Optimus Hiker+ NATO prototype

Discussion in 'Optimus No:111 (all variants) + later Hiker & Hike' started by Staffan Rönn, Aug 11, 2019.

  1. Staffan Rönn

    Staffan Rönn Subscriber

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    This is a modified Optimus Hiker+ that was made for trials in the armed forces of a Nato country some years ago. A quantity of approximately 50 pcs were made. The majority of them were used in the test and evaluations by military personnel. The major difference to the standard Hiker+ were added accessories, jet optimized for jet type of fuel (NATO F-34), small improved details to box and pump rod.

    IMAG8606.jpg IMAG8608.jpg
    Image above shows "specials" like:
    - Clip in lid to hold the control key.
    - Clip in lid to hold a multitool / wrench.
    - Multitool.
    - Fire protective Nomex type of kitchen cloth.

    Detail of clips, control key and multitool.

    IMAG8611.jpg


    These units were also supplied with a filling funnel with gauze:

    IMAG8610.jpg
    IMAG8612.jpg


    Pump rod with old style free floating pump piston:

    IMAG8614.jpg

    Multitool designed to allow full stripping of stove in the field, including changing the NRV:

    IMAG8616.jpg

    Box fitted with more and stronger magnets for more reliable function of the magnetic cleaning needle:

    IMAG8619.jpg

    Burner detail:

    IMAG8621.jpg

    Let's fill it up. There's nothing like the smell of jet fuel on a Sunday afternoon...

    IMAG8622.jpg
    The jet orifice size was reduced to 0,30 mm (from original 0,32 mm) to reduce CO emissions and improve combustion of this pretty crude fuel.

    Ignition! Here's a steady blue flame, although hardly visible in the first shot:

    IMAG8624.jpg




    IMAG8630.jpg
    IMAG8632.jpg

    This version never came into serial production, so it's a rare piece. The Hiker+ (including this trial version) was the last stove model still being made in Sweden. They were manufactured in Gnosjö in the same factory that Optimus used for decades before.
     
  2. Odd

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    That's one cool stove you've got there Staffan!
    /Odd
     
  3. Staffan Rönn

    Staffan Rönn Subscriber

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    Hej @Odd !
    Yes this is a cool stove.

    Or on second thougt not, it's actually hot!! :lol:
     
  4. kerophile

    kerophile United Kingdom Subscriber SotM Winner

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    Hi @Staffan Rönn great photographs of a rare and interesting Optimus stove.
    Thank you for sharing yet another gem with us.

    Best Regards,
    Kerophile.
     
  5. snwcmpr

    snwcmpr Subscriber

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    Thank you for sharing this uncommon stove.
    Hot stuff.
     
  6. JP2

    JP2 Subscriber

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    Interesting
    Thank
     
  7. Tony Press

    Tony Press Australia Subscriber

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    Excellent! :thumbup::thumbup::thumbup:


    Cheers

    Tony
     
  8. ArchMc

    ArchMc Subscriber

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    Nice set of accessories and provision for storing them.

    ....Arch
     
  9. Afterburner

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    Nice kit & interesting information. :thumbup: Unfortunately consumers never get these better models... ](*,)
     
  10. itchy

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    Interesting. Thanks for the info. Good pictures.

    At a minimum, the smaller jet opening would be nice improvements to the civilian Hiker+ (and Nova). Mine runs a little rich on kerosene, although others have not noticed the same. It could probably still be a good dual-fuel stove with that change since there is plenty of heat.

    Also, the newer one I have used split rivets to fasten the cover hinges to the bottom case -- those are real blood-letting knuckle cutters if you try to clean the case. That was a dumb move on someone's part.
     
  11. Retro Camper

    Retro Camper Subscriber

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    Great post Staffan, thanks. Do you know what year the manufacturing ended at Gnosjo?
     
  12. Staffan Rönn

    Staffan Rönn Subscriber

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    Thanks all for nice comments.

    @itchy - regarding jet orifice - I sometimes notice that stoves can burn a little rich on the "heavy" fuels (kerosene, diesel) if you just heat air. Once there is a pan/pot/kettle on top combustion is improved.

    @Retro Camper - the very last batch was manufactured in the fall of 2018, October-ish.
     
  13. itchy

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    @Staffan Rönn

    A pot probably helps, but I still notice a kerosene smell and a bit of carbon on the bottom of my pot with kerosene. Of course, the recommended fuel, according to the sheet that came with my stove, is white gasoline and with that it burns very clean in it.
     
  14. Afterburner

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    @itchy Maybe Amish mix would help with soot & smell? F.ex. 15% gasoline and 85% kerosene would be still almost as safe as kerosene but could burn more clean than pure kerosene.