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Thread: One sheet canoe - Flo-Mo's 12ft Flywood

  1. #1
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    Default One sheet canoe - Flo-Mo's 12ft Flywood

    Building a rough prototype from cheap decorative ply, maple faced on one side.

    I still have to figure out how to embed pics from google but here is a link:

    https://photos.app.goo.gl/M6nHBATn67byFP4A2

    Also keeping a video log - first instalment:


  2. #2
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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood

    Marking, cutting and stitching the loose panels took 3hrs.

    To get symmetric panels, I had to cut a second set on the reverse side of a similar sheet. I then made butt joints to create two complete halves. This all took another 3hrs.

    Second video:

  3. #3
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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood

    Photobucket pics no longer available, will try alternatives.
    Last edited by whiskeyfox; 08-01-2017 at 09:12 AM.

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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood


  5. #5
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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood






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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood

    Nothing but clamps, tape and stitches and the hull is already more than stiff enough to handle and carry around.




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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood

    it is AMAZING how flat panels can turn into such a shapely little girl

    sw
    "we are the people, our parents warned us about" (jb)

    steve

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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood


  9. #9
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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood

    My first time venturing away from epoxy. Fingers crossed.


  10. #10
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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood

    I have experimented with ebonizing on random samples of wood scraps for a few months, learned a few tricks and now finally get the chance to apply this technique in anger.

    I have also learned a new wood word: "Chatoyance" - I always thought it is lustre, but that is apparently something entirely different.


  11. #11
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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood

    Some questions for the canoe guru's:
    How would something this size (i.e. similar to the Guillemot Kayaks Nymph) paddle with a single paddle? I would assume that the low-ish beam will require seating low down for stability.

    I have moved the cross-brace about 12" aft of midships and released the clamp that force the stern angle between the gunnels down to 38deg (it has much fuller ends otherwise). It looks rather sweet with the swede-form. This resulted in more questions -
    Why are canoes usually symmetric?
    Would a more buoyant stern have any advatages in handling with a following or quartering wind and chop?
    Does a small dory-like transom have any merit (e.g. for hanging a trolling motor)?

    I will soon start working on breast-hooks, so I would appreciate some input before blundering on.

    Guillemot Nymph (this is most likely the 10ft):




    The Hornbeck 12ft "New Tricks"

  12. #12
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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood

    Enjoying your build thread Wiskeyfox. Flomo is a genius with what he can do with one sheet of plywood.

    I think the moderate beam and lowish freeboard would be ideal for a double paddle. A single paddle might be awkward since you'll be sitting so low.

    Looking forward to some paddling reports.

    Woody

  13. #13
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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood

    I agree Woody, I have seen a number of one sheet designs and as far as looks go there are few that come close to Flo-Mo's designs.

    I have since also discovered this thread on double-paddle canoes: http://forum.woodenboat.com/showthre...-Paddle-canoes

    They all seem very similar in size and proportion to this 12ft Flywood. If it performs as well as the rest it will be that much more noteworthy for being a one-sheet design.

    This pic of a Wee Lassie shows a bit of swede-form but most of the other designs I have seen are symmetric. I have decided to go with the swede-form as it moves the lowest point on the sheer in line with the paddler's elbows and reduces the beam further forward to give better clearance for hands and paddle.


  14. #14
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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood

    I decided to build the flywood a few days ago, so far I've only marked the lines on the wood. Looking forward to any updates.

  15. #15
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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood

    Some more fiddling and tinkering...



  16. #16
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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood

    And other slow progress...


  17. #17
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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood

    Last inwale clamped and curing.
    DSC_2850.jpg

  18. #18
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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood

    A piece of wood that I picked up among white poplars growing on a river bank. I think it is black poplar though, as there were a few of them in the vicinity as well.
    It was time to open it up and see how much of the innards the termites were kind enough to leave for me.
    vlcsnap-9368488.jpg

    And what a nice surprise. Not much wood under all that bark though.
    DSC_2847-1.jpg

    Add some white ash accents and a dark bit from a packing crate and voila!
    DSC_2855-1.jpg

  19. #19
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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood

    This is looking just great! ---impressed.
    CLC Skerry = "Vingilothiel"

  20. #20
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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood

    Thanks Alan.

