Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines
The Regular Stuff: Chat, Buy, Sell, Off Topic, etc. => General Discussion - Model & Toy Steam Engines – Stirling Cycle – Flame Lickers – Small Antique Originals => Topic started by: SteamerJ on August 06, 2025, 04:02:58 pm
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Hi John, You have acquired an interesting Stuart boiler that is clearly in great shape.
That boiler will also very nicely power an S-50, 10V, 10H, Stuart Beam, Jensen 20, etc., all with generators or other work load. May also work well with a well built Stuart D10 or Score.
By the way, I still have your twin heater S-50 steam plant with the prototype ball bearing generator.
As for asbestos that came originally in fireboxes, I take them outdoors and treat them with ladies hair spray. Once it sets it prevents the asbestos fibers from flying off in your home or shop.
It is not a perfect solution but it sure makes them safer.
Gil
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An eBay seller is offering replacement ceramic panels for Stuart boilers.
https://ebay.us/m/LgofFQ
I bought a set from them, as soon as I won the boiler Sunday. It doesn’t look like they shipped yet. I’m itching to get it back together and ordered some from Amazon and will have it tomorrow.
G'day John
The 504 I bought off you years ago I have run hundreds of times with no insulation, just the metal Stuart sides and there's heaps of heat and no loss that I can tell (I've taken the asbestos out of my three Stuart boilers) I would be very careful using that ceramic stuff.....its just going to be the new 'asbestos' in years to come.
I made this video around 10 years ago -
https://www.youtube.com/watch?v=RUxIn8rvbMY
Jim I’m more concerned with the paint. I fired it up without any on one side and it destroyed the paint. It was like a Jensen.
I don’t worry excessively about most things. I’m 63 and have been a smoker for about 50 years. We are all going to die from something. I do appreciate your concern though mate.
Those 504s are terrific boilers. This is my first smaller one. I think it will run my PM Research #3 quite nicely.
I painted your 504 sides with high temp paint and went through the baking process and its been good for years.
Great to have you back in the hobby mate.
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You are going to like that boiler ! I have one with a Bix burner , and that little dude will make a lot of steam . Here is a picture .
I have had a couple of 504s and know that I will be happy with this one.
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An eBay seller is offering replacement ceramic panels for Stuart boilers.
https://ebay.us/m/LgofFQ
I bought a set from them, as soon as I won the boiler Sunday. It doesn’t look like they shipped yet. I’m itching to get it back together and ordered some from Amazon and will have it tomorrow.
G'day John
The 504 I bought off you years ago I have run hundreds of times with no insulation, just the metal Stuart sides and there's heaps of heat and no loss that I can tell (I've taken the asbestos out of my three Stuart boilers) I would be very careful using that ceramic stuff.....its just going to be the new 'asbestos' in years to come.
I made this video around 10 years ago -
https://www.youtube.com/watch?v=RUxIn8rvbMY
Jim I’m more concerned with the paint. I fired it up without any on one side and it destroyed the paint. It was like a Jensen.
I don’t worry excessively about most things. I’m 63 and have been a smoker for about 50 years. We are all going to die from something. I do appreciate your concern though mate.
Those 504s are terrific boilers. This is my first smaller one. I think it will run my PM Research #3 quite nicely.
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You are going to like that boiler ! I have one with a Bix burner , and that little dude will make a lot of steam . Here is a picture .
-
An eBay seller is offering replacement ceramic panels for Stuart boilers.
https://ebay.us/m/LgofFQ
I bought a set from them, as soon as I won the boiler Sunday. It doesn’t look like they shipped yet. I’m itching to get it back together and ordered some from Amazon and will have it tomorrow.
G'day John
The 504 I bought off you years ago I have run hundreds of times with no insulation, just the metal Stuart sides and there's heaps of heat and no loss that I can tell (I've taken the asbestos out of my three Stuart boilers) I would be very careful using that ceramic stuff.....its just going to be the new 'asbestos' in years to come.
I made this video around 10 years ago -
https://www.youtube.com/watch?v=RUxIn8rvbMY
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After thinking about it, I think they got the ends mixed up and put them opposite of what they should be. I wonder if it makes more valuable like the imperfect coins.
Not sure what you mean by "opposite", but the Thermic Syphons typically do hang down further in the back, away from the boiler face that has the sight glass, just as yours seems to be made.
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After thinking about it, I think they got the ends mixed up and put them opposite of what they should be. I wonder if it makes more valuable like the imperfect coins.
-
An eBay seller is offering replacement ceramic panels for Stuart boilers.
https://ebay.us/m/LgofFQ
I bought a set from them, as soon as I won the boiler Sunday. It doesn’t look like they shipped yet. I’m itching to get it back together and ordered some from Amazon and will have it tomorrow.
-
An eBay seller is offering replacement ceramic panels for Stuart boilers.
https://ebay.us/m/LgofFQ
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I just got this Stuart 500 boiler from eBay. I assumed from the pictures that someone just had the safety valve and the valve swapped. I unscrewed them and saw that they were correct. Every picture that I have seen has the safety in the back. The valve has a 3/16-40 thread and that’s what the back bushing is. As you can see from the picture, the superheater tube also lines up with the back bushing.The boiler is in fantastic condition but I took it apart to remove the asbestos. I had to repaint it after I fired it without any insulation. I don’t recommend it.