Optimus n°5S

Discussion in 'Optimus No:5 (inc. S & J)' started by Michel, Jan 21, 2023.

  1. Michel

    Michel Subscriber

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    Hi all
    I had this little beast since a while in my barn
    Rusty, dirty and plenty of old dark burnt kerosene.
    I had a look at the gallery and seen this n°5 have been sold in several versions (N°5, 5R, 5R..) all along the years
    is somebody able to enlight me about evolution and differences ?

    IMG_1675.jpg IMG_1678.jpg IMG_1679.jpg IMG_1680.jpg IMG_1681.jpg
     
  2. kerophile

    kerophile United Kingdom SotM Winner Subscriber

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    Hi, you have Optimus No. 5 S
    Not a Opimus No.55.

    The S is the abbreviation for Senior, and despite what the name might imply, was a slightly cheaper version of the original No.5….for example the brass used in the tank was of a thinner gauge than in the No.5.

    Best Regards,
    Kerophile.
     
    Last edited: Jan 21, 2023
  3. kerophile

    kerophile United Kingdom SotM Winner Subscriber

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    The Optimus 5R and Primus 5R were the regulated burner version of the No5 stove type.

    Hyperlinked Index
    Swedish Manufacturers

    Is the definitive work by Trevor, on stove type and date produced.

    Best Regards,
    Kerophile.
     
  4. Michel

    Michel Subscriber

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    The Optimus 5R and Primus 5R were the regulated burner version of the No5 stove type.
    what do you mean by "regulated"

    Hyperlinked Index
    Swedish Manufacturers
    Sorry I don"t understand


    Is the definitive work by Trevor, on stove type and date produced.
     
  5. kerophile

    kerophile United Kingdom SotM Winner Subscriber

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    Regulated means that the power of the stove can varied by using a control valve built into the burner of the stove.

    The hyper link document is provided in a computerised application shown on the right-hand side of the front page of the CCS site. It covers the details of all classic stoves produced by the Swedish stove manufacturers on a year to year basis
     
  6. kerophile

    kerophile United Kingdom SotM Winner Subscriber

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  7. Lennart F

    Lennart F Sweden Subscriber

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    And circa mid 1960's the 5S versions were re-named 5 as the slightly more expensive old No:5 versions were discontinued.
     
  8. Michel

    Michel Subscriber

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    WOw what a work !!!
    I will need two years :D/
    Thanks a lot