Author Topic: Boiler with steam engine?  (Read 3559 times)

Offline Michael S.

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Boiler with steam engine?
« on: January 21, 2026, 06:48:54 pm »
I got lucky on eBay today and bought this steam engine set. The woman who sold me the engine and boiler said the steam engine belonged to her father and is over 30 years old. Her father was an engineer, and the steam engine set was a gift from colleagues for an anniversary. (A very generous gift!)

I don't think I'll have to do much repairs on it. Maybe just clean it.

The boiler is from Stuart? Approximately 70 mm in diameter. But who manufactured the engine? Maxwell Hemmens?

The small horizontal steam engine came with it and is perhaps a Wilesco or something similar.

Michael

Offline crueby

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Re: Boiler with steam engine?
« Reply #1 on: January 21, 2026, 07:14:02 pm »
Very nice find!  It would be a good idea to do a static pressure test with the boiler safety valve.

Offline Michael S.

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Re: Boiler with steam engine?
« Reply #2 on: January 21, 2026, 07:24:21 pm »
Yes Chris, that definitely needs to be done. I'm also thinking of using a gas burner instead of methylated spirits.

Offline PaulR

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Re: Boiler with steam engine?
« Reply #3 on: January 21, 2026, 08:08:06 pm »
What's with the odd shaped top on the water tank?

Offline Michael S.

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Re: Boiler with steam engine?
« Reply #4 on: January 21, 2026, 08:17:24 pm »
It's an egg cup used as a lid on a tin can.

Offline PaulR

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Re: Boiler with steam engine?
« Reply #5 on: January 22, 2026, 08:05:09 am »
It's an egg cup used as a lid on a tin can.
Yes I could see it was a can but an egg cup?!  :Lol: I'd be inclined to put it to better use and position it on top of that boiler  :Lol:

Offline john mills

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Re: Boiler with steam engine?
« Reply #6 on: January 22, 2026, 12:43:52 pm »
does it have the original stuart method burner?
the original metho  burner  works vaporises the metho  and works well 

Offline Michael S.

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Re: Boiler with steam engine?
« Reply #7 on: January 22, 2026, 04:59:46 pm »
The burner looks like this:

Offline john mills

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Re: Boiler with steam engine?
« Reply #8 on: January 22, 2026, 09:23:31 pm »
that would have been the one that suits that boiler  try that with metho you should find in that boiler it will work well

Offline Michael S.

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Re: Boiler with steam engine?
« Reply #9 on: January 24, 2026, 08:10:58 am »
I have a question about the boiler. What is the maximum permissible operating pressure for this 501 boiler?

I have the original operating instructions for the boiler, but the pressure limit isn't mentioned there.

Michael

Offline Michael S.

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Re: Boiler with steam engine?
« Reply #10 on: January 24, 2026, 09:29:05 am »
I've now taken everything apart. The individual parts need to be cleaned. The valves need to be readjusted, and perhaps the base plate needs to be repainted black.

Offline crueby

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Re: Boiler with steam engine?
« Reply #11 on: January 24, 2026, 01:23:17 pm »
I have a question about the boiler. What is the maximum permissible operating pressure for this 501 boiler?

I have the original operating instructions for the boiler, but the pressure limit isn't mentioned there.

Michael
Those boilers were designed for a 60 psi working pressure.

Offline Michael S.

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Re: Boiler with steam engine?
« Reply #12 on: January 24, 2026, 01:56:29 pm »
Thanks Chris for this information. I'll set the operating pressure at the safety valve to 4 bar.

Regards, Michael

Offline Michael S.

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Re: Boiler with steam engine?
« Reply #13 on: January 25, 2026, 06:34:56 pm »
I'm currently cleaning everything and getting the boiler and motor working again. The motor wouldn't turn. It looks like the eccentrics are stuck. So, I have to take everything apart after all. Old oil had completely gummed up the eccentrics. That stuff was holding everything in place. Then it looked like the connecting rod was crooked! And it was. Since everything was now disassembled, I decided to repaint and re-seal the parts. The O-ring on the piston was rock hard. I also didn't like that the screws and nuts had been painted over.

The boiler looked good, and the pressure test is still to come. The wooden base has felt feet on the underside. I built a steam collector and modified the steam whistle. Let's see if much condensation forms in this position. The water level indicator will get a drain valve.

Offline crueby

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Re: Boiler with steam engine?
« Reply #14 on: January 25, 2026, 07:25:41 pm »
Oh yes, really needed the cleaning!  Looking much better!

 

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