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Supaburner's for Model & Toy Steam Boilers Explained

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Blue Heeler12/07/2019 08:42:51
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189 forum posts

Supaburner's for Model & Toy Steam Boilers Explained and how to make one.

 

Edited By Blue Heeler on 12/07/2019 08:43:01

Eric Cox12/07/2019 10:22:51
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503 forum posts
29 photos

Brilliant burner. Can you explaim the fiberglass wick a bit more, ie how do you make or where do you obtain the wick.

Baz12/07/2019 11:23:30
225 forum posts

+1 for further details of fibreglass wick

Chris Bradbury12/07/2019 11:37:01
16 forum posts

Now you have explained how it works I'm going to make one. Thanks for sharing.

Chris

Ian S C12/07/2019 12:46:14
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7427 forum posts
230 photos

Fibreglass wick as for lamp for aromatic oils, or threads pulled from woven fibreglass cloth, think I'v got some of that, it was called Dynal cloth 50 years or so ago, we used it for abrasion resistance on the leading edge of the tailplane of our Cessna topdressing aircraft. I have mad similar burners, but both ends of the burner tube went into the fuel tank, and the burner end consisted of a complete loop with the little hole in the bottom of the loop. I used asbestos string.

Ian S C

Ian S C12/07/2019 12:54:46
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7427 forum posts
230 photos

Fibreglass wick as for lamp for aromatic oils, or threads pulled from woven fibreglass cloth, think I'v got some of that, it was called Dynel cloth 50 years or so ago, we used it for abrasion resistance on the leading edge of the tailplane of our Cessna topdressing aircraft. I have mad similar burners, but both ends of the burner tube went into the fuel tank, and the burner end consisted of a complete loop with the little hole in the bottom of the loop. I used asbestos string.

On second thoughts don't use Dynel, it,s not fibreglass, but acrilic, I forgot that.

Ian S C

Circlip12/07/2019 12:58:00
961 forum posts

Aren't glass fibre raw materials IE woven cloths and roving's pre coated?

Regards Ian.

Blue Heeler13/07/2019 06:48:55
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189 forum posts

Fibreglass wick should be pretty easy to come by from large hardware stores, eBay, BBQ & fireplace sellers etc.

Ian, a closed loop supaburner sounds interesting. I will have to make one and try it out.

Simon Collier13/07/2019 07:44:39
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297 forum posts
52 photos

Looks impressive. Did you actually crimp the end trapping the wick fibres? Not ideal for silver brazing I would have thought. Also, is the lid an air tight fit, or just lacking a breather hole? Third question: how many burners to replace the 4 wick x 1/4" diameter burner I made for my Ellie tram? The wicks are ceramic by the way, a step up from fibreglass. 4). Any reason not to have 2 or more burners supplied by the same tank?

Your workshop is indecently tidy and orderly. I am jealous, as mine is like a commando training obstacle course.

Blue Heeler13/07/2019 08:05:08
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189 forum posts

G'day Simon,

!. You can just poke the loose fibres in before silver brazing.

2. I have fibre washers on some and O rings on other screw caps so pretty air tight.

3. Not sure about that.

4. I've seen 2 and 3 wick Supaburners with the copper tubes at staggered lengths. They give off a lot of heat. Just need the spirits container big enough to feed them for a period of time. Best thing about these burners is that the materials are pretty cheap and makes multiple experimentation possible. I want to give one of Ian's closed loop ones a try.

martin perman13/07/2019 09:13:05
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1614 forum posts
67 photos
Posted by Ian S C on 12/07/2019 12:54:46:

Fibreglass wick as for lamp for aromatic oils, or threads pulled from woven fibreglass cloth, think I'v got some of that, it was called Dynel cloth 50 years or so ago, we used it for abrasion resistance on the leading edge of the tailplane of our Cessna topdressing aircraft. I have mad similar burners, but both ends of the burner tube went into the fuel tank, and the burner end consisted of a complete loop with the little hole in the bottom of the loop. I used asbestos string.

On second thoughts don't use Dynel, it,s not fibreglass, but acrilic, I forgot that.

Ian S C

Ian,

I collect campingstoves and have a stove that runs on petrol it is a closed loop as you describe, the burner hole is at the bottom of the rim and when lit is very efficient, the filler cap doesnt have a open whole in the cap, there is one but is has solder over it so that if the stove over heats it melts the solder to dump the pressure, the stove was made in the 40's - 50's possibly earlier.

Martin P

AdrianR13/07/2019 10:07:15
265 forum posts
20 photos

What a wonderful idea for a burner.

I wonder if stove glass fibre rope could be used as a wick.

Simon Collier13/07/2019 10:36:55
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297 forum posts
52 photos

Thanks for answers. One more, what diameter is the burner tube? Sorry if you said it in the video.

Blue Heeler14/07/2019 00:41:10
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189 forum posts
Posted by Simon Collier on 13/07/2019 10:36:55:

Thanks for answers. One more, what diameter is the burner tube? Sorry if you said it in the video.

G'day Simon,

The smaller one the copper tube is 1/4 and 5/16 for the larger one.

Blue Heeler14/07/2019 00:43:11
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189 forum posts
Posted by AdrianR on 13/07/2019 10:07:15:

What a wonderful idea for a burner.

I wonder if stove glass fibre rope could be used as a wick.

Yes that's fine, just unweave some strands.

mick H14/07/2019 05:29:46
687 forum posts
19 photos

Fascinating stuff Blue Heeler. How do you control heat output?

Mick

Boiler Bri14/07/2019 06:32:33
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798 forum posts
285 photos

Thats a great idea. However I would not change my wick burner in my Roundhouse loco though. I know that the burner runs out of meths before the water level becomes unsafe in the boiler.

If anybody has a go at fitting one to an old Mamod i would also advise caution as i think some of there brass boilers are soft soldered and the above would apply even more.

Ever cautious 🤔💥

Bri

Ian S C14/07/2019 11:06:54
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7427 forum posts
230 photos

Don't know what Blue Heeler used(probably similar). I use 1/4 OD copper mainly, but as I don't buy much, its a case of whats in the junk box. I did have some copper plated steel tube from a fridg, that worked ok, it was either 6 mm or 1/4".

Ian S C

Blue Heeler15/07/2019 04:22:53
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189 forum posts

Ian, do you happen to have a photo of your closed loop burner?

Cheers,

Jim

Ian S C15/07/2019 12:48:13
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7427 forum posts
230 photos

Sorry Jim, can't even remember where I put it. The first one I built, the tank was vertical copper tube about 2 1/2" high x 1" dia, the loop tube 3/16" copper tube went into the tank near the bottom, and was bent up so the the hot end was above the top of the tank, it worked but was not a good design as the flame area was too high to be of any use. I did make a few more, but as I use gas for heating most of my hot air motors I didn't do too much development work, perhaps I'll have another go.

Got a tin boat about 26" long powered by a hot air motor with a single wick meths burner, perhaps a pressure burner would give it a bit of a boost, must try that.

Ian S C

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