The "Bill Bomb" Stove

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Mar 8, 2007
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Just thought that I'd share a quick little project that I did today. I've been reading about volcano stoves, Kelly Kettles, etc, and stumbled on this little gem. It's an alcohol stove which is a variation of "The Borde Bombe" that was created by a scoutmaster for his troop. You can see the original video by its creator HERE

It cost me about 5 clams in parts at the hardware store, although this stuff is probably laying around in most people's garages. Let's start with the parts list:

- A length of 1/2" copper pipe. I cut mine to about 8" long and it holds about 5 tbsp of alcohol. Try different lengths to suit your needs.

- A copper "tee" or union with 1/2" ends and a 3/4" center

- Copper pipe end cap of 1/2". You can substitute the pipe and cap if you can locate a copper stub (one end already sealed).

- Wire hanger or some other stiff material to create a stand

- A priming tray (small tin can lid)

Here are the parts:

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Here is the completed setup:

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Basic operation (from what I was able to glean from the video) is relatively straightforward. Here are the steps that I took to get started:

First, I slid the stand over the pipe. Next, using a syringe, I filled the pipe with denatured alcohol. Mine took about 5 tbsps of fuel. Finishing the process was the placement of the union on the top of the pipe and setting it on its side. Place the primer tray underneath the union as you are laying it down so as to catch a little of the draining alcohol. This will serve as your primer. Take out your favorite lighter (or, in my case, a firesteel) and light the fuel on the primer tray. This is what I got:

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After it heats up, you will begin to hear the "jet sound" (very cool) and the flame will stop coming from the bottom and get stronger at the outlet, thusly:

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Earlier in the day, I made a quick and dirty coffee can stove to test the Bill Bomb. Here is the setup with the burner underneath:

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Burner and stove in operation:

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I took one cup of water and placed it into a stainless cup to see how long it would take to boil. I live at 12' about sea level and the water was approx 72 degrees when I started. It took 12 minutes to come to a good simmer without a lid, although I did not get it to boil. I was able to get a stronger flame by putting my firesteel under the end to tilt the angle as fuel was running out.

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Here's a shot of the "business end" as it was towards the end of the fuel:

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In summary, it was a fun little project. I suspect that with different heights over the flame, it is possible to get a rolling boil of the water.

Thanks for reading!
 
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Hum. seems neat, though 12 minutes is pretty slow for water of that temp from the alcohol stoves that I have built, used, tested. Have you tried putting the jet right up against the metal cup?

Did the piping get pretty hot?

Looks interesting!
 
Yeah, 12 minutes is wildly slow. I didn't put the jet right on the cup, although that is something that I want to try next. Will advise.

The tube did get hot, very hot. You could touch the end cap to move it providing that you did it quick. :)

Hum. seems neat, though 12 minutes is pretty slow for water of that temp from the alcohol stoves that I have built, used, tested. Have you tried putting the jet right up against the metal cup?

Did the piping get pretty hot?

Looks interesting!
 
I'd be interested to see how the effectiveness would change as the size of the piper changed as well.

You might also try a aluminum foil wind screen/shield on a shorter stove?

Thanks for experiment for us!
 
very very cool!

think it will work if i use 2" copper pipe? ;)

edit: i wonder if one was cap BOTH ends, get rid of the T, and drill a 1/4" hole in one end.......... then fill it, put it on the stand and place the priming pan under the copper pipe to heat it up, then light the end with the hole...It would be pressurized like a alky stove and might get better flame dispersal....
 
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Very cool. So what would you use it for? Take it out camping? Did all the fuel run out before you finished the experiment? Very interesting project to me.
 
I wonder if you could cap the ends with perforated caps, kinda like a watering can head, to get better pressure, better burn?
 
Very cool! Maybe crush the opening to form a slim, oval shape or heck, just