PRIM COMPACT ПРИМ КОМПАКТ

Discussion in 'Russia' started by gieorgijewski, Feb 9, 2020.

  1. gieorgijewski

    gieorgijewski Subscriber

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  2. The Warrior

    The Warrior United States Subscriber

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    Very nice. Have never seen one before.
     
  3. Afterburner

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    Yes, very nice and compact stove! :thumbup::clap:
     
  4. gieorgijewski

    gieorgijewski Subscriber

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    power circa 3 kW
    after work with 111 - my idea of "compact stove" was changed - thats construction needs some work to start
    metal box - have "right places" for every parts +
    question is - is plastic box for spare parts could be stored inside when stove is burning? if no - idea of "easy open" spare parts box is missed
     
  5. Harder D. Soerensen

    Harder D. Soerensen Denmark Subscriber

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    @gideon - Your favorite stove ;-)
     
  6. presscall

    presscall United Kingdom SotM Winner SotY Winner Subscriber

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    @gieorgijewski
    My example is the only stove I’ve had that I’ve given up on getting to fire up properly! You’ll know I don’t give up on a fettling challenge easily, but this one tried my patience and then some.

    Now returned to my ‘deep storage’ pile.

    It fired up and maintained vapourisation but the flame pattern was irregular and getting the tank pressurised with a feeble, short-stroke pump (O-ring type?) was a lot of effort for not much gain.

    Oganek’ and the Optimus 8R clones are much better stoves in my opinion.

    John
     
  7. Harder D. Soerensen

    Harder D. Soerensen Denmark Subscriber

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    @presscall
    Agree on the Ogonek (PT-2) and the PT-1/8R clones. They are both easy going work horses - especially the Ogonek.
     
  8. gieorgijewski

    gieorgijewski Subscriber

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    It is sad message...
    i think i will play with PK tomorrow ...
    ------
    from last month -" i uderstand" - 8R is "smallest beast" -> PT1 is the bests nickled versions of them
    allways PT2 was the wanderers best friend "in the rain, inthe snow..."
    PT1 is smaller then Enders Baby - lol
     
  9. Harder D. Soerensen

    Harder D. Soerensen Denmark Subscriber

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    @gieorgijewski
    The PT-2 I have, is still the one you helped me get. That large tank last quite a while.
     
  10. gieorgijewski

    gieorgijewski Subscriber

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    could You make test PT2 vs Svea 123?
     
  11. Harder D. Soerensen

    Harder D. Soerensen Denmark Subscriber

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    I have no Svea 123 anymore, as I was not that happy about it. - My Primus 71, Meva 2140 -and my Jewel 34 works stronger and easier. I know others like the Svea 123 - But I never made good friends with mine.
     
  12. presscall

    presscall United Kingdom SotM Winner SotY Winner Subscriber

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    Maybe yours will be ok. Good luck.
    That describes exactly how I felt about the Prim Compact, Harder.
     
  13. gieorgijewski

    gieorgijewski Subscriber

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    John - Et tu Brute contra me...
    lol
     
  14. gideon

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  15. gieorgijewski

    gieorgijewski Subscriber

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    my example is from 1992
    i remeber that time - it was not good time for production
    @gideon i'am "before the battle" - if You have "any" helping technical documentation...
     
  16. gieorgijewski

    gieorgijewski Subscriber

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  17. presscall

    presscall United Kingdom SotM Winner SotY Winner Subscriber

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    @gieorgijewski
    Out of respect for you I had another look at my ‘Prim’ and I’ve changed my mind - it’s not a bad stove.

    It’s true that the pump is short, small bore and has an O-ring rather than a leather cup washer that I prefer ...

    56F5192F-5E92-4D5C-B120-B38EDC6F9FC5.jpeg

    ... but it works well enough, with no miss-strokes and the fuel tank’s small, so there’s not a lot of air space to pressurise.

    The burner’s robust, well made and the outer cap has a hole pattern guaranteed to produce a flame pattern different from what’s usual for a silent burner.

    5C398B28-4F24-44E5-A0E9-A9DB6CBCFFBF.jpeg

    BEC40D23-7468-471C-9ECE-508D4DE53A3C.jpeg


    The priming cup is a bit flimsy though, made of aluminium and the burner has to be screwed down quite hard onto it or the priming charge dribbles through the joint.

    8572215E-827B-47BF-A202-036867BC00B1.jpeg

    No big deal with alcohol, but if the gasoline from the tank were used and the burner not screwed down hard enough to seal the burner to priming cup joint there could be quite a burn-up of the stove box interior, or spreading outside of it because there’s a drainage (?) hole in the stove base.

    4F7FC4CB-141E-4206-8CC7-130C4A479213.jpeg


    First time I had the stove out of the box I don’t think I took account of the fact that the outer cap has three ramped securing lugs that tighten the cap down on three projections inside the burner bell when the cap’s turned anti-clockwise. I’d located the cap cut-outs in the bottom rim over the projections in the bell but hadn’t twisted the cap anti-clockwise much. That messed up the flame pattern, with vaporised fuel igniting at the gap I’d created.

    596865D3-A835-4FFB-9F7B-069EC736A81F.jpeg


    The only real criticism I have is that the ‘Prim’ hasn’t really got a simmer setting. This is the best I could get and it was tricky to dial in on the control knob.

    2C81D466-9EC8-4666-AF66-B91A2223D889.jpeg


    What I didn’t do was to try a lower fuel pressure. Even if that works it’s not a very practical work-around on a gasoline stove, since releasing air pressure (and highly flammable fuel vapour) to achieve that with the burner already lit would be dangerous.

    Ok, no simmer setting, but full-on it’s a powerful stove in a relatively compact package.

    CB0DE21F-65E4-4F44-B8A4-7EB689404001.jpeg


    My apologies Gieorgi for hijacking ‘your’ Prim stove thread with talk of mine but I thought it might be helpful to have that information when you come to fire yours up. Especially that potential safety issue with the priming cup to burner seal.

    John
     
  18. snwcmpr

    snwcmpr Subscriber

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    Very interesting stove.
    In the following photo....
    Is that to prevent fuel leak if the NRV fails?
    [​IMG]
     
  19. gieorgijewski

    gieorgijewski Subscriber

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    definitly no
    two function
    1 mounting pump cap
    2 lock pump rod in the tank
    thats all
    ......................
    later more...
     
  20. gieorgijewski

    gieorgijewski Subscriber

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    My impression:
    Thats spirit cup capacity was for shmell
    here "We have extra" cleaning parts and horisontal fuel pipes with massive mountings
    it is big thermal mass (and improper heating point)
    ---------------------
    Collectors impression from today:
    Steel tank stoves are not designed for long storage with fuel, especially "horisontal fuel transport" versions...