Matt's 722 gets a seeing too

Discussion in 'Fettling Forum' started by loco7stove, Feb 16, 2013.

  1. loco7stove

    loco7stove Subscriber

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    Hi All

    If you remember Matt's 722 furnace 8) :thumbup: post you'll remember he got it from the Dorset Steam Fair and was going to try to get it fired up......

    https://www.google.com/url?q=http://www.cl

    Well, Matt was having a bit of trouble with the beast so I duly volunteered to have a look :D

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    The NRV was giving him some problems as it had been chewed before he acquired it, :doh: :roll: ](*,) so I started on the old lead solder repair first :D :thumbup:

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    About an ounce and a half of lead came off when blasted with the torch. :shock: :roll: The pump was pulled clear with one of my removal tools :D :thumbup: giving me better access to the damaged NRV. This is what lurked beneath and I had to remove the end of the pump tube as well :shock: :roll:

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    Well, the end of the NRV is well chewed, but not to worry, "I have a cunning plan". 8) :thumbup: The NRV was placed in the lathe and cleaned up. Then a suitable bit of brass was found to make a new end which was silver soldered into position and hand filed back to its original size :D :thumbup:

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    The tube was cleaned up and the cap resoldered into position :D :thumbup: and the parts ready to be replaced in the furnace fount (repaired NRV on the right) :doh: :D :thumbup:

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    The tube hole was too large and I had to shrink it back with a peening hammer until the pump had a snug fit ready to be re-soldered without the lead lump. I'll do that this evening :D :thumbup:

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    The bottom rim has also been straightened up as well :D :thumbup:

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    Well, Matt, how's that so far :?: :D :thumbup:

    Best regards Stu :D :thumbup:
     
    Last edited by a moderator: Jul 1, 2015
  2. mr optimus

    mr optimus Subscriber

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    Hi Stu great work so far, and brilliant repair job saving the original NRV.
    I am looking forward to seeing 722 finished and working
     
  3. Matthew92

    Matthew92 SotM Winner Subscriber

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    Excellent work Stu, It looks miles better already. Also appears to be well beyond my capabilities, so sending it to the doctor was clearly the right way to go. :lol: Fantastic bit of work on the NRV end as well I would never have thought it possible to save that so yes, I'm very impressed. Not that I ever had any doubts. :D I take it you found the burner in the box, so when it's ready I look forward to seeing her go. Feel free to make yourself a well earned cup of tea on it to. :thumbup: :thumbup: :thumbup: Thanks again Stu, best regards Matt.
     
  4. loco7stove

    loco7stove Subscriber

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    Hi All

    Back in from the workshop and the pump is now re-soldered where it should be. :shock: It's working just as it was designed to :D :thumbup:

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    Next job was to find a bit of tube to fire up the burner and all I had was a bit of scaffold tube which I machined out to fit the large burner head. It really needs a 2 3/4 inch long 2 inch o.d. tube but this was all I had. :doh: :D :thumbup: I'll get a bit cut for Matt before I return the furnace on Monday :D :thumbup:

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    So The big moment looms large and after quenching the burner first to clear any loose crud, the 722 was assembled, fueled and primed. [-o< :D :thumbup:

    1361053286-DSCF3758_opt.jpg

    There was a bright green flame at first until it settled down leaving a nice blue one instead. The tube worked quite well on the burner but the longer one would be much better giving a more even burn :D :thumbup:

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    I wonder what the person who you got the 722 from would say now Matt, :-k , but I just hope you're pleased. 8) :D :thumbup:

    Best regards, Stu :D :thumbup:
     
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  5. Matthew92

    Matthew92 SotM Winner Subscriber

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    Wow, that looks, errr.... Hot? :lol: Great to see her working again, I wonder when the last time was :?: not for some time I bet. Just the priming flame is big, it's not just my eyes is it? the flame reaches right up into the corner of the picture. :shock: I can't wait to fire it up, I bet it was loud in your shed. :lol: A nice flame tube too.

    Really pleased Stu, I couldn't have tackled this myself so a huge thanks to you for doing it. Perhaps one day it will make you a cup of tea, but until then it will make me a few. :lol: Thanks again Stu and I hope everyone else enjoys your pics and I'm sure I'll be adding some more once it get back home. Hey, I might even get a picture worthy of the flame shots gallery. :lol: Best regards Matt.
     
