Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Hi all,
I haven't shared anything for awhile, mostly just check the forum to see whats going on.
Anyway I thought I'd share my latest success.

I picked ip a Wilesco R200 that looked pretty good considering its age but of course it didn't run.
After figuring out how to disassemble it without damaging the tinwork I discovered that the bottom of the boiler was getting pretty thin due. Why people don't drain thier boilers before tucking them away for long periods of time is beyond me.
Anyway there was about a quarter inch of Zinc buildup in the boiler when the bottom was removed.
The steam line was plugged and the engine was very stiff.

First I desoldered the boiler from the engine and got the engine running well on air.

Then it was time to dig in the copper box and make some parts.
I had a 12 inch piece of 2" copper pipe and a couple of caps which were cut to size.

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I pressed a recess in the top boiler cap so the Safety valve woul mount flush like the original.

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I was able to salvage the double coil and solder it to the new boiler.
The larger diameter tube is solered top and bottom into the boiler, the heating element runs up through the center of the coiled tubing.
The water enter the coil from the bottom of the boiler, as it's heated it goes up the tube and re-enters the top of the boiler as steam.
The smaller diameter tube is the steam pipe it comes from the top of the boiler and coils down the other way, the heating element superheats the steam on its way to the engine.

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This is the old boiler next to the new one.

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A short clip from the first run.



Sorry I didn't take more pictures of the build.

Thanks for looking.

Bill

Thanks Nick,
Yes, very common.
The missing dome is also common, I will need to fabricate one of those as well.

Nicely done!

These "nuclear plants" rarely appear without parts missing or mechanical issues...

Quote from: AirSpyder on February 22, 2022, 10:20:46 pm

Thanks Nick,
Yes, very common.
The missing dome is also common, I will need to fabricate one of those as well.

Do you need dimensions?

Thanks Nick, Yes I would love some dimensions.
I had found some of the dimensions on the UM&OSF but they were incomplete.

Quote from: Nick on February 22, 2022, 10:25:43 pm

Quote from: AirSpyder on February 22, 2022, 10:20:46 pm

Thanks Nick,
Yes, very common.
The missing dome is also common, I will need to fabricate one of those as well.

Do you need dimensions?

Thanks Nick, Yes I would love some dimensions.
I had found some of the dimensions on the UM&OSF but they were incomplete.

Thanks Charlie

Thank you Bruce, I was most concerned that the heating element would not work when I plugged it in, and of course I couldn't try it until I could keep water in the boiler. It feels really good to have it running again.

Bill

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It's a very nice looking setup. Question, what type/brand solder did you use?