Tilley X246B 500 - October 1990

Discussion in 'X246B' started by KAB, Mar 29, 2020.

  1. KAB

    KAB Subscriber

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    This is another Covid-19 survivor.... thrown away between 'stay at home' and lockdown.


    20200319_093543.jpg 20200319_093520.jpg 20200319_093523.jpg 20200319_093552.jpg

    Box containing spares and paperwork

    20200319_093638.jpg 20200319_093644.jpg
     
  2. JEFF JOHNSON

    JEFF JOHNSON United Kingdom Subscriber

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    It should restore well enough.
     
  3. ROBBO55

    ROBBO55 Subscriber

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    Congratulations, it should clean up nicely :thumbup:
     
  4. AussiePete

    AussiePete Australia Subscriber

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    Under the dirt and stuff, it looks to be in reasonable good nick even the hood should come up nicely. It should restore very well. I'm looking forward to the money shot.
    Cheers
    Pete
     
  5. BigStevie

    BigStevie United Kingdom Subscriber

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    @KAB When you said, thrown away, was this a freebie?
     
  6. Mackburner

    Mackburner United Kingdom Founder Member Subscriber

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    These always worried me. All X246B tanks are prone to the base plate distorting or dishing down and for the 300cp lantern the instructions state that full pressure is a total of 100 pump strokes with a full tank of one and a half pints of paraffin. The X246B 500 instructions state full pressure is 150 pump strokes. That is a considerable increase in pressure which I know will increase light power but can surely only exacerbate the base plate problem? ::Neil::
     
  7. paparazi

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    I don't even know how they can quote such figures as the pressure is very much dependant on the volume of air present. An tank a quarter full of fuel will take many more pumps to pressurise that one that is three quarters full. I know it is not a 'full proof' method but I would much rather rely on pump resistance..the 'change' in resistance of the pump. You just feel when its enough, which I know isn't particularly useful to the uninitiated but entirely accurate in my mind.

    Martin
     
  8. KAB

    KAB Subscriber

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    Replaced the pump washer and filled half full and gave a total of 60 pumps

    20200329_201510.jpg
     
  9. podbros

    podbros United Kingdom Subscriber

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    That looks nice and bright to me! :) ... Was that the 500 cp mantle, or a standard one you used?
     
  10. AussiePete

    AussiePete Australia Subscriber

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    She’s running well, well done.
    Cheers
    Pete
     
  11. KAB

    KAB Subscriber

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    The previous owner was kind enough to leave a couple of Tilley 500 mantles in the box :thumbup:
     
  12. AussiePete

    AussiePete Australia Subscriber

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  13. James K

    James K Subscriber

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    Your lamp is running well, a great find.
    It is also a reminder that perfectly good lamps and precious spares get thrown away every day. We must do what we can to save them.
    Well done for doing your bit.
     
  14. KAB

    KAB Subscriber

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    Another couple of pictures

    Wide view lighting up the garden

    20200329_204353.jpg

    This one shows the difference between the 500cp burner (left) and the standard burner (right)

    20200329_144436.jpg
     
  15. Mackburner

    Mackburner United Kingdom Founder Member Subscriber

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    It's actually quite accurate. The figures quoted are always with a full tank of one and a half pints of paraffin. That's 30floz or a tad under a US quart which is 32floz. So the air volume will always be the same. If I remember right they also suggested about 40 stokes an hour to maintain pressure. Many years ago I used a pressure gauge fitted to the control cock to test several Tilley lanterns and the 100 pump strokes always gave a pressure of about 2 bar. ::Neil::
     
  16. paparazi

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    Makes sense based on fixed quantities and font volumes but who can say just how air tight the pump leather is on any given lamp or the point at which the pressure in the pump self seals that leather seal, some 'grab' at the top of the stroke, others, perhaps a little hardened, worn or dry, may not produce pressure until the last few centimetres. So whilst the science stacks up it doesn't always follow through to fact...too many imponderables!
    Martin
     
  17. JEFF JOHNSON

    JEFF JOHNSON United Kingdom Subscriber

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    It's working well!:thumbup:
     
  18. X246A

    X246A United Kingdom Subscriber

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    Hi Martin

    A lucky find! How did the chrome work fare.

    Regards Jeremy

    @paparazi
     
  19. Mackburner

    Mackburner United Kingdom Founder Member Subscriber

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    Martin. You are quite right of course but Tilley never quoted a figure for max pressure so the pump stoke count will always work and I did say ABOUT 2 bar. I have always assumed the designed max pressure of Tilley stuff to be 30psi. With no pressure gauge or indicator counting stokes will do the job and in any case worn leather Etc may reduce the induced pressure but can never increase it so the lamp will still work OK and be safe. It is Mickey Mouse engineering perhaps but it kinda works. Point was of course that the 500 implies a more powerful light and I suspect a deal of that extra cp was due to a higher max pressure and not just the vaporiser/burner. That worries me when talking about a tank that we know is prone to distortion. ::Neil::
     
  20. ColinG

    ColinG United Kingdom Subscriber

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    Looking at your photo, I think you've got an older deep globe on your X 246b 500.
     
  21. AussiePete

    AussiePete Australia Subscriber

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    I reckon you’re right @ColinG
    It certain looks to be a deep dish globe ...... that’s a bonus for when it could be swapped to complete an earlier X246.
    Cheers
    Pete
     
  22. KAB

    KAB Subscriber

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    Confession time - the globe is a deep one, but came from a Bullfinch 1616 lamp and is marked as such.
     
  23. podbros

    podbros United Kingdom Subscriber

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    Make do and mend! :thumbup:...Good stuff, especially as the lamp was free with useful spares, and looks to be going like a train!
     

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