  6. loco7stove

    loco7stove Subscriber

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    Hi Matt

    No doubt your flame shots will grace that post soon 8) :thumbup: , just glad to have been of help in the restoration :D :thumbup:

    Stu :D :thumbup:
     
  7. yonadav

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    Hi Stu,

    Brilliant work, as usual!

    I just don't understand how you keep the stove from falling off when the table is tilted 45 degrees :lol:

    Yonadav
     
  8. Matthew92

    Matthew92 SotM Winner Subscriber

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    Yonadav, It's the thrust from that burner. It would stick to the roof if you tried. :lol:
     
  9. mr optimus

    mr optimus Subscriber

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    Hi Stu brilliant, the pump tube has been soldered back perfectly, and looks so much nicer with a proper neat solder ring around the joint, instead of a thick layer of solder smeared around the joint with a over sized soldering iron.
    And also a great job of machining a new flame tube from a piece of scaffold tube, it looks so original and no made up ,well done there Stu :clap: :clap: :clap: :clap: :clap:
     
  10. loco7stove

    loco7stove Subscriber

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    Thanks guys 8) :thumbup:

    Always glad to help when I can. :D :thumbup: Yonadav have you never seen the Batman series starring Adam West from the 60s? My workshop is an old villain's hideout :doh: :D :thumbup:

    See what I mean :shock: :D :thumbup:

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    Stu :D :thumbup:
     
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  11. CWilkins

    CWilkins Subscriber

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    Damm fine fettle. Nuff said !
     
  12. idahostoveguy

    idahostoveguy R.I.P.

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    Excellent work on the NRV. The 722 is ready for takeoff! Ready to take out the next asteroid/meteorite!

    sam
     
  13. Chef BC

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    I'd say that 722 is ready for the next crab boil!
     
  14. presscall

    presscall United Kingdom SotM Winner SotY Winner Subscriber

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    I wonder if the restoration runs to getting a pair of those foldable carrying handles back on the furnace Stu?

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    If you are, knock me out a couple of pairs too would you? - just the steel rod and not the brass bracket. I've not got around to making any up for the Primus or the older Svea featured in this post - I can send you a pattern and photos from another Primus if you've not got one handy. Better still, I'll de-solder a pair and send them to you.

    Primus 702

    Probably would've been best as a PT - sorry!

    John
     
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  15. loco7stove

    loco7stove Subscriber

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    Hi John

    No it's good to see another similar furnace & if you send me a pattern I'll knock some up for you :D :thumbup:

    Just back from a local garage where I got some two inch pipe, two & three quarter inches long to get Matt started. This should give a much better burn than the short bit of pipe I had :D :thumbup:

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    Looking forward to seeing this fired up with the new tube, but thats for Matt to do 8) :thumbup:

    Furnace on its way back to you today :D :thumbup:

    Best regards Stu :D :thumbup:
     
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  16. Pinky

    Pinky Subscriber

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    WOW!!!

    Great job Stu, particularly with repairing and cleaning up that NRV head! :thumbup: :clap:
     
  17. nmp

    nmp United Kingdom SotM Winner Subscriber

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    Stu
    The burner tube you used in your flame shot was 50mm is that right? Were the originals 75mm? Iani sent me a 55mm piece of tube and that seems pretty good would 75mm really make a better flame pattern? I look forward to seeing new flame shots for comparison.75mm may be too long to fit into the London furnace I have.
    Cheers Nick
     
  18. Wim

    Wim Subscriber

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    I may be wrong, but I don't think the tube needs to be any longer than the burner (flush with the top, maybe 1/4" extra). Here's a job for Matt, to thoroughly and scientifically test both tubes as soon as he gets his 722 back! :D/ :lol: ;)

    Best regards,

    Wim
     
  19. Matthew92

    Matthew92 SotM Winner Subscriber

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    Does a scientific test involve holding my hand above the stove running at full tilt at a predetermined height and timing how long I can hold it there before swearing profusely and running around? :-k
     
  20. snwcmpr

    snwcmpr SotM Winner Subscriber

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    Really nice work, Stu.
    Matt ...... More pictures please.

    Ken in NC