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Thread: FootyCAT Build Log

  1. #1
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    Default FootyCAT Build Log

    Well I finally decided that i really had to start from scratch and re build a Footy Catamaran to meet the current rules.

    The first FootyCAT I took up from a local club member who thought it might be fun to do a cat having seen my 507 on the local lake.

    His concept was in ply with lots of bulkheads that got in the way of all sorts - so in the end I decided to start again.

    From the little time I had managed to get it to work I realized that the hull needed a goodly rocker.

    I had spoken to Gary Sanderson about his famed "Duck" & "Thintrekka" with their delightful fiberglass hulls very light...

    So I decided to have a go for FootyCAT. Andrew Halstead expressed his fondness for Blue foam and as I had a lump that I had liberated from a skip, I hacked away at it till I had a design I liked.

    Next I covered it in cling-film and proceeded to try to cover it in strips wetting them - oh what a messy job - Gary I take my hat off to you.

    Still it was my first time and hey I got a hull off the foam plug.

    It was then that I realized that something was drastically wrong.
    As the foam plug came out I realized it was deformed like it had melted???

    I had forgotten the exothermic reaction of the resin and hardener.. NUTS

    Start again

    More in next post
    Rgds
    AndyT
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  2. #2
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    Default Re: FootyCAT Build Log ~ page 2

    Well the next step was to reconsider my options whilst sanding the first hull of FootyCAT had reduced the weight, I knew that I needed to be so much lighter.

    So I decided that I had to go to Vac forming.

    This time I used MDF for the plug - I prepared the plug very carefully and thought that I had done a good job.

    I took it to my local vac man crossing his palm with the necessary reddies, he put my plug through the process.

    The 1st one was done with 1mm plasticard ~ it showed how badly i had prepared the plug ~ I was ok about it though because this was my 1st time and we all make mistakes right ~ but hey its fun trying ......

    So we did another but this time with 1.5mm now this was a whole different ball game. Yes it still had the imperfections but it was no where near as bad.

    More on the next page
    Rgds
    AndyT
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  3. #3
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    Default Re: FootyCAT Build Log ~ page 3

    Now dont get excited and expect BIG BOOBS just be satisfied with my commenrary and keep your mind on the subject please.

    Right where was I ~ ok so I cut the hull from the waste and (using my Goop) stuck a thin off cut round the inside of the hull so as to form an inwhale.

    I reused the keeles and rudders from the originla FootyCAT (no point in not recycling) and installed them into the 1st hull.
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  4. #4
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    Default Re: FootyCAT Build Log

    Oh ya man

    Looking good.

  5. #5
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    Default Re: FootyCAT Build Log ~ page 4

    Thanks Nigel

    So the next step was to put a Keel support in, again this was done from scrap with a slot cut in the middle to go over the top of the keel and then slipped under the inwale where it is "Gooped" in place.

    The deck was installed over size, with goop round the gunwale and then applied upside down to the deck.

    Once the goop had set, I then trimmed off the excess and installed the rudder tube
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  6. #6
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    Default Re: FootyCAT Build Log

    Andy,

    Looking very good - is this within the 6 inch box?

    Have you discovered the solvent glues which weld styrene? Details available if required (ca va sans dire). They are water-thin, applied with paintbrush and wick into joints.

    All my hulls are done with epoxy resin - not polyester. Epoxy is much cooler in the cure (it takes longer) and doesn't eat foam at all! Also the smell is less with epoxy - the wife will complain, but not leave

    Rig?
    Rigs?
    andrew

  7. #7
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    Default Re: FootyCAT Build Log ~ page 5

    So now i had the enviable task of making it fit the box with a cross section that had to house the electronics.

    I considered a simple box but then thought it needed something else so once again I took to the MDF and constructed a compartment and hatch that I then had vac formed.
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  8. #8
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    Default Re: FootyCAT Build Log ~ page 6

    Things were now moving at a pace as I hoped to have FootyCAT at least ready for Bourneville this weekend even if not to compete.

    So using my special Goop, I attached the centre trampoline and my adjustable mast point.

    I then fared off the keel with some Miliput and once dry, a lick of gloss black to blend it in

    A bit of overtime in the workshop after work should allow me time to sort out the servos etc.

    Happy daze
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    Last edited by AndyT; 05-08-2009 at 02:46 AM.

  9. #9
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    Default Re: FootyCAT Build Log ~ page 6

    looks very nice! What kind of rig are you planning for this? Most multihulls use a very small jib, just to help with tacking, which seems to be a problem with smaller multihulls. I don't want to rain on your parade, but you do know that this isn't allowed under footy rules, right? If your just building a cool boat, right on, but I would probably expand the beam a little. It would help with resisting knockdowns. I wonder how a mcKormick rig would do on this boat? I'm very interested in seeing this sail, so get her in the water!
    The truest things in life are often spoken by morons.

  10. #10
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    Default Re: FootyCAT Build Log

    Hi there ~ there is nothing in the Footy rules to say I cant do it, that is unless you know different?

    My sliding mast step is designed to accommodate an assortment of rigs and I plan to give her a try at Bourneville so long as I get away from this PC to fit the electronics
    Rgds
    AndyT
    Footy Pie-Rat

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