Optimus No: 99

Discussion in 'Optimus No:99' started by Simes, Nov 30, 2019.

  1. Simes

    Simes Subscriber

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    My sadly unfettled 99, it works after a fashion with a bit of persuation.

    WP_20191130_15_54_51_Pro.jpg

    It actually arrived with a mini pump bit no pot gripper.

    WP_20191130_15_56_14_Pro.jpg

    It does need a little effort to get going, both pumping up and a generous prime.

    WP_20191130_16_01_35_Pro.jpg

    WP_20191130_16_02_22_Pro.jpg

    Here showing for a tea test.

    WP_20191130_16_06_17_Pro.jpg

    Flame lopsided and it pulses at about 1 beat a second. It certainly needs a complete rebuild at some point.

    WP_20191130_16_06_17_Pro.jpg

    WP_20191130_16_09_49_Pro.jpg

    Since the last time I used it it seems to work a little better, if pump gas has been used the wick may have cleaned up a little with being soaked in naptha for the time it's been sat on the naughty shelf.
     

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  2. Harder D. Soerensen

    Harder D. Soerensen Denmark Subscriber

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    Great little stove.
    Regarding pumping I learned that the NRV part in the filling lid can be a challenge to get to operate properly if the spring hardens up or the pipholder gets a bit stuck
     
  3. Simes

    Simes Subscriber

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  4. JP2

    JP2 Subscriber

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    Lol, WHY can you fixed a 99 and not a 8r. ???????
     
  5. SveaSizzler

    SveaSizzler United States Subscriber

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    I haven't fettled my 99 either. It runs hot and drips gas from the stuffing box occasionally. The key is also a bit stiff. I have the parts lined up. Just lazy, or work keeps getting in my way.
     
  6. snwcmpr

    snwcmpr Subscriber

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    Do not use a liquid or paste type lubricant on the pump. It will gum up the works. Just graphite powder.You will find it as a lock lubricant.

    Full fettle of this is usually just a filler cap seal and a pip. Easy Peasy. Rarely, the wick.

    You are also missing the windscreen.
     
  7. Simes

    Simes Subscriber

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    @JP2, it's running as I received it, just not very well, I'm trying to find the same time that @SveaSizzler is to give it a closer look.

    The 8rs refused to run at all iirc and due to age and conditiin I've decided a complete strip down is the best option. If I'm going to do the job the least I can do is the best I can.

    Ken I can't think what else is causing the slow pulsing other than the wick, it maintains pressure and the 'full' on the cycle is good???
     
  8. snwcmpr

    snwcmpr Subscriber

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    Ok, I only mentioned that because you said unfettled. Cap and pip are good, leaves only the wick.
    I would run a few tanks of clean fuel, let it get hot, before I chance damaging the pipe, or tank, changing the wick. We read here of those stories.
     
  9. Simes

    Simes Subscriber

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    While I have it out I think I'll take your advice Ken and run it under close supervision, I was tempted after mentioning that it seemed to be running better than I remembered.