The Bluets of Sherwood

Discussion in 'Stove Paraffinalia' started by presscall, May 27, 2020.

  1. presscall

    presscall United Kingdom SotM Winner SotY Winner Subscriber

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    Left to right: 6-wick Bluet, early production; 6-wick Bluet, late production; 10-wick Bluet, early.

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    Panel from the box containing the latest example. The illustration (of the 10-wick version) doesn’t match up with the 6-wick stove the box contained.

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    The later 6-wick version (centre) and the 10-wicker have the outer part of the burner fastened to the casing/pot rest - with round-headed bolts and nuts on the earlier version, pop rivets on the later one.

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    Burners exposed.

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    Economy on the more recent 6-burner of no gallery lifter - the clock-type key uppermost on the earlier burner on the right.

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    Left off the later burner as an economy measure, but the bracket and hole for the mechanism’s axle remains as a legacy of a discontinued production run detail.

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    The absence of that gallery riser mechanism doesn’t compromise the function of the stove particularly, start-up being a bit slower without the extra up-draught the mechanism provides.

    Another economy is the wick lantern type of filler cap (later version left).

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    Corresponding tank filler risers.

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    The youngest Bluet has been unused, old stock. Obvious why, two substantial stress-cracks in the brass of the fuel tank.

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    It seemed reasonable to get it functional, for one test brew at least, so I prepared the cracks (machined a V-groove along their length and flowed soft solder into/over them. Not pretty, but functional.

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    Brew time.

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    John
     
  2. G1gop

    G1gop United Kingdom Subscriber

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    Lovey stoves. I d like wick stoves.
    What do you think caused the stress cracks? faulty manufacturer?
     
  3. Twoberth

    Twoberth United Kingdom Subscriber

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    Great stoves and presentation.
    I wonder what the collective noun for multiple Bluets is? (Band, bevy, brood?)
     
  4. presscall

    presscall United Kingdom SotM Winner SotY Winner Subscriber

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    @salan3
    Undoubtedly faulty manufacture Alan. ‘Deep drawn’ pressings from brass sheet. Inadequate annealing of the brass beforehand would provoke stress cracks.
     
  5. presscall

    presscall United Kingdom SotM Winner SotY Winner Subscriber

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    The Sherwood connection suggests a ‘band’ I think, as in Robin Hood and his Merry ...
     
  6. Ed Winskill

    Ed Winskill United States Subscriber

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    Strange forest creatures, indeed....
     
  7. G1gop

    G1gop United Kingdom Subscriber

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    As it's not a pressurised container, the solder you did is great. But I wonder if anyone has come up with a cure for pressurised containers?
    Silbrazing? Trouble is just how brittle is the brass? I have wondered about a few old wick lamps I have (no value) about coating the tanks inside with something to seal them. A resin perhaps?
    Alan
     
  8. presscall

    presscall United Kingdom SotM Winner SotY Winner Subscriber

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    @salan3
    Some use a resin substance (POR15 and other brands) intended for sealing porous steel auto/motorcycle fuel tanks.

    Crucial difference in my view is that an auto fuel tank isn’t pressurised and I’d mistrust the safety of the repair, where petrol is the fuel at least.

    Silbraze? Whereas with soft solder it’s easy to prevent the heat from reaching nearby soldered joints or tank seams - I use strips of kitchen roll soaked in water laid over the joint/seam - in the case of silbraze the heat required is much more intense. Part-filling a tank with water is no good, it conducts heat away from the part to be silbrazed.
     
  9. presscall

    presscall United Kingdom SotM Winner SotY Winner Subscriber

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    Bluet puts out some heat, and is controllable.

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  10. G1gop

    G1gop United Kingdom Subscriber

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    I agree about the resin. I would only entertain it for a non pressurised tank.
    The silbrazing was for pressurised tanks, I am sure this has been talked about ad nauseum. It just seems a shame especially for old rare stoves to not be able to do something that could be safe and withstand the pressure.
    Alan
     
  11. presscall

    presscall United Kingdom SotM Winner SotY Winner Subscriber

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    In the case of the Optimus 9 I worked on - certainly a rare stove - something was possible.
     
  12. G1gop

    G1gop United Kingdom Subscriber

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    I remember that. Just re read it. A great fix. you seem to be very good at finding solutions to things.
    Alan