Optimus 96, 1930 date or thereabouts

Discussion in 'Optimus No:96' started by presscall, Nov 5, 2017.

  1. presscall

    presscall United Kingdom PotY Winner SotM Winner SotY Winner Subscriber

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    Bryan Miller’s classification version 2 - sort of, because this example has the ‘pressed’ (as opposed to machined) pump knob of Bryan’s version 2 but has folding legs, while the version 2 has fixed legs.

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    Cast iron flame plate.

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    Stove tank base, stamped ‘A’, but what it signifies is unknown.

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    Stove box has had the rust halted but has lost all but faint ghosts of its paintwork. Closure catch is missing too. I may have a go at making one from tinplate.

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    From another example in the Stove Reference Gallery, here’s how that box front should look.

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    The distinctive pump assembly has some interesting details.

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    I last encountered the need to replace a pump cup washer by sliding it on from the pump knob end on a pre-1911 Primus 100. It’s because the securing nut threads were well peened over by the manufacturer

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    Pump cup mounting boss has grooves around the circumference - I can only suppose they serve as oil retention grooves comparable to those found on internal combustion engine pistons.

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    Instructions carry an illustration of the ‘version 2’ with fixed legs, an illustration that appeared in Optimus catalogues alongside ‘96’ entries long after later versions were being marketed.

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    Performs beautifully.

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    John
     
  2. Tony Press

    Tony Press Australia Subscriber

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  3. ROBBO55

    ROBBO55 Subscriber

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    Lovely little stove :clap::clap:
     
  4. hikerduane

    hikerduane Subscriber

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    Running very good. I only have three or four, will have to see what versions I have.
    Duane
     
  5. Wolfie

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    You mention, "Stove box has had the rust halted but has lost all but faint ghosts of its paintwork."
    I'd like to know more about how to perform this task on a recently purchased 1951 Primus 96 box?
     
  6. kerophile

    kerophile United Kingdom SotM Winner Subscriber

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  7. Wolfie

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  8. Wolfie

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    Hope I didn't hijack your thread John, great pictures & info. I'd like to know if you can trade the burner on these to a quiet burner safely?
     
  9. presscall

    presscall United Kingdom PotY Winner SotM Winner SotY Winner Subscriber

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    The ‘lipstick’ vapouriser and burner head is retained and a converter cap creates a silent output. The original converter caps are very rarely found these days but modern reproductions are available.

    John
     
  10. Wolfie

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    Thanks John,
    Is that a Yes, you can replace the roaring burner with a silent output burner? Original silent "lipstick" converter caps being very rare, but replacing with a modern reproduction.
     
  11. Tony Press

    Tony Press Australia Subscriber

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  12. kerophile

    kerophile United Kingdom SotM Winner Subscriber

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  13. Wolfie

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    Thank-you Kerophile, Tony Press, Presscall (John), very helpful.
    I purchased one from Gary (aka Bernie Dawg) today.
    I'd like to know, can I safely use one like I see on some Primus/Optimus stoves with the retaining wire holding them down?
    I see some on ebay, such as the following link that I'd like to purchase & try.
    Looking for insight about this being unsafe or a potential problem? Or not?
    https://www.ebay.com/itm/1x-KEROSENE-STOVE-SILENT-BURNER-PARAFFIN-STOVE-CAMPING-STOVE/122784606527?_trkparms=aid=222007&algo=SIM.MBE&ao=2&asc=41376&meid=4c013db2e182430e8f689566c31c7db2&pid=100005&rk=6&rkt=6&sd=302394920545&_trksid=p2047675.c100005.m1851
     
  14. Tony Press

    Tony Press Australia Subscriber

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    @Wolfie

    I’m not quite sure whether you are asking one or two questions.

    First, if you’re asking can you use a wire to hold a BernieDawg silent damper to the burner bell, I don’t see why not (don’t use copper).

    Others here may have a comment on this.

    Second, if you’re also asking about Indian-made burners, check here first with the brand name. Some are not threaded very well. I have a box full that need re-threading.

    Cheers

    Tony

    Edit: Take note of what @presscall says below.
     
    Last edited: Nov 13, 2017
  15. presscall

    presscall United Kingdom PotY Winner SotM Winner SotY Winner Subscriber

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    Your link showed a burner that wouldn’t fit your Optimus 96 however. It’s a burner to fit a two-pint stove - the base thread of the ‘96’ lipstick burner is totally different from that on a two-pint stove.

    John
     
  16. Wolfie

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    1. Is there a India or any other country style burner similar to the one I posted the link to that would work on the '96'?
    2. Good to know about bad threading, as to not end up with box full as well.
     
  17. Tony Press

    Tony Press Australia Subscriber

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    @Wolfie

    As far as I know, there are no longer any available newly manufactured burners (generators; vapourisers) for the 96.

    Converting a “lipstick” burner stove to a conventional silent burner stove would be a home/workshop job (see what @presscall said above).

    Cheers

    Tony