Yet Another Svea 16

Discussion in 'Svea No:16' started by Ben Hall, Jun 12, 2022.

  1. Ben Hall

    Ben Hall United States Subscriber

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    Good morning all,

    Spotted this on the e-place for not a lot of money but with a very bent burner. I put it on my watch list and about a day later got an offer from the seller to buy it at a 20% reduced price...so how could I resist?

    svea16_copy2_00.jpg

    This stove turned out to be more difficult that usual to fettle. New fuel cap viton washer was easy. Straightening the burner out took some patience with a large adjustable wrench (spanner) and the bench vise. Its not perfect, but it's pretty close. New burner sealing washer was installed.

    Next up, the pump leather. It was totally gone. And this particular pump leather was a riveted together three price affair, where one has to replace all three pieces. Better said, the leather pump cup is riveted between the two pieces of metal, they are NOT threaded. That was a little annoying, but I had a spare in my spares kit. :)

    Servicing the NRV in an external NRV stove like this is always easy. Or so I thought! Unscrew, replace cork pip with viton, put back together. Done! (not!)

    Put the pump together and it wouldn't build pressure. Turns out the the replacement three-piece pump cup assembly needed to be lapped in to the pump rod for the center to seal. This took a while, as I couldn't find my engine valve grinding compound, and had to use toothpaste and polishing rouge as abrasives! One a nice seal was obtained per testing with mouth pressure, I put the pump back together.

    Now, it would build a little pressure, enough to run the stove, but that was it. I fetched a new flame ring from the spares and fired it up. No leaks at all, nice.

    The pump came apart a few more times with no improvements realized. So I took the NRV apart and extended the spring to put more pressure on the pip. That solved it! Apparently, even passing a leak check, the NRV was leaking. Now the pump works great!

    Made hot water for coffee on it this morning. The flame ring is obviously too short, I need to remedy that. I did put on a taller one from my spares, but it makes the stove sound like a V1 buzz bomb with a constant "passing gas" noise that varies with the rate of fire. More pressure, higher pitched constant "farting" sound. I think I need to trim down that taller ring just a hair, maybe 1mm, and see if the "farting" goes away.

    I'm not sure if the pressure-release valve is original - it's round and knurled rather than a flat thumb screw as is usual.

    And now for the pictures:
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    Thanks much,
    ben
     
  2. Ben Hall

    Ben Hall United States Subscriber

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    Stove running and making the V1 buzz-bomb-like noise:



    thanks,
    ben
     
  3. igh371

    igh371 SotM Winner Subscriber

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    Great stove Ben, and really quite a historic variant of the model. This is the final, ultimate, version of the Svea 16. Note the redesigned tank with sunken filler cap location and strengthened riser base in particular. Either very late 1930s or possibly even just early 1940s. This version of the Svea 16, together with its equivalent silent burner sister Svea 15, were probably the last external NRV stoves in commercial production. (See discussion here).
    Ian:thumbup:


    @Ben Hall
     
  4. Ben Hall

    Ben Hall United States Subscriber

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    Greetings Ian @igh371 - thanks much for the nice comments. For some reason, these Svea's with the external NRV's really get my attention and I really like them. :)

    thanks much,
    ben