Austramax 3/300 Burner Repair

Discussion in 'Fettling Forum' started by ROBBO55, Oct 4, 2018.

  1. ROBBO55

    ROBBO55 Subscriber

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    When I picked up this lantern up the perforated screen in the burner was burnt out.
    Austramax 3/300 Lantern (Late Model)

    The burner (nozzle) is a single piece with a pressed steel screen. They’re not designed to be repaired. But I thought I’d give it ago.

    Pushed the old screen out from the back and flattened it out to get the correct size.

    21-22mm dia
    Hole size - 1.4mm
    Distance between holes - 1.0mm

    1.jpg

    Looked around the shed and found a piece of perforated steel that looked suitable. I think it use to be a speaker cover. Cut a piece out using a 25mm hole saw. Making a 22mm dia circle

    2.jpg 3.jpg

    I needed to form it into a convex that reduced the outside diameter enough to fit into the burner opening. Found the end off a curtain rod that had a nice round end and a cap off an old universal joint that were about the right size. Using a press I formed the new convex screen. I used a press because I have one and it gives more control but it could be done with a hammer.

    4.jpg 5.jpg

    Now I needed to spread it out and swage it into the burner. To achieve this I ground a lip onto a steel rod.

    6.JPG

    The rod was inserted into the burner under the screen and used as an anvil.

    7.jpg

    By slowly working my way around the edges of the screen with a small hammer I was able to spread the screen out and swage it into the burner.

    8.JPG

    Testing the repaired burner.

    25.JPG
     
  2. Nils Stephenson

    Nils Stephenson Founder Member

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    Very well done and well described. It all seems to be within reach of an amateur.
     
  3. Sellig33

    Sellig33 France Subscriber

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    Whaouh, good job :thumbup:
     
  4. Matty

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    @ROBBO55

    Beautifully done. :clap:

    I was reading an old Wizard Lighting Co catalogue the other day. In the catalogue there was a part that explained the importance of keeping the burner mesh in good condition. It was insinuated that everyone knew the importance of keeping well maintained mantles and generators. It was essentially stressed that maintaining the burner cap in good condition was equally as important as maintaining the generators and mantles.
     
  5. AussiePete

    AussiePete Australia Subscriber

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    Well done, always have a go .....
     
  6. Tony Press

    Tony Press Australia Subscriber

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    @ROBBO55

    Great job!

    I’ll send you a few more... ;)

    Cheers

    Tony
     
  7. ROBBO55

    ROBBO55 Subscriber

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    Your right Nils, it wasn't that hard. Finding the raw materials was the hardest part.

    Haha Tony. I'll press some for you then you can take it from there. :lol::lol:

    Thanks Matty, did it say what was needed to keep the mesh in good condition?

    Thanks Pete and Gilles for the kind words.
     
  8. JEFF JOHNSON

    JEFF JOHNSON United Kingdom Subscriber

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    Making use of what is lying around is very practical and that's excellent fettling!:thumbup::clap::clap::thumbup:
     
  9. Matty

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    Here is the part that is most pertinent to your question.

    WizardMantlecare.jpg
     
  10. ROBBO55

    ROBBO55 Subscriber

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    Thanks Jeff, I'm often told by people I should clean the junk out of the shed. I say "There is no junk, there parts for projects I just haven’t started yet". :lol:

    @Matty
    Thanks Matty for sharing this interesting document. It raises a point that's probably overlooked. We worry about carbon in the vapouriser / generator affecting fuel flow but often neglect the burner. Food for thought. :-k
     
  11. JEFF JOHNSON

    JEFF JOHNSON United Kingdom Subscriber

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    You are correct and on the odd occasion when I have thrown stuff out , then a while later it would have come in useful.
     
  12. AussiePete

    AussiePete Australia Subscriber

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    I try to resist chucking out stuff. It seems when I do chuck stuff out, it’s not long afterwards that I need it for some project or other. Must be a law of nature.
     
  13. Mackburner

    Mackburner United Kingdom Founder Member Subscriber

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    The air intake, mixing chamber and mantle tubes may be considered to be the low pressure part of the burner and any roughness or dirt in there is going to affect gas flow. I have long ago realised that keeping these parts clean is essential. Dirty tubes here are what causes an uneven burn in twin mantle lamps. Ideally these tubes should not only be clean but perhaps polished as well. I guess it's a bit like polishing the ports in a gasoline engine to improve gas flow and therefore performance. ::Neil::
     

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