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Linemar Atomic Reactor
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airspyder


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PostPosted: Mon Apr 17, 2017 3:22 pm    Post subject: Reply with quote

Could a copper boiler be fitted inside the steel one, using it as a casing?


I suppose it could be done that way but you would end up with an even smaller boiler than the original.
The John Ericsson engine by Alga hides a smaller boiler under it's insulated dome.
I think Geoff had the right idea by making a new copper boiler.
That might be the way to go.
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ozsteamdemon


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PostPosted: Tue Apr 18, 2017 12:17 am    Post subject: Reply with quote

Bill, sometimes you gotta bite the bullet and go the whole hog.  
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airspyder


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PostPosted: Wed Apr 19, 2017 7:26 pm    Post subject: Reply with quote

I'm considering it as a future project.
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Les


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PostPosted: Fri Apr 21, 2017 5:42 am    Post subject: Reply with quote

I would make a new boiler insert and try to keep the original dome.
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ozsteamdemon


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PostPosted: Fri Apr 21, 2017 10:36 am    Post subject: Reply with quote

Making a new boiler tested my skills and patience to the limit, spent way too much time on it.
The end result was quite pleasing, and when i saw my engine in steam, all those negative thoughts and frustrations disappeared like a puff of steam.



Once my boiler was made, i sent it off to the nickel platers to have it professionally done.



Before and after shots



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Stoker


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PostPosted: Fri Apr 21, 2017 3:10 pm    Post subject: Reply with quote

That might just be the only "Long Life" Linemar out there!
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Dr. Rog


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PostPosted: Fri Apr 21, 2017 4:25 pm    Post subject: Reply with quote

 great work, Oz, have you quoted for a second,  
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airspyder


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PostPosted: Sun Apr 23, 2017 7:29 pm    Post subject: Reply with quote

As Geoff said above, making a boiler like this can try your patience, I know exactly what he means.
As an initial experiment I tried using wood forming blocks like I would for typical end caps, and succeeded in making a couple very sturdy but rather ungainly copper ashtrays.

So, no shortcuts.

On Friday I finished building two drawing dies and punches that will be used to form the halves of the boiler.

Since I don't have a tool for turning a large radius on my lathe I had to cut that on the mill.

This is after the roughing operation.
 photo LMA 1.jpg

The completed tooling.
 photo LMA 2.jpg

A couple of copper discs.

 photo LMA 3.jpg

The discs will get annealed before the first pressing
 photo LMA 4.jpg

Note the holes through the centers of the punches, very important.
 photo LMA 5.jpg

The set up in the hydraulic press.
The top plate aligns the punch and acts as a pressure plate.
 photo LMA 6.jpg

This is a very slow process, anneal, press, anneal, flatten edge, anneal, press.....
A shot of the domed end cap coming through the bottom of the die.
 photo LMA 7.jpg

A day's work produced one each of the boiler halves.
 photo LMA 8.jpg

This morning I cleaned them up, and trimmed the ragged edge.
 photo LMA 9.jpg

Very happy with the fit.


Bill
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stenella


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PostPosted: Sun Apr 23, 2017 9:30 pm    Post subject: Reply with quote

Sweet! keep the pictures coming, this is fascinating stuff!
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ozsteamdemon


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PostPosted: Mon Apr 24, 2017 9:03 am    Post subject: Reply with quote

An excellent result there Bill, well done!

Even with the punch and die, i had the same difficulty and lost count of the times of annealing and trying to dress awkward crinkles out tapping with a hammer. Very frustrating.

One thing is for sure , making new boilers for Linemars aint no get rich quick scheme.  
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MrMamod


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PostPosted: Mon Apr 24, 2017 11:53 am    Post subject: Reply with quote

Bill and Geoff your work always amazes me and the finished products are so much works of art      
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Last edited by MrMamod on Mon Apr 24, 2017 7:04 pm; edited 1 time in total
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Dr. Rog


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PostPosted: Mon Apr 24, 2017 5:18 pm    Post subject: Reply with quote

 fantastic result - you should do a batch.  
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MrDuck


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PostPosted: Tue Apr 25, 2017 8:06 am    Post subject: Reply with quote

Impressive results. Renews the plant completely
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Les


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PostPosted: Tue Apr 25, 2017 8:16 am    Post subject: Reply with quote

That's incredible, I am sure if you put a few replica boilers on Ebay they would get snapped up at any price.
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airspyder


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PostPosted: Tue Apr 25, 2017 5:21 pm    Post subject: Reply with quote

Thank you all for the fine comments, they are always appreciated.
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