Thanks to @toad of the cape I have a Coleman 237. Here it is having been fettled and now fired up: Testing Burning in the mantle. Here it is with a Coleman 236. Note the "reddish" hue of the Peerless mantle compared to the mantle on the 236. Thanks, Alex (and @phaedrus42, who supplied me with the generator) Cheers Tony
Glad you now have one. Are they not common in Australia and what year was it made? The reddish hue must be from the dust storm on Mars.
@MYN The mantle on the Coleman 236 is a Petromax 500. The mantle on the Coleman 237 (front lantern in last photo) is a Peerless 24A. Cheers Tony
The Peerless mantle is probably the Yttrium type and the light will have a slightly golden tinge. It should not be reddish though. That may be caused by some contamination or residue in the mixer gallery and if so it will burn away in time.
@phaedrus42 I’ll see how it goes with a longer burn. Thank you, again, for the generator. I’ll post this lantern in the Reference Gallery tomorrow. Cheers Tony
Hi Tony, Were running both the 237 and 236 with kerosene, gasoline, naphta or Coleman Fuel? I would guess that the 236 is not kerosene-fueled like the 237?
Slighly off topic, but I'm aware that there had been certain mantle compositions, which claimed to contain some Neodymium oxides that would make them glow with pinkish or reddish hues, as stated in the patent attached. (US patent no. 599018).
@Tony Press Congratulations on your 237. I can see in the glare the red hue you speak of, hopefully it will burn off. Mike
It was my pleasure, Tony! You have put it to good use and it will just have been gathering dust in my shed otherwise.
@Tony Press Well done with the fettle Tony. Your 237 is running great. The 236 is also running quite well indeed. Thanks for sharing. Cheers, Norman
Great restoration work Tony. Looks awesome. If the reddish hue doesn't go off after some time, you might want try the shellite on the 237 to check if its really the mantle or a slightly rich fuel mix.
Changed the mantle to a Korean “Love Mantle”. No more reddish hue: Too busy today to post in a Reference Gallery... hopefully tomorrow. Cheers Tony
Could see that you've got the reddish light hue away. So now Peerless makes their mantles to glow reddish? I'd guess that they too have done away with the Thorium, just like Coleman did during the late 80s or 90s.
@MYN I wouldn’t take this observation as proof of anything. This was the first lighting of newly-fettled lantern, and the fitting of the Peerless 24-A was a test to see if everything was working OK. The Peerless sock, for whatever reason, never quite got filled out properly; I may not have had enough pre-heat or pressure when I first fired it. You can see its shape here: Coleman 327 (England, October 1954) I replaced the Peerless with the Love mantle when the had been running and was (very) hot. It “popped” into a ball almost instantaneously. @phaedrus42 is quite an expert on Peerless mantles. I would take advice from him. Cheers Tony
The Peerless 24A is actually designed for high pressure LP gas lamps and not paraffin or petrol pressure lamps and has a smaller diameter than the 111. It happens to work well on the Coleman 200A and 335/339 but is a bit too long for the 201/214/241/7/9 because the spirit cup reduces the available space below the burner cap. Different production lots of the 24A have had different lengths so ymmv Where the 24A is a bit long, the 22A or Coleman #99 work well. Compared to the 111 or Coleman 11 / 1111 I have found the 24A to be a bit skinny on most 350-500 lanterns. The ex-owner of Peerless told me that the 111 is stretched wider from the same 24A stock before cutting and stitching.
@phaedrus42 That’s very interesting information. I suspect the reddish hue was to do with the shape the 24A mantle formed. Cheers Tony
That could very well be, Tony. The extra bit of distance to the generator could have affected the heat transfer and vaporisation. I think heat transfer over a distance would also obey the inverse square law?
@phaedrus42 I tend to defer to greater minds when it comes to physics... But, in practice, I seem to favour mantles that form a globe or golf ball shape, rather than the “sock”. There’s not much science behind that, though. Cheers Tony
I can see your reasoning's on the safe side, Tony. Well, its only a wild guess from me earlier. It only occured to me that Thorium is being less and less used these days, even for mantles from China. I have a number of non-radioactives(China-made) that do run somewhat 'yellower' than most of the much older ones made anywhere else. On the other hand, I've tested some radioactive Thoria types that have a 'sock-shaped' similar to the Peerless 24A. These burned without the characteric yellowish, orangy or reddish hues on a 350cp Petromax lantern. As for golf ball or bulbous shaped mantles, I'm having a similar opinion with you and phaedrus42. They do burn somewhat hotter and in closer proximity to the generator, favouring better vaporization and thus 'brighter'(seems to me) light on a Coleman 237. Only an observation, not exactly a proven fact as well.
