Radius No. 36 Stove *

Discussion in 'Radius No:36' started by kerophile, Jul 12, 2007.

  1. kerophile

    kerophile United Kingdom SotM Winner Subscriber

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    Hi, I thought you might be interested in seeing some images of a recent addition to my stove collection. This is a Radius No. 36 stove, dating I believe from the 1930s.


    1355013852-DSCN0001_edited-33.jpg

    The stove was in good original condition when I received it but the tank internally was very dirty, and unsurprisingly the burner and jet were blocked.

    1355013860-DSCN0002_edited-26.jpg 1355013868-DSCN0003_edited-33.jpg

    I used the key from an Op 111 to extract the jet from this Radius No. 36. I then ultrasonically cleaned the jet in Citric Acid and detergent solution. I also re-pickled the burner, ran high-pressure water through it and re-assembled the stove.
    I had also inserted a brass gauze plug at the base of the burner as these are a feature of the Later Optimus No 2 stove burners.It will hopefully keep out any crud from the upstand and tank.

    The Radius 36 has a 4.5 pint tank, but the same burner size as the 7-pint Primus No. 3 that I have photographed it with. I believe that the No. 36 stove will consume about 2 litres of paraffin per hour and have a rating of approximately 15kW.


    1355013877-DSCN0008_edited-17.jpg


    For those unlucky people, who haven't yet seen a Primus No.3, I have photographed it with a Svea No 16, 2-pint roarer stove, for scale comparison.


    1355013886-DSCN0009_edited-10.jpg

    This Radius No 36 is jetted at 0.7mm, or 28 thou, which is bigger than my No 3 stove.

    It was a breezy afternoon, between showers and most of these images were taken outdoors in natural light. However, this final one was taken on the floor of my garage;


    1355013897-DSCN0010_edited-21.jpg

    I had only seen references to the Radius No 36 in catalogues before. I have a Svea No.36, but although a similarly sized stove, it has a completely different shape.

    I have heard reports of a Hipolito No. 36 in the Fylde area of the North of England but I have never seen it.

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

    kerophile United Kingdom SotM Winner Subscriber

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    Hi, I now reckon that this stove was manufactured after late 1930s/ early 1940s

    This Radius No.36 stove is clearly marked RADIUS Ltd. which is normally accepted as a later marking than the plain "RADIUS"

    Radius was founded by Strikers leaving Primus in 1913 and the Brand finally disappeared in 1963 when Optimus took over the company. So Radius operated for a total of 50 years.

    Nils Stevenson, in his research on Radius lamps, has concluded that Radius became a Limited Co. (Ltd.), and Ltd. was added to the name in 1939 or later.

    Stejar, in his research on "Six variants of the Radius 21" states "that it is safe to conclude that the first Radius 21 marked "Ltd." appeared in the very late 1930s or early 1940s

    Ross, in Feb 2012, when commenting on Stejar's post said:
    "Radius went through a big expansion in the 1930's with them setting up separate companies around the world including a Ltd company in the UK which was around by 1936, possibly earlier, with both UK & Swedish directors. Maybe this expansion prompted the use of the more recognised Ltd over AB".

    Best Regards,
    Kerophile.