, a life changing event for me. So this is a special project. The plan is to get her looking shiny and new again and to the Wooden Boat Show next June.

    But I still hope to sneak in a Goat somehow. Do people think a really nicely built Goat would sell? My concern, honestly, is that most people would build there own rather than pay top dollar for a professionally built boat. Would a Goat fetch 8,9, 10K...would someone pay that for a sailing skiff? If the answer is no, it will be hard taking time to do it when I can be on paying work. Anyway, that is my dilemma, I am broke, needing all the work I can get, but still very much need a way to get on the water in the rare, occasional morning, row out to find some wind, and sail.

    Any thoughts on my dilemma would be great. Any body who needs a nice set of oars or spars or a boat or know of anyone that does, please let me know. My website show what I can do: www.clintchaseboatbuilder.com. I am in a tight spot...normally I wouldn't directly self promote like this on any Forum, but I am in need here. It could be worse, I try to remind myself.

    Cheers,
    Clint

  14. #88
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    Does the FF have all the original fittings. Would love to see the detailed pics of those. Might be just as remarkable as the ones I took of an antique 505 (about '61) a while ago.

    http://www.flickr.com/photos/boatmik...7604523269212/


  15. #89
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    Hello Clint,

    Interesting question: what kind of boats would people be interested in to have built for them by a professional boat builder.

    Personally I am thinking of the following:
    - not too complicated tenders (like the prams you are mentioning) as these are relatively inexpensive, with the benefit of having the boat professionally built at a high standard. And this kind of boats likely form a large part of the total number of wooden boats built anyway.
    - complicated larger boats (glued clinker and such) that require more detailed and complicated work (like your beautiful Drake) that people cannot imagine being able to build themselves at a decent standard.
    - boats intended for racing.
    - complicated parts like oars, spars and foils (especially repair jobs and such).
    - outboard motored fishing boats!

    I am not sure whether people would consider a boat building professional for bigger but construction wise simpler sail boats like the GIS. Most people would probably consider such a boat within their capabilities and/or might not think that it would be worth the price tag of a professional build (please note that I fully appreciate that the builder should be allowed to earn a decent income).

    In other words: I think it more likely that people would spend 12K on Drake than 9K on a GIS.

    Is MIK aware of any of his designs built by professional boat builders for clients?

    I wish you the best with your business and hope that it will thrive!

    Best regards,

    Joost

  16. #90
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    Hi Clint

    I don't see any reason that the Goat would not be successful built commercially. Most people don't believe they have the skills to build any sort of boat. The Goat's advantage is that, properly set up, you can churn them out relatively quickly and easily have more than one on the go at a time.

    Personally, I think a nicely turned out Goat like you can do, would be quite a hit at a a market day type of event. Woodie type shows you need to spruik the more traditional planked type of boats.

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