Flyfishing kick boat cat

Discussion in 'Multihulls' started by Brian Fanner, Jul 6, 2020.

  1. gonzo
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    gonzo Senior Member

    5kg????? You're gonna die of thirst.
     
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  2. Brian Fanner
    Joined: Jul 2020
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    Brian Fanner Junior Member

    Restock at lunch time :p

    With the new hull I can pack more stuff!
     
  3. upchurchmr
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    upchurchmr Senior Member

    Put vertical bow and stern shapes. That gets more bouyancy for the length.
    If you have too much then narrow each hull (much better).

    Take a look at your hull shape underwater. It is so close to a round shape you might as well just strip the bottom (only).
    If you do, sink the foot about 1 1/2 inches so it will have some longitudinal stability. This was a painfull lesson for me.
    If not, be prepared to put a small skeg on the stern, both hulls.

    How wide is each individual hull? looks very fat.
     
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  4. Brian Fanner
    Joined: Jul 2020
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    Location: Hopefield South Africa

    Brian Fanner Junior Member

    Well its kind of too late. I cut all the boards. It is fat. I think from a traditional efficient catamaran perspective its very fat but I can't have these really long narrow hulls or it will become too difficult to turn and often one is among small channels and in amongst the lillies and weed beds so I opted for shorter fatter hulls. Anyway whats done is done. Busy epoxy coating the panels already. They are quite small little hulls. I think it will be fine. So long as they are stable buoyant enough. Its really just floating around. There is very little speed involved here!
     
  5. upchurchmr
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    upchurchmr Senior Member

    Good luck :)
     
  6. Brian Fanner
    Joined: Jul 2020
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    Location: Hopefield South Africa

    Brian Fanner Junior Member

    2020-08-03 20.00.29.jpg 2020-08-04 15.07.22.jpg 2020-08-04 14.57.13.jpg

    stitching underway... when I put the top chines on I realised it was too high! So I shaved an inch and a half from the sheer. They look workable. They seem huge on the desk and tiny when I sit between the hulls. I have a feeling I may need to lower the seating position to get the center of gravity down a tad. Just need to skim the water with my butt.

    from a construction point of view I can see now where my design was a bit silly... mostly in the second chine where the ends were too curved which made it very hard to get the panels to open up. so I shaved the curves to a much gentler radius and then it all worked fine. All good... learning lots. Enjoyed the process but its murder on hands!
     
  7. Brian Fanner
    Joined: Jul 2020
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    Location: Hopefield South Africa

    Brian Fanner Junior Member

    Thinking about what you said about the skeg... Are you saying more from a longitudinal tracking stability perspective? otherwise I'm not following 100%. But I am thinking a hardwood strip along the bottom which could be laminated into a skeg could help to strengthen things along the bottom for rocks and just dragging it onto the shore... like skids almost? Thanks!
     
  8. upchurchmr
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    upchurchmr Senior Member

    I was saying that if you rounded the bottom, you needed to drop the bow and stern into the water about 1".
    If you didn't do that with a round bottom, you might not be able to keep it in a straight line, so then you would need a skeg.

    With the shape you have I have no idea if you would need one. Personally I wouldn't put one on unless it showed to be required. And yes I was talking about longitudinal tracking stability.

    Skids? Your choice - you know how you will use the boat.
     
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  9. Brian Fanner
    Joined: Jul 2020
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    Location: Hopefield South Africa

    Brian Fanner Junior Member

    20200811_191232.jpg 20200811_164426.jpg 20200809_171135.jpg

    Some good progress. I'm not 100% sure what exactly to do moving forward. I've stitched and glued and removed the stitches and half faired the outside of the hulls and put on a coat of white tinted epoxy to help see whats going on with the faring. I'll probably focus on interior seam taping and mechanism for attaching the pontoons to the frame next.
     
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