optimus thread

Discussion in 'Fettling Forum' started by phildy, Feb 19, 2009.

  1. phildy

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    I have an optimus 207 adjustable burner [fitted on a marine stove] with a munted base thread. Does anybody know of way to effect a repair? Could it be rebraised and rethreaded with a dye.The thread itself is quite fine and I doubt I will have much luck finding a commercially available dye. Seems a pit to throw away an otherwise good burner.Any iieas?
     
  2. tritonofnor

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    Have had the same problem on my Taylors cooker in the past.. Managed to effect a temporary fix by removing the spirit cup and fibre washer, exposing a bit of decent thread. Used a Tilley lamp type lighting torch until I could source a new burner.

    They're now in very short supply, although they do have them at Stuga Cabana (see the links page) They ain't cheap either!

    It might just be possible to effect a repair with an epoxy like "JB weld" which will take fairly high temperatures, But be VERY CAREFUL to do an extended pressure test before lighting. The sight of a jet of burning paraffin shooting across your boat is not one you want to see (Just don't ask me how I know! :oops: :oops: :oops: :oops: )
     
  3. Grigoriy

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    Hi
    Its very hard to get in to you problem 1)with out photos
    2) without dimensions

    mesure the threat
    diameter and tape.
    for outer thread you need trammel and pen with list of paper.
     
  4. phildy

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    Thanks for the suggestion about JB weld. It may give me sufficient buildup that would enable the nut to grab and act as a dye. Certainly worth a try. Am informed that chances of finding a propper dye are approx zero
     
  5. Grigoriy

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    at list silver soldering, not epoxy "welding"

    but i dont see the problem in making new thread
     
  6. phildy

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    Thanks Gregoriy, just tell exactly how I go about making a new thread without a dye, which everone tells me I will never find. Any creative suggestions gratefully accepted
     
  7. Grigoriy

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    from your side the great creative act is to show device and mesure it.

    In some cases you can easely rethreat both details with common thread very simmilar to original one.

    I dont know how it is in NZ, but I can easely buy any metric dye not far from home. Inch threat is a little bit compicated but also solverable problem.

    I dont thing that it is something unique in your case.
     
  8. dspearsy2k United States

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    The thread is 14mm-.8 is going to be propriatary or use in compression fitings. Try theading ID. of burner to 1/8" tapered pipe than adappapting stove tubing to accept flare fittings. the hard part is going to be holding the spirit-cup up to correct position.
     
  9. Ian

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    If you're not too bothered about looks, you can use a Tilley-type priming torch for priming the bnr and dispense with the spirit cup. There is a type that springs open and shut like a pair of jaws; these clamp quite nicely onto the base of the bnr. I use one on the French thing which doesn't have a spirit cup fitted.
     
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