Early (August 1998) Dragonfly

Discussion in 'MSR - Mountain Safety Research' started by presscall, Feb 19, 2020.

  1. presscall

    presscall United Kingdom SotM Winner SotY Winner Subscriber

    Offline
    Joined:
    Aug 25, 2009
    Messages:
    9,115
    The fuel bottle’s branded Primus, so not original to the outfit, but most likely contemporary.

    1A42A320-B8D7-4B78-800C-DBDA965D489F.jpeg


    A possible prototype Dragonfly on display at an MSR exhibition.

    E8F09C4C-36FB-4A34-88D4-EA57DFAF2580.jpeg


    Connector block and the 08 98 date stamp.

    23FBA8D4-DAAB-438C-82BC-C3ACCDF057A7.jpeg


    The full set of wind shielding and heat deflector.

    F9C1A4F7-0C8F-4875-AFD9-F9EC3951B8B7.jpeg


    In use in this photo fold-out in the publicity booklet that came with the stove.

    752038A1-733A-48BB-8928-8C7F58B21335.jpeg


    Stuff sack.

    BBCC9BD2-3E13-4720-99F6-780C20D0CB80.jpeg

    11C14588-DB2F-4CDC-8A04-46492936A0DF.jpeg


    What’s been described, with some justification, as a pump with known shortfalls. The blue and red pump - ask @Doc Mark and other long-time users of MSR equipment about that one!

    In evidence, plastic pump cap holding tags broken off on both sides. The norm with this pump, sometimes occurring first time in use apparently.

    80472BF2-36C4-4637-A32E-BA6C051A8BD0.jpeg

    0D47472C-8B3F-4E74-8CFF-1E4597505CDA.jpeg


    However, all credit to MSR, for a feature that originated with this original pump, arising out of the Dragonfly’s two shut-off valves, the pump one and the one at the burner (that provides the excellent control of flame output the Dragonfly is renowned for).

    Perhaps learning from their earlier Firefly stove, which also had a valve at the burner and at the (yellow-coloured) stove pump, the Firefly arrangement made it possible to shut the stove down at the burner valve but forget to close the pump valve.

    If pressure had not already been released from the bottle at the cap and the fuel hose connector were then removed from the pump, a stream of fuel under pressure would come out of the pump outlet.

    Except ...

    With the blue and red Dragonfly pump, MSR incorporated what they refer to as a poppet valve. A spring-loaded, rounded valve tip projects slightly into the fuel outlet tube. Depressed by the fuel hose connector tube, fuel flows through the hose. Connector removed, the poppet valve closes, the seal made by that small O-ring seen in the illustration of the valve below.

    458B6CB4-FE30-4945-A9B6-F380AE12EFCB.jpeg


    Tip of valve visible in the fuel outlet tube.

    233A097C-DBC2-4E34-96F7-B4133DA158C5.jpeg


    MRS’s contemporary Duraseal pump for the Dragonfly has a poppet valve safety feature too.

    4B11D8F9-3B1B-47EF-B469-918F1A1C862C.jpeg

    40F2D2F6-1830-48A7-913B-AB87DDE9033A.jpeg


    The paperwork with the stove.

    Instructions. Pump schematic, shows the poppet valve.

    AECA03DF-C74D-4A40-B59F-6BE228B6BCAF.jpeg


    How to set up the wind shield and heat deflector.

    8361DA37-C18A-44D9-B50D-546D3E30B167.jpeg


    The publicity booklet with the stove, bulk of it taken up with text in other languages.

    Front/back. Chewed by a mouse and fuel (fuel I hope) stains.

    BB9ABDE8-4685-4D3B-BABA-6E4A2F8F4ACC.jpeg

    8586E60F-EAF0-4CD0-951D-F32D9A6C0A82.jpeg


    Serendipity I think it’s called. Mouse nibblings and fuel stains combine to suggest the Dragonfly is much loved.

    4C2AFF87-24E9-4B00-A419-034CDB9E9E36.jpeg

    John
     
    Last edited: Feb 19, 2020
  2. hikerduane

    hikerduane Subscriber

    Offline
    Joined:
    Mar 1, 2010
    Messages:
    6,168
    Last night. My go to stove when backpacking and fix spaghetti. Using its yellow pump.
    Duane
    IMG_5928.JPG
    IMG_5929.JPG
     
  3. presscall

    presscall United Kingdom SotM Winner SotY Winner Subscriber

    Offline
    Joined:
    Aug 25, 2009
    Messages:
    9,115
    @hikerduane
    I know, the ‘poppet in the fuel line’ is superfluous if you simply remember to switch off at the bottle first!

    Early MSR fuel bottle I see Duane.

    John
     
  4. hikerduane

    hikerduane Subscriber

    Offline
    Joined:
    Mar 1, 2010
    Messages:
    6,168
    @presscall, that is the 50th Anniversary bottle, white like a much earlier one. @OMC, turned me on to those. I do have the Sigg and MSR labeled bottles in my MSR collection.
    Duane
     
  5. presscall

    presscall United Kingdom SotM Winner SotY Winner Subscriber

    Offline
    Joined:
    Aug 25, 2009
    Messages:
    9,115
  6. anfeng

    anfeng SotM Winner Subscriber

    Offline
    Joined:
    Oct 2, 2016
    Messages:
    120
    In 1998, the msr dragonfly and titanium fuel bottle were released at the same time, and the combination pattern was included in the cover of the early dragonfly's manual. 4162D908-CCB4-47EE-8ED8-2C0B22F59442.jpeg 32F0BA9E-9AF4-4AFE-AA31-DE1B47DFD3FE.jpeg 91FE4A46-190E-4808-9FCC-83E03E75D385.jpeg B8F33E4A-18A7-4F2D-A51A-A881EE1E9D50.jpeg
     
  7. presscall

    presscall United Kingdom SotM Winner SotY Winner Subscriber

    Offline
    Joined:
    Aug 25, 2009
    Messages:
    9,115
    @anfeng
    Thanks for that, outstanding!

    I repaired the ‘blue and red’ pump with broken ‘tags’. Fettling post HERE.
     
  8. Harder D. Soerensen

    Harder D. Soerensen Denmark Subscriber

    Online
    Joined:
    Oct 24, 2017
    Messages:
    1,213
    Location:
    Denmark
    Thanks for sharing John, Duane and Anfeng!

    Arrrgh - now I am wondering which one to prefer - the Firefly or the Dragonfly?
     
  9. snwcmpr

    snwcmpr Subscriber

    Offline
    Joined:
    Nov 16, 2011
    Messages:
    13,573
    Location:
    North Carolina
    Dragonfly is multifuel.
     
  10. hikerduane

    hikerduane Subscriber

    Offline
    Joined:
    Mar 1, 2010
    Messages:
    6,168
    My error, caught a few days late, I showed my FF instead of my DF. Sorry.
    Duane
     
  11. presscall

    presscall United Kingdom SotM Winner SotY Winner Subscriber

    Offline
    Joined:
    Aug 25, 2009
    Messages:
    9,115
    @hikerduane
    So it’s the Dragonfly that’s your ‘go to’ stove then Duane? I thought the Firefly was perhaps a surprise choice for regular use.

    John
     
  12. hikerduane

    hikerduane Subscriber

    Offline
    Joined:
    Mar 1, 2010
    Messages:
    6,168
    The FF is my stove for spaghetti, the DF is best for food that simmers a long time, but I have a BD silent cap for it so it is quiet.
    Duane