Optimus No.48 from 1970/1980s ?

Discussion in 'Optimus No:48' started by kerophile, Sep 25, 2014.

  1. kerophile

    kerophile United Kingdom SotM Winner Subscriber

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    Hi, I received this stove as a tank and cap-less burner a few days ago. The tank still had a lot of the original lacquer, although it was baked-on and very discoloured through use.
    I fettled the stove, fitted a pair of S. Korean replacement burner caps, a home-made windshield, and a set of stainless steel legs.
    Here are some photos:

    1411626622-St.373-Op.48-Hyde--1.jpg 1411626632-St.373-Op.48-Hyde--2.jpg 1411626642-St.373-Op.48-Hyde--3.jpg 1411626654-St.373-Op.48-Hyde--4.jpg 1411626665-St.373-Op.48-Hyde--5.jpg 1411626677-St.373-Op.48-Hyde--6.jpg 1411626692-St.373-Op.48-Hyde--7.jpg 1411626703-St.373-Op.48-Hyde--8.jpg 1411626715-St.373-Op.48-Hyde--9.jpg 1411626727-St.373-Op.48-Hyde--10.jpg 1411626746-St.373-Op.48-Hyde--11.jpg 1411626759-St.373-Op.48-Hyde--12.jpg 1411626772-St.373-Op.48-Hyde--13.jpg 1411626792-St.373-Op.48-Hyde--14.jpg 1411626805-St.373-Op.48-Hyde--15.jpg 1411626817-St.373-Op.48-Hyde--16.jpg 1411626830-St.373-Op.48-Hyde--17.jpg 1411626844-St.373-Op.48-Hyde--18.jpg 1411626884-St.373-Op.48-Hyde--19.jpg 1411626901-St.373-Op.48-Hyde--20.jpg

    The Optimus 45 and 48 stoves were in production from at least 1917/18 until the end of production if 1989/90. So over 70 years.

    This is a late Optimus 48 stove. The makers marks are on the burner body and tank base are"Made in Sweden" alone.

    The tank markings are not of the same quality as early production, being somewhat shallow, and uneven in depth.

    The NRV had an "all in one" rubber cone, rather than a brass carrier and pip. This cone was still supple and was re-used.

    The pump shaft is made of steel, and the piston has a leather cup washer, which was still good after soaking in neatsfoot oil.

    There were no markings on the filler cap nor pump cap.

    The stove operated well with the new caps. The windshield was made from a stainless steel sugar bowl. It looked a bit garish at first but once it had developed a straw-coloured oxide film, I thought it blended in with the stove.

    The "tea-test" was successful and with the nice weather I enjoyed my morning tea outside.

    Best Regards,
    Kerophile.
     
    Last edited by a moderator: Jun 27, 2015
  2. kerophile

    kerophile United Kingdom SotM Winner Subscriber

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    Hi, Polished stove and bright sunlight are not a good combination for photography, so here are a couple of shots of the tank markings:

    1411627970-St.373-Op.48-Hyde--21.jpg 1411627981-St.373-Op.48-Hyde--22.jpg

    And here is a photo of the Op.48 "part stove", as received:

    1411627994-__80.JPG

    Best Regards,
    Kerophile.
     
    Last edited by a moderator: Jun 27, 2015
  3. shagratork

    shagratork United Kingdom Moderator, R.I.P. Subscriber

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    Wonderful job, George.

    Cinderella transformed into a Princess. :D
     
  4. kerophile

    kerophile United Kingdom SotM Winner Subscriber

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    Hi Trevor, Thanks.
    We all love flame shots, so here are a few. As you can see, at high power there are still come carbon particles from the burner giving trails in the flame pattern:

    1411629406-St.373-Op.48-Hyde--23.jpg 1411629419-St.373-Op.48-Hyde--24.jpg 1411629432-St.373-Op.48-Hyde--25.jpg 1411629443-St.373-Op.48-Hyde--26.jpg

    Best Regards,
    Kerophile.
     
    Last edited by a moderator: Jun 27, 2015
  5. mr optimus

    mr optimus United Kingdom Subscriber

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    Hi good morning George, as always a superb first class documented and highly interesting post.

    Congratulations George on a brilliant score and addition, the 48 and 45 are my favourite with this style of stove. I adore the discus shape of the tank, and they are so universal and practical, being large and collapsible. With these you have a large powerful stove that is ideal indoor use as well as outside use, camping for family or single use, not as concealable as a 96 or even a 210, but you have a large powerful collapsible.

    Well done, George, on a awesome score and forgot to mention the home made windshield looks fantastic; it really suits the burner.
     
  6. kerophile

    kerophile United Kingdom SotM Winner Subscriber

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    Hi, we now have a reasonable number of Optimus No.48 stoves in the Gallery.
    On examining the features on the Optimus 48 stoves in the Gallery, I believe that the stove I have just fettled appears to be contemporary with these Optimus 48s:

    https://classiccampstoves.com/threads/9152

    https://classiccampstoves.com/threads/8978

    It would be nice if the Optimus48 now had a section to themselves in the Optimus lineup.

    Best Regards,
    Kerophile.
     
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  7. yonadav

    yonadav Subscriber

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    Beautiful stove. I like the windshield. Unfortunately we don't have these sugar cans to use as raw material.

    Yonadav
     
  8. shagratork

    shagratork United Kingdom Moderator, R.I.P. Subscriber

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    Hi George

    I think we now have seven 48s in the Optimus 'Other Models' Gallery.
    I agree that it should have its own section.

    I do not want to pre-empt Ross, but I don't think it will happen until we change to CCSv4.
     
  9. Spiritburner

    Spiritburner Admin

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    Moving posts from Others to the new sections is easier on CCSv4 but if we have a hiatus in development I will try to catch up with it here.
     
  10. Doc Mark

    Doc Mark SotM Winner Subscriber

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    Morning, George,

    Sweet Bride and I dearly love our Optimus 48 stoves. They work wonderfully, are easy to use, quiet, and reliable. From full power, to a delicate simmer, the 48's can do it all!!

    As with all your stoves, this neat 48 looks a treat, and you've done a fine job on getting it back to doing what it does best. Thanks for sharing this one with us, and well done! God Bless!

    Every Good Wish,
    Doc
     
  11. David L

    David L Subscriber

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    Nice stove.
    What can you tell us about the making of the windshield?

    David L
     
  12. kerophile

    kerophile United Kingdom SotM Winner Subscriber

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    Last edited by a moderator: Jul 1, 2015