Optimus 111 and 111B

Discussion in 'Stove Forum' started by Nickyboy, Jan 22, 2023.

  1. Nickyboy

    Nickyboy United Kingdom Subscriber

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    Morning all,
    So, just trying to sort out this 111 business.i picked up a couple yesterday whose boxes say 111 and 111B but they are both identical inside. I've run both on paraffin and they sparked up lovely. But the 111B is only supposed to be a petrol stove or so I thought. Any info and poss dates appreciated. Happy sunday thx. 20230121_211944.jpg 20230122_112927.jpg 20230121_211916.jpg 20230121_212007.jpg 20230122_114013.jpg 20230122_114030.jpg 20230122_114057.jpg 20230122_105537.jpg 20230121_211837.jpg 20230122_114133.jpg 20230121_211842.jpg 20230122_114146.jpg 20230122_112921.jpg
     
  2. Ray123

    Ray123 Subscriber

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    Looks like you have nice older units with the slotted srv, thin control knob and embossed cases.
    The difference between burners is the 111B has 2 burner tubes while the 111 has 4.
    The burner you've shown in the close up is a 111B.

    As for age I can't say. I just like to light them up.
     
  3. snwcmpr

    snwcmpr SotM Winner Subscriber

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    [​IMG]
    4 tubes ... 111.
    Is the other the same?
     
  4. hikerduane

    hikerduane Subscriber

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    Looks like to me, both the same.
    Duane
     
  5. Ray123

    Ray123 Subscriber

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    Did I get the picture wrong? I’m viewing from my phone. Sorry
     
  6. Nickyboy

    Nickyboy United Kingdom Subscriber

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    @hikerduane, @snwcmpr, @Ray123 yes they are both the same and I see there are four tubes but 1 is a chute for primer spirit and the other seems to be from the regulator so I thought there are only two 'true' tubes there. They fired incredibly well with paraffin so it'll do me but alas, I bought them as an add on to a lot of lanterns and tbh I see them as immediate move alongs!!!! I have to thin out but keep buying! Can anyone explain the 'pull' of paraffin/ oil/ pressure appliances???? I'm 50, am not revisiting childhood nostalgia but the hold that this stuff has on me is almost supernatural!!!! I just cant leave it alone......
     
  7. Lennart F

    Lennart F Sweden Subscriber

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    The easy way to distinguish a regular 111 from 111B - and 22/22B.
    206b burner only works with white gas while the 206 burner is made for kerosene/paraffin and works fine with white gas/CF too.

    op111-111bs-mod2.jpg
     
  8. snwcmpr

    snwcmpr SotM Winner Subscriber

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  9. hikerduane

    hikerduane Subscriber

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    All part of learning, whether intentional or otherwise.
    Duane
     
  10. ajvuik

    ajvuik Subscriber

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    I think what @Ray123 is referring at is that you also have 111b's with 2 tubes:
    IMG_20230122_183304_HDR.jpg
    IMG_20230122_183321_HDR.jpg

    With this burner it's just 1 tube that is 'functional'. The 2nd one is for pouring alcohol into the preheat dish.
    I won't dare using heavy fuels in this one, because I think it can only sustain the vaporisation of petrol/naphtha type of fuels.

    *Edit*

    I'm to slow on my phone ](*,)
     

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    Last edited: Jan 22, 2023
  11. Nickyboy

    Nickyboy United Kingdom Subscriber

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    Great input from all with thanks. I seem to have a couple of 111 stoves, regardless of what one says on the tin!!!!
     
  12. hikerduane

    hikerduane Subscriber

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    A few years ago I mentioned to a online label seller that there was a mistake on one of their 111B labels as it had gasoline and kerosene on it and another just had kerosene. He knows more than us maybe as he said some 111B's used both fuels.
    Duane
     
  13. snwcmpr

    snwcmpr SotM Winner Subscriber

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    The best, good for you.
     
  14. afoton

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    111 has 2 tubes upwards, one tube downwards (to the spindle and jet), and one tube for primer spirit.
    111B has one tube for primer spirit. The other one is just for holding to flame spreader. The gasoline does not go over the flame, and that is the reason it will not work with kerosene.
     
  15. Delphicstove United States

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    Despite all of the comments that the 111b cannot run on kerosene I had to try for myself. I received a beat up 111b on Monday. Tuesday I brazed the damaged flame spreader support, refurbished/painted the box, replaced all of the seals. On a test fire the pump started to rise and inspection showed that the pip and tank cap seal were as hard as the plastic control knob handle. With all seals replaced it now works fine.
    I just had to try it with kerosene so I drained the white gas, filled it with kerosene, the same red dyed bulk stuff I use in my Dietz lanterns. I had no idea what to expect. I primed it as usual fired it up and it burns ALMOST normal. Flame tips a bit orange so not as clean a burn as petrol but perfectly usable. I made a pot of coffee and kept the stove running just to watch it. Over half an hour and it's going strong as I sip the coffee and write this. The orange flame tips may bother some but it looks as though it's burning as cleanly as my Indian roarer burner stoves. I think kerosene will be my fuel of choice for this stove and spare myself any NRV anxiety. This in a stove allegedly unable to burn kerosene. Is there anything I'm doing wrong ? Comments ?
     
    Last edited: May 11, 2023
  16. Delphicstove United States

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    Just to be clear, the burner is a true 111b with 2 vertical tubes, one with a hole in it. It hasn't been changed with another burner at some point.
     
  17. Lennart F

    Lennart F Sweden Subscriber

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    It is not intended for kerosene and it is optimized for petrol - but if it is hot enough it will work with good camping kerosene - I think you would find it a bit unwilling to burn a heavy grade kerosene amidst a serious snowstorm.

    I have seen some videos of indian kero stoves - they are not very perfectly tuned, they just put enough heat under the pan.
     
  18. Delphicstove United States

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    It's certainly not intended for kerosene but it works well enough on it for me. The kerosene I used was not intended as stove fuel, was sold in bulk for agricultural use in farm equipment. Since I'm not taking it out into a blizzard I think it will be alright for my intended use which is on a small sailboat. Not to be used while underway so gimbals are unnecessary. For petrol stoves with a pump,I guess I still prefer my Coleman 502. I'm undecided about petrol in a 111b regardless of it being the intended fuel. Seeing the pump begin to rise with petrol in the tank is something I don't want to experience again. It happened once testing an old kerosene stove and that was merely messy and inconvenient. With the new NRV that it has I shouldn't have to be concerned but I still am. Perhaps petrol and Optimus pumps are not for everyone.