Stupid question regarding Coleman Q77, Q99, and R55 generator jets...

Discussion in 'Pressure Lamp Discussion Forum' started by Remus1956, Oct 10, 2024.

  1. Remus1956

    Remus1956 United States Subscriber

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    The question. Does the Q77/Q99/R55 use the jet/tip from a Coleman 200 generator? Or am I crazy?

    The story:
    I do not know if you remember me and my fiasco with trying to get 1 Coleman quick light lantern going but here is that mess haha.
    I think I need to figure out Mica...2 project Coleman quick lites | Classic Pressure Lamps & Heaters

    Well I actually ended up building 3 of them, the last being a 427 with the external pump tube. Well I was trying to find another mica globe for that one (beat up one) and ended up seeing a lantern that was cheaper than buying a globe but was a complete lantern. Listed as an "antique coleman lantern" it looked like a slant 1929 instalight/quicklite.

    Before I knew it...wife ended up going into her ebay and buying it for me as she was having a hard time to find me something for christmas.

    So it comes saturday but will have to wait to clean it up for a while...so here is the listing photos for now.
    Screenshot_20241010_044243_eBay.jpg Screenshot_20241010_044248_eBay.jpg Screenshot_20241010_044253_eBay.jpg Screenshot_20241010_044257_eBay.jpg Screenshot_20241010_044302_eBay.jpg Screenshot_20241010_044306_eBay.jpg Screenshot_20241010_044311_eBay.jpg Screenshot_20241010_044316_eBay.jpg Screenshot_20241010_044321_eBay.jpg
     
  2. presscall

    presscall United Kingdom Subscriber

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    @Remus1956
    The information you need is in the attached table, with a bit of a delve!
     

    Attached Files:

  3. Remus1956

    Remus1956 United States Subscriber

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  4. Remus1956

    Remus1956 United States Subscriber

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    And thank you @presscall that exactly explained what i needed to know
     
  5. Toby Garner

    Toby Garner United States Subscriber

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    The Q99 & Q77 gens used an un-shielded (flat topped) 0.008" orfice. The R55 would use the same size orfice, but have a built in shield to protect the pricker when sticking through the orfice. The 242/200 sized orfice measures at 0.007"
     
  6. Mackburner

    Mackburner United Kingdom RIP - Founder Member

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    At 1929 it could have a T88 generator which incorporates a pricker screwed into the end of the needle valve. Looks the same as a Q77 externaly but different innards. ::Neil::
     
  7. Remus1956

    Remus1956 United States Subscriber

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    @Mackburner I'll have to check it... Do I need to remove it or can it be seen from the outside?
     
  8. Mackburner

    Mackburner United Kingdom RIP - Founder Member

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    Externally the are the same. If you remove the gen either there will be a rod exposed or not. You can unscrew the gland of the control and unscrew the control needle valve. That needle valve end for T88 has a threaded end for a pricker rod. If the gen is a T88 there will be a rod but sometimes this has been removed and a Q77 gen fitted so there is the thread but no rod. The T88 gen is long obsolete but there was an Iron which used the same generator with a different tip but the lamp will run fine with anyof the Q gens. ::Neil::
     
  9. Remus1956

    Remus1956 United States Subscriber

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    @Mackburner I think it's a steel Q77. I do not see a rod here... The knob looks like you could screw a rod into it... But no rod exists.
    20241014_051240.jpg 20241014_050900.jpg 20241014_050652.jpg 20241014_050636.jpg
     
  10. Mackburner

    Mackburner United Kingdom RIP - Founder Member

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    Sounds about right. The rod screwed into the point of the needle valve but would have been removed to fit a replacement Q77 gen. ::Neil::.
     
  11. Toby Garner

    Toby Garner United States Subscriber

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    The T88 was rather short lived and troublesome. Coleman decided the Q77 was much more user for their dirtier fuel of the era. I've built T88 setups out of the iron gens for all the slant lamps and lanterns in my collection as they are a fun project and I like the adjustable light output.

    PXL_20230509_203731623~3.jpg

    PXL_20230509_204441862~3.jpg
     
  12. Remus1956

    Remus1956 United States Subscriber

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    @Toby Garner I am almost sure this one is a steel one...you say they can be converted? Is there a post you can show me?
     
