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  1. #1
    Join Date
    Jan 2007
    Location
    Alabama, USA
    Posts
    100

    Default WREN - Greenland Inspired Kayak

    Seeing Darren's build I thought I would post mine too. He has a head start on his so I guess I can't race with him. I just started cutting the plywood tonight but didn't get far.

    Wren is my design. My goals were a stable flat water boat for day tripping but could still haul some camping gear for a weeks trip. Stability was important for photography. Tracking wasn't as important, I wanted a boat that would turn in tight spots as it will be use on small creeks as well as big lakes. A retractable skeg is part of the design and will be there to improve tracking when needed. The hull will be ply, but I am going to strip the deck.

    Wren is an 18"/5.5 meters long on deck. 24"/61 cm wide. The design displacement if for us larger blokes. I designed it for an average load of 250 lbs/113 Kilos. I based that on a 200 lb/91 kilo paddler and 50 lbs/22.6 kilo's of boat and day gear. I allowed for an additional 50 lbs/22.5 Kilos when needed of gear (max) for camping trips.

    I am aiming for a light weight boat. I building it with 3mm ply and sheathing it with 4 oz. cloth. Not sure how that converts to metric? I really thing it's possible to keep the weight under 16 kilos. I am not sure I will make that, but thats my goal.



    Nothing else to show at this point. As I said, I just cut the first of the ply tonight. I hope to have something to show early in the week. Hulls go together fairly fast
    Jeff

    When we remember we are all mad, the mysteries disappear and life stands explained.
    - Mark Twain
    Excelsior Woodworks My little space on the web

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  3. #2
    Join Date
    May 2003
    Location
    South Oz, the big smokey bit in the middle
    Age
    67
    Posts
    4,377

    Default

    Stitch and glue hull?

    The strip plank deck should look good. Do you anticipate any problems around the cockpit? Not being a kayak person, I have trouble envisioning the curves.

    Nice feeling designing your own stuff. I haven't attempted it with boats but have designed enough model aeroplanes for myself and others to know how that feels

    Richard

  4. #3
    Join Date
    Jan 2008
    Location
    qld
    Posts
    159

    Default

    I'm looking forward to watching your progress, there's always something to learn. Designing your own kayak- I'm impressed. I assume this is not your first kayak.

    James

  5. #4
    Join Date
    Dec 2004
    Location
    Moonta Bay in the Copper Triangle, S. Australia
    Posts
    822

    Default

    I'm a "bigger bloke", and if could spend a month living out of this kayak along the deeper parts of the Murray River, I could be entered into the category of "smaller bloke".

    I look forward to more on the Wren, and thanks for showing the plan picture.
    Buzza.

    "All those who believe in psycho kinesis . . . raise my hand".

  6. #5
    Join Date
    Jan 2007
    Location
    Alabama, USA
    Posts
    100

    Default

    Making some progress this week. Have the panel cut out. Started wiring the hull together too.

    Expect to get the sides attached tonight.
    Jeff

    When we remember we are all mad, the mysteries disappear and life stands explained.
    - Mark Twain
    Excelsior Woodworks My little space on the web

  7. #6
    Join Date
    Jan 2007
    Location
    Alabama, USA
    Posts
    100

    Default

    Making some progress. Hull is wired together. But I have a one hump in the keel line. Got to get that fixed then I can start epoxying.

    Jeff

    When we remember we are all mad, the mysteries disappear and life stands explained.
    - Mark Twain
    Excelsior Woodworks My little space on the web

  8. #7
    Join Date
    Jan 2007
    Location
    Alabama, USA
    Posts
    100

    Default

    Made good progress. The hull is pretty much done. I still have one more project on the hull though. Thats installing a drop down skeg. I copied a design I found. I think it's really clever.



    This is my prototype. The skeg is spring (bungee) loaded. So it pulls down on it's own. The pipe will end on deck and the line will exit there and be anchored by a jam cleat. So you just ease off the line to deploy the skeg.

    The skeg is removable and the bungee is replaceable. You will just have to thread a small wire or string though the opening and pull the replacement in. I tried it and it works really well. I am impressed with it.

    I have committed to it, went ahead and cut the hole in the hull. That was a bit unnerving.