    Something for beginners to open boat building:

  21. #21
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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood

    It could just be because of the thin ply, but the abrupt transition from the nicely rounded bow to the hard chine did not look right to me. I added a small stiffener across the chine (inside the hull), very close to where the chine terminates. Happy with the result.


  22. #22
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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood

    Mostly just beginner basics - epoxy measuring options for small vs medium vs large quantities.
    And a lesson about cotton flox (i.e. make sure it is DRY before mixing large quantities of structural filler to prevent a bulging mess as it cures).


  23. #23
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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood

    Some structural progress: epoxy tacks, flipped, stitches out, sanded, fillets, inside taped.
    Weight before fillets was 6.6kg (14.5lb).


  24. #24
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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood


  25. #25
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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood

    Hi Whiskey,
    sorry for chiming in so late.

    Your canoe looks very nice. I followed with great interest right from the start of your project.
    Seeing your lovely work makes me want to finish my own build that I started four years ago (https://photos.google.com/album/AF1Q...dCWt8eHwibhJSs).
    All I have so far are the panels cut from one sheet of 4mm okoume plywood (250 x 122 cm).



    Cheers,
    Stefan

  26. #26
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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood

    That is such nice looking ply Stefan. I wonder how the extra thickness will affect the amount of curvature in the ply at the ends (mine is only 2.7mm).
    I look forward to see the rest of your build.

    I noticed on my bottom panel that there is even some lateral curvature amidships, which would mean a tad less wetted surface area. There is a section of keel that is dead straight, but fortunately no "hogging" - is that the right word? Would you nevertheless recommend a timber keel strip?

    Due to my limited ply thickness there is obviously very little panel stiffness, and even glassing both sides will not improve that by much. So I will have to use some stiffeners - I am considering two parallel fore-aft stringers on the outside, one on either side of the keel strip and each about 20-25cm (8" - 10") from the centerline. The additional abrasion protection would be valuable.
    On the inside I have a number of options for lateral stiffeners - from timber strips to foam core and carbon tape.

    I plan on initially using only a temporary cross-brace and seat. I would like to test the limits of fore- and aft loading as well as the maximum seat height where stability disappears.

    Here is my final effort for the day. I have never mixed such a large volume of epoxy in one go!
    vlcsnap-11245839-1.jpg

  27. #27
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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood

    Actually, that second last bit is not quite true. This was my final effort. If this build was a movie then this is what you will find after the credits when they show all the bloopers and take-outs.
    Kids, look, listen and learn. Twill weave does not allow itself to be dragged into place on a too-wet surface. This is how you turn 3.6m of beautiful fabric into premature peel-ply.

    vlcsnap-11245174.jpg

  28. #28
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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood

    Oops. Actually, more than "oops". I hope that didn't result in too much sanding.
    CLC Skerry = "Vingilothiel"

  29. #29
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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood

    New glass arrived today, along with some extra slow epoxy hardener. Using 163gsm twill (just shy of 5oz).

    In future I will leave the outer gunnel off until after glassing. This should allow the use of a squeegee instead of a brush and allow excess epoxy to be worked past the gunnel to be re-applied elsewhere. I will do the stem and stern later with narrow strips at 45deg bias.

    vlcsnap-14723703.jpg

    vlcsnap-14724498.jpg

  30. #30
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    Default Re: One sheet canoe - Flo-Mo's 12ft Flywood

    Video of aforementioned update.

    I have since also started filling the weave. I would like to finish the bottom bright, so I am using very thin layers and using the bare minimum of cabosil to prevent runs.


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