Burner nozzle shortage.

Discussion in 'Fettling Forum' started by Peter, Mar 23, 2019.

  1. Peter

    Peter Aland Islands Subscriber

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    Hi!
    One of my lanterns ceramic burner nozzle is not what it should be. In fact it’s in small little pieces... and as I understand it the nozzles to the 200cp Pmax lanterns are almost impossible to find. At least I haven’t been able to find any...
    So, would it work with a stainless steel one if I’ll have one machined out?

    /Peter
     
  2. MYN

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    Yes, you can machine out a piece from stainless steel.
    Do you still have all the pieces of the original 200cp ceramic burner?
     
  3. phaedrus42

    phaedrus42 Subscriber

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    You can still buy a complete inner hood with ceramic burner cap from fogas.se and there are 250cp alumina nozzles available from Korea on ebay. Not cheap, though.
     
  4. Peter

    Peter Aland Islands Subscriber

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    Nope. No pieces left I’m afraid. But I have a nozzle on one of my other lanterns to use as a template. So no issues with using stainless steel then? Swelling/shrinking..
     
  5. phaedrus42

    phaedrus42 Subscriber

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    The nozzle will spend many hours glowing yellow hot. If it is made of metal, a lot of the heat will be conducted to the mixing tube. Not sure that is the optimal situation.
     
  6. Peter

    Peter Aland Islands Subscriber

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  7. phaedrus42

    phaedrus42 Subscriber

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    Could you rather make a mixing chamber or adapter to convert to a 350-500cp nozzle? These are common and cheaper. Alternatively a Coleman style brass+mesh cap.
     
  8. Peter

    Peter Aland Islands Subscriber

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    Adapter? Tell me more! To be honest I don’t really know what differs the 200 nozz from the 300s...:oops:
     
  9. phaedrus42

    phaedrus42 Subscriber

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    Just the size and thread size.
     
  10. Peter

    Peter Aland Islands Subscriber

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    Ok. So if I get the threads right I could use a 300 nozzle?
     
  11. paul m

    paul m Subscriber

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    What's the diameter of the thread you screw into lamp...
     
  12. Peter

    Peter Aland Islands Subscriber

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    @paul m
    I don’t know really....I could measure the nozzle I got in my other lantern when I get back home.
     
  13. paul m

    paul m Subscriber

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    I've a load with the thread size about .700"
     
  14. Peter

    Peter Aland Islands Subscriber

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    Oh! I’ll measure and get back to you @paul m
     
  15. MYN

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    If making one out of stainless steel is easy for you, trying that out wouldn't do much harm till you could find a spare. Would be rather tedious to drill all the tiny burner holes uniformly.
    Coeffient of expansion differs from the brass mixing chamber but you could use some copper antiseize to prevent the burner loosening or dropping off.
    Not too certain if the thread size for the 200/250cp is 5/8" BSP, but close to that at least.
     
    Last edited: Mar 23, 2019
  16. ROBBO55

    ROBBO55 Subscriber

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  17. Peter

    Peter Aland Islands Subscriber

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  18. Peter

    Peter Aland Islands Subscriber

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    Ended up ordering a couple of nozzles from Korea...looks solid.
    Will try to fire up my mysterious lantern this weekend!

    FEBDF43A-44CF-45EE-9416-BE136AE215C7.jpeg
    D6C7F30C-C8CC-4E5F-A41C-1B0F6E1E7E92.jpeg
     
  19. MYN

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    Yeah, those are hard, white alumina burner nozzles. Does the thread fit in?
     
  20. Peter

    Peter Aland Islands Subscriber

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    @MYN
    Yes threads fitted nicely. Just had her lit up, needs some fine tuning still though, nozzle works like a charm!
     
  21. eiremax

    eiremax Subscriber

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    Your "mysterious" lantern looks to be an Optimus. A nicely proportioned lantern, as mentioned previously Fogas carry innumerable parts for these.
     
  22. Peter

    Peter Aland Islands Subscriber

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    @eiremax
    Yes, it sure looks like an Optimus. No inskriptions, stamps or anything on it though.
    Fogas are great, ordered quite a bit from them already. Unfortunately they didn’t have the nozzle so I had to get a couple from Korea (eBay)...
     
  23. MYN

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    What's the thread size on the 250cp burner nozzles? Is it anything like 5/8"BSP?
     
  24. Peter

    Peter Aland Islands Subscriber

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    @MYN
    Outside diameter of the nozzle threads is ~21mm if I remember correctly. Sorry to say I have no idea about the pitch of the threads.
    /peter
     
  25. Henry Plews

    Henry Plews Subscriber

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    According to my thread gauge, the pitch is 14G i.e. 7/16 BSP.

    Henry.
     
  26. MYN

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    7/16"BSP does not sound like a common size. Not a standard British Standard Pipe size?
     
  27. Henry Plews

    Henry Plews Subscriber

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