    Jeff

    When we remember we are all mad, the mysteries disappear and life stands explained.
    - Mark Twain
    Excelsior Woodworks My little space on the web

  9. #8
    Join Date
    Mar 2007
    Location
    Adelaide
    Posts
    2,139

    Default

    Hi Jeff,
    You sure are making good progress there its spurred me on with my little PDracer.
    Trick idea for the skeg a miniture version of the centreplate systems on the trailer sailers I have owned.

    Hows that monster planer of yours, sure is a great machine and interesting to see the resto.

    Regards
    Mike

  10. #9
    Join Date
    Jan 2007
    Location
    Alabama, USA
    Posts
    100

    Default

    Quote Originally Posted by m2c1Iw View Post
    Hows that monster planer of yours, sure is a great machine and interesting to see the resto.

    Regards
    Mike
    I love that thing!! I use it often. I still have a couple of small things I want to do to it, but they are minor. It's been everything I was hoping for.
    Jeff

    When we remember we are all mad, the mysteries disappear and life stands explained.
    - Mark Twain
    Excelsior Woodworks My little space on the web

  11. #10
    Join Date
    Jan 2007
    Location
    Alabama, USA
    Posts
    100

    Default

    Going a little slower than I thought. I was expecting to get the epoxy applied and start cutting the panels for the second boat today. Took me all day to get to that point and I was way to tired to start handling sheets of plywood. Even very light ones.




    It took a while but I planed the sheer clamps down to match the curve of the deck. Here you can see part of the rear section almost finished.


    I tried some new .... well actually very old methods to measure for a day hatch. Story sticks and a bevel square. I took my time and I am impressed! The fit wasn't quite perfect but it was very close. I left it just a little oversize and was able to quick trim it to fit. Worked better than anything else I have tried.

    Day hatch is a just a small compartment direct behind you on the right side. Its a good place to put a drink, camera, snacks etc. Small items you want to be able to access easily. The hatch will be held in place with rare earth magnets. It's simple to install. The magnets will pull it in place if you get it close. Thats a plus since this is behind you and mostly if not totally out of site.
    Jeff

    When we remember we are all mad, the mysteries disappear and life stands explained.
    - Mark Twain
    Excelsior Woodworks My little space on the web

  12. #11
    Join Date
    Jan 2007
    Location
    Alabama, USA
    Posts
    100

    Default

    Hull is almost done. Except for some MORE sanding! Seems that never ends!







    Once the hull was glassed and sanded (and sanded and sanded some more) I flipped it over and put a coat in the cockpit. I building it lightweight so I am using a light cloth. I wanted to add a little extra stiffness in the cockpit and some abrasion resistance. Otherwise I would have just put cloth down where the feet would be.



    Also started on the second boat. It's the same basic design, just for a lighter paddler.

    Jeff

    When we remember we are all mad, the mysteries disappear and life stands explained.
    - Mark Twain
    Excelsior Woodworks My little space on the web

  13. #12
    Join Date
    Jan 2007
    Location
    Alabama, USA
    Posts
    100

    Default

    The deck is ready to start stripping!

    Jeff

    When we remember we are all mad, the mysteries disappear and life stands explained.
    - Mark Twain
    Excelsior Woodworks My little space on the web

  14. #13
    Join Date
    Jan 2007
    Location
    Alabama, USA
    Posts
    100

    Default

    Were stripping.






    452
    Jeff

    When we remember we are all mad, the mysteries disappear and life stands explained.
    - Mark Twain
    Excelsior Woodworks My little space on the web

  15. #14
    Join Date
    May 2004
    Location
    Daylesford, Victoria
    Posts
    402

    Default

    Hi Jeff,

    Looking good! The hull shape is nice and should look great with the stripping done. Looks like a fast boat - were you able to do any stability calculations in the design program? I know your original post said you wanted something stable, but it should paddle pretty well too.

    I like the idea of the separate day hatch compartment too, very cool. Might have to steal that for a future build

    Looking forward to more pics. What sort of wood are you using for the deck?

    Regards,
    Darren

  16. #15
    Join Date
    Jan 2007
    Location
    Alabama, USA
    Posts
    100

    Default

    I expected to finish stripping the deck today but not so.

    "Missed it by that much"



    Got to have a Garage Door shoot!








    Sorry for the fuzzy photos. I think my camera has been in one too many attic or crawl space
    Jeff

    When we remember we are all mad, the mysteries disappear and life stands explained.
    - Mark Twain
    Excelsior Woodworks My little space on the web

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