Weaverbird - the refit

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  • 24 Mar 2017 14:57
    Reply # 4687553 on 4686067
    David Tyler wrote:

     I've made a single burner cooker using a Maxie meths burner as I found this to be an excellent piece of kit in operation and efficiency - but not, as both Annie and I have found, quite so good for longevity. However, I did get several years use from a burner, with no maintenance required at all. 

    David, what parts of the Maxie wear out (burn out)?
  • 24 Mar 2017 14:55
    Reply # 4687548 on 3994048

    I did some head to head comparisons of the Origo and the Maxie.  The Maxie is indeed more efficient (amount of fuel required to boil water) and faster at bringing 1L of water to boil (takes about 90% of the time the Origo does).  Also, I think the Origo doesn't have an ideal flame pattern, the handles on my pots get very hot on the Origo, while they stay cool on the Maxie.  I find the Origo workable and the Maxie one step closer to a propane stove.  Although the Origo wins hands down for safety.

    I think one of the things that can get overlooked is fuel quality.  This probably varies a lot over the world.  Here it Canada, it is tougher to get denatured ethanol and folks often use wood alcohol (methanol) instead.  Methanol has a lower heat content and this turns a workable stove into one that is not.  Even ethanol can vary in terms of the water content or the percentage of other materials used to denature it, which can effect the heat you get out of it.  

  • 23 Mar 2017 21:30
    Reply # 4686072 on 3994048
    Anonymous member (Administrator)

    I also recommend this thread for those interested in cookers.

    BTW, today I was out in Ingeborg with a mate and we opened a can of soup and heated it on the Origo 3000. After having brought it to boil with the burner at full steam (yellow, inefficient flame), I turned the burner down to lowest setting. This was still enough to keep the soup simmering, and now the flame was nice and blue, which I conclude must be quite efficient (oxygen-rich = full combustion). Can that be so bad? I admit I haven't tried to fry a steak on it  -  is the problem that you don't get enough heat out of it?

    Arne


  • 23 Mar 2017 21:05
    Reply # 4686067 on 3994048

    Weaverbird has been out of commission over the winter, so I haven't been using either the heads or the cooker.

    I'm confident that the heads is going to be OK. No, there isn't a stirring device; the idea is to add a handful or two of medium after each use, and that means that a bin of medium has to be readily accessible, as an essential part of the scheme. I haven't bothered with installing a fan so far, but have put a good cowl vent overhead.

    I bought an Origo and came to the same conclusion as you after just one lighting of one of the burners. I've made a single burner cooker using a Maxie meths burner as I found this to be an excellent piece of kit in operation and efficiency - but not, as both Annie and I have found, quite so good for longevity. However, I did get several years use from a burner, with no maintenance required at all. The only supplier, Whitworth in Australia, will only despatch to within the South Pacific area, so to get a burner or a complete cooker, you'd have to persuade someone in Australia to receive it and forward it to you.

    First, I built this burner into a 22cm stockpot, and tried to gimbal it. This was not satisfactory, and now I have built it into a fixed 18cm pot (no photo). This will take 16cm pans, and is what I will have to use this summer. I have a 16cm pressure cooker, kettle and saucepan.

    I've been trying to invent a meths burner that can be made in a home workshop, but with no success so far. This project will have to "go on the back burner" now, as I'm running out of time.

    Last modified: 24 Mar 2017 09:19 | David
  • 23 Mar 2017 20:26
    Reply # 4686022 on 3994048

    Peter, 

    Do you want to 'borrow' my elderly Primus (again!). 

    Jonathan  



  • 23 Mar 2017 19:19
    Reply # 4685925 on 3994048

    David

    Is there any update on the success or otherwise of the DIY composting head, and the cooking arrangements aboard 'Weaverbird' ?

    I'm in the process of deliberating on what to do with the current cooking set up I have.  I bought the boat with a twin Origo stove.  Having used it a couple of times to boil the kettle I know that I'm not going to be able to cook anything other than reheat soup or boil water.  I've looked at a Taylors hob but remembered you were working up a solution...

    The head that's on the boat is a standard Lavac.. but it's broken so replacement is the order of the day and into the bargain fill a few more hull openings.  I've bought the same pieces of kit you bought.  Do I need to factor in some stirring device?  I've added a small fan..

    Peter




  • 13 Feb 2017 07:53
    Reply # 4606284 on 3994048

    I'd better say, in case it's not obvious, that the mast has a wooden plug in the bottom, extending in the form of a tapered tenon (large enough to carry the horizontal loads). The plug is bonded in with Sikaflex. It doesn't matter what shape it is, so long as it is not round - that will stop the mast from turning. It is well waxed before the mast is stepped. The fit within the mortise is slack, and casting polyurethane is poured down the hole, to flow through a channel left in the lower level of plywood and rise up around the tenon and the very bottom of the mast tube.

    Last modified: 13 Feb 2017 07:59 | David
  • 12 Feb 2017 21:00
    Reply # 4605731 on 3994048

    Thanks David - its great cooking to a recipe.

  • 12 Feb 2017 18:32
    Reply # 4605571 on 3994048

    null

    Block of mahogany shaped to the hull, & bonded with chopped glass + epoxy.
    4 x 12mm ply with a pyramidal mortice.
    1 x 12mm ply with a round hole 5mm bigger than the mast.
    Hole to pour polyurethane.

    Last modified: 12 Feb 2017 18:33 | David
  • 12 Feb 2017 17:33
    Reply # 4605523 on 3994048

    any chance of a pic of what you did at the bottom please

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