  13. Toby Garner

    Toby Garner United States Subscriber

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    @Remus1956 the steel Q77's are fairly common. I'm guessing they were sold through the war years.

    As far as converting to a T88, the first step is to pull the valve stem and make sure that it is threaded for the rod. Most of those Reese's cup style valve wheels have the threaded stem, but not all of them. If you're lucky enough to have the threaded stem, then you need to source a 603-299 iron generator to start the conversion.

    Here's my process for the conversion:

    Slant T88 conversation (take 2) - The Coleman Collectors Forum
     
  14. Remus1956

    Remus1956 United States Subscriber

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  15. Toby Garner

    Toby Garner United States Subscriber

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    You'll have to remove the valve stem from your valve to be able to tell if it's threaded. Click on that link I shared above and I should have all the photos you need to know.
     
  16. Remus1956

    Remus1956 United States Subscriber

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  17. Toby Garner

    Toby Garner United States Subscriber

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  18. Remus1956

    Remus1956 United States Subscriber

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  19. Toby Garner

    Toby Garner United States Subscriber

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    That's what you needed!
     
  20. Remus1956

    Remus1956 United States Subscriber

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    @Toby Garner question...can brass screen work instead of the steel wool? Just curious as it works in stoves...
     
  21. Toby Garner

    Toby Garner United States Subscriber

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    It's worth a shot. I use bronze wool because I have it, but try the screen. If it pulses you need more or a different material.
     
  22. Remus1956

    Remus1956 United States Subscriber

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    @Toby Garner delving deeper... This thing is interesting...I know it's a fuel pickup but I guess it's how the instant light works...

    Wonder where to prick it...air goes through it (big plus)
    20241015_084657.jpg 20241015_084644.jpg
     
  23. Toby Garner

    Toby Garner United States Subscriber

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    Under that screen will be a small orfice. This orfice and screen need to be spotless as well as the fount and fuel you run for the instant light circuit to work correctly. I like to pull them apart and soak them in lye to remove any organics. Then I use a spare gen pricker to make sure the orfice is good and clear before reassembly.

    PXL-20210928-211508460-2.jpg
     
  24. Remus1956

    Remus1956 United States Subscriber

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    @Toby Garner thanks...didnt know they came apart. Will do!
     
  25. Remus1956

    Remus1956 United States Subscriber

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    @Toby Garner ok I have the generator...I think I am a little confused.
    So... Use this cleaning needle...and install this as you described...into this tube with a Q77 tip?
     
  26. Toby Garner

    Toby Garner United States Subscriber

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    Correct. You can use the iron gen orfice also, but the Q gen tips allow the pricker to clear the orfice a turn or two sooner in my experience. Opening the valve a few turns can by finicky when trying to light the lantern.
     
  27. Remus1956

    Remus1956 United States Subscriber

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    Well I'm back .. Merry Christmas btw!
    Cleaned it up pretty nice and it's running...some slight pulsing but I'm going to let it run a bit later for a while to get nice and hot to see if it stops...
    20241224_115248.jpg 20241224_115236.jpg
     
  28. Remus1956

    Remus1956 United States Subscriber

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    @Toby Garner Merry Christmas....
    Got a question for you...I still have pulsing a little bit. I've taken the whole lantern apart and pricked even the fuel pickup... Built the generator like you mentioned and it works! Just a slight pulsing... Maybe mantles are short?
    Compared to my other quick lites... These seem to be higher up?
    Same brand of mantles... American mantles on all
    20241225_170024.jpg 20241225_165818.jpg
     
  29. Toby Garner

    Toby Garner United States Subscriber

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    Looking good!! Merry Christmas. If everything is there and spotless inside the fount I would look into the generator. Did you use brass wool, or something else? I pretty well pack these top to bottom and have great luck with them. A slight pulse when cold is expected, but once good and warm it should be steady.
     
  30. Remus1956

    Remus1956 United States Subscriber

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    @Toby Garner and the mantle length looks ok? The burner tubes looks original but then I've never seen a slant before this one...

    How long until you would say it would be hot enough to not pulse? 15 minutes or so?
    I used bronze wool....hmmm... Maybe that's it... Hard to find brass wool... I'll have to look into that one
     

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