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Electrocuted Ditmar Maximette 581

Discussion in 'Fettling Forum' started by Martin K., May 12, 2016.

  1. Martin K.

    Martin K. Germany Subscriber

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  2. JEFF JOHNSON

    JEFF JOHNSON United Kingdom Subscriber

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    Well fettled! :thumbup:
     
  3. WimVe

    WimVe Germany Subscriber

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    Nice job !
     
  4. Martin K.

    Martin K. Germany Subscriber

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    ...even nicer now that it is complete,
    I also found the reason why it was not working properly. Still there were some leakages at the jet and the vaporizer seal. Now that it's fixed it runs properly on Aspen4.
    1463330572-05150001a.jpg 1463330593-05150002a.jpg 1463330612-05150003a.jpg 1463330624-05150004a.jpg 1463330634-05150005a.jpg

    It can hardly be seen that it has a "homebrew vaporizer" and uses a today's Chinese inner chimney, burner, jet and needle (Petromax 150HK type). Now it would even be possible to use it as a "workhorse" because the critical spares (jet & needle) are easy to get and replace.

    For those who wish to reproduce the vaporizer here's a small drawing of it:
    1463331288-Vergaser.png
     

    Attached Files:

  5. Pod Bros

    Pod Bros United Kingdom Subscriber

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    ...Top Fettle !!!.. :) .. :clap:

    Great pictures Martin...

    Regards,

    PB.
     
  6. ROBBO55

    ROBBO55 Australia Subscriber

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    A good project with excellent results. Congratulations :clap: :clap:
     
  7. John United States

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    Congratulations on getting it burning again, home brew or not the vaporizer does the trick.
     
  8. expat

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    Nice work!
     
  9. Kit Hong Kong

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    Hi, Could you make a vaporizer for me? I would pay the fee. Thank you.
     
  10. Martin K.

    Martin K. Germany Subscriber

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    Yes, I plan to order another one for a small incomplete Ditmar that I've acquired recently. But that will take a few months (possibly mid summer) until I come to this project.
    If you would still be interested in it please PM me your mail and address.
     
  11. Kit Hong Kong

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    And how to install the hk150 needle in the vaporizer?

    use the petromax hk150 carburettor rod? This one could fit the ditmar 581?
    Carburettor Rod HK150 - Petromax

    Thank you!
     
  12. Martin K.

    Martin K. Germany Subscriber

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    The rod has to be adapted DIY, but that is not a big issue.
    You can't use the the middle and lower piece of the HK150 rod and have to cut the upper piece to the correct length. Following you need to tap a small thread at its lower end which will fit the (hopefully still existing) excenter piece of the Ditmar lantern. Unfortunately I don't remember the thread size exactly any more, but it should be something around M2.0.
     
  13. JEFF JOHNSON

    JEFF JOHNSON United Kingdom Subscriber

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    Well saved!:thumbup::clap::clap::thumbup:
     
  14. Kit Hong Kong

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    Can I just tap the thread of HK150 jet which fit the original vaporizer?

    And replace the HK150 upper rod and needle on the ditmar 581.

    Is it work?
     
  15. WimVe

    WimVe Germany Subscriber

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    Off coarse you can but nobody knows your skills.
    Also you only have one change to make or break the original vaporizer.
     
  16. Martin K.

    Martin K. Germany Subscriber

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    I personally would not recommend to do that. The original thread is smaller and there may not be enough material left for the M7x1 HK150 jet thread...
    And there's another drawback: with the HK150 Jet it will only run on petrol/white gas, since the design is not adapted for the larger jet orifice diameter.
     
  17. Kit Hong Kong

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    I have PM to you, thank you
     
  18. Kit Hong Kong

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    I bidded this one today. Hop this one is working.

    WhatsApp Image 2018-02-23 at 02.09.08.jpeg
     
  19. scl

    scl United States Subscriber

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    great one.
     
  20. Martin K.

    Martin K. Germany Subscriber

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    ...lots of money for such a little lantern.
    Looks like it's in a good shape though. Goog luck at fettling!
     
  21. Kit Hong Kong

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    I like this lantern small size similar to coleman 222. It is a lovely and rare lantern.
     
  22. Kit Hong Kong

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    Hi, is the 523 vaporizer's thread same as 581? I may get a 523 and 593. I am not sure whether these vaporizer's thread same as 581.
     
  23. Martin K.

    Martin K. Germany Subscriber

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    All of these small lanterns use the same thread at the bottom. However, they use different vaporizers for petrol and paraffin. And there were even different versions for the petrol vaporizers and jets over time.
     
  24. Kit Hong Kong

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    Can I replace the DIY 581 vaporizers in the 523 and 593 because I cannot find the new jet and needle
     
  25. Martin K.

    Martin K. Germany Subscriber

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    Yes.
    However, if the original inner chimneys are still present it could be necessary to enlarge the hole where the jet is sticking through. And the new PX 150HK jets would only allow to burn petrol/gasoline/Coleman fuel (not paraffin/kerosene) because of the larger size of the orifice.
     
  26. Kit Hong Kong

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    So if I replace the original parts with the DIY vaporizers, 150HK DIY rod, 150HK jet and 150HK needle, 523 and 593 are also working as well as 581? thank you.
     
  27. Kit Hong Kong

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    how can I take out the valve and the rod? thank you

    9348881F-A245-4971-A102-39AFF18B0B76.jpeg C72230A5-5723-4049-A584-9B56D68A9E68.jpeg
     
  28. nep036 Italy

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    Hi Kit, you should extract the graphite gasket from the valve, try with some heat and also try with some pliers... it will probably break, so you should replace it afterward. Once removed you will be able to extract the valve shaft and rod.
     
  29. Kit Hong Kong

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    I extract the graphite gasket from the valve, then how should I do the next step? thank you

    image.jpg
     
  30. nep036 Italy

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    Now you should unscrew the needle rod and then the valve should come off... do everything gently.
     

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