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Optimus 9 stress-cracked tank repair - the story so far

Discussion in 'Fettlers Master Class' started by presscall, Jun 25, 2016.

  1. shagratork

    shagratork United Kingdom Moderator Subscriber

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  2. Normo

    Normo Australia Subscriber

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    I ...am ...impressed.

    I look forward to future progress.
     
  3. Funfundfunfzig

    Funfundfunfzig Australia Subscriber

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    Roger that @Rickybob! Yes! I always get them confused! Apollo 11 was the one with Neil Armstrong, Buzz Lightyear and Phil Collins...I was thinking of the one with Tom Hanks, Bill Paxton and Kevin Bacon! Wilson!!!
     
  4. Metropolitantrout

    Metropolitantrout United States Subscriber

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    Looking good John and thanks for accommodating my request! :thumbup:
    You make it look easy. :clap: Jerry
     
  5. Big Si

    Big Si Subscriber

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    Nice work John, expected nothing less though!

    Si
     
  6. Doug L

    Doug L United States Subscriber

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    John your amazing. You should have your own television show on the BBC (Fettle Network). Wish I had half your talent.
     
  7. presscall

    presscall United Kingdom Subscriber

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    @Doug L
    Well, the repair is pressure proof. I fitted the burner from an Optimus 111B to enable the tank to be pressurised and dunked in a bucket of water.

    image.jpeg


    I ended up putting two more countersunk screws in-between the centre and end fixings. I ground down the excess of the set screw heads and cut a groove along the line of the crack and into the brass splint beneath to provide a key for the solder.

    image.jpeg


    Alas, a skim of solder to produce a flush just didn't seal the repair and I'd no option but to leave a bead of solder proud of the surface.

    image.jpeg


    So, job done insofar as the stove will be functional and the repair is underneath the tank so won't be visible when the stove is in use. A strong repair too, but I could have wished for a neater outcome. I suppose it adds to the 'provenance' of the stove if you file this documented repair process with it!

    Let me have your thoughts Doug.

    John
     
    Last edited: Aug 6, 2016
  8. teckguy_58

    teckguy_58 United States Subscriber

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    @presscall

    Hi John,

    That is one fine repair job. Well done, John and bravo on your ingenuity with this repair.:clap::thumbup::thumbup::thumbup::thumbup:

    Cheers,
    Norman
     
  9. Doug L

    Doug L United States Subscriber

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    John great work! I can't thank you enough.
    I am anxious to fit it up with the burner and try it out.
     
  10. ArchMc

    ArchMc United States Subscriber

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    Superb repair, and you needn't feel bad about the bead of solder. The repair is a proud part of the provenance of the stove, regardless.

    ....Arch
     
  11. snwcmpr United States

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    A master fettler.
     
  12. Doug L

    Doug L United States Subscriber

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    I agree guy's.
    John should be knighted for this as Sir John Master fettler
     
  13. Doug L

    Doug L United States Subscriber

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    Ok I just got off the phone with the Queen.
    Here is how it will go down.
    final3.jpg
     
  14. shueilung.2008 Uruguay

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  15. Rickybob United Kingdom

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    Bravo Maestro!
    you have excelled yourself!
    you have the vision, the smarts and the technical chops to get this done so your reputation is now cast in stone
    you might rest a while upon your laurence, but more challenges await you
    challenges to test your remarkable skills!
    you will astound us all again, i know it

    and i happen to think that it is a very tidy solder fillet and much more satisfactory than any 'invisible repair' could ever be
    a testament to your efforts!
     
  16. shagratork

    shagratork United Kingdom Moderator Subscriber

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    Stunning work by a Master Fettler :clap::clap::clap:
     
  17. Spiritburner

    Spiritburner United Kingdom Admin Subscriber

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    Amazing job. I shudder to think of the mess that stove would be in if I tried to do that!
     
  18. Funfundfunfzig

    Funfundfunfzig Australia Subscriber

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    Sir John the Stove Sur-geon!
     
  19. presscall

    presscall United Kingdom Subscriber

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    Thanks all!

    It took longer to complete than I could have wished but the rarity and value of the stove prompted me to proceed with caution and to work on it only when I'd no distractions or was not chilling out after a day's work.

    Posting progress 'live' and not retrospectively with the job already done was a decision I'm glad I chose. It provided the incentive to get it done - eventually! - and I valued your comments and suggestions along the way.

    Speaking of those suggestions, that to 'remove the end caps' and replace the cracked tank with a new cylinder subsequently to nickel plate made me ponder but rule out. There's just one end cap and the tank is a deep-drawn fabrication with a domed end and waisted shape at the pump end. Reproducing that distinctive tank would have required one-off tooling and would have entailed prohibitive expense.

    Cheers,

    John
     
  20. Billyboy

    Billyboy Canada Subscriber

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    Well done, John. Unreal.
    Now a flame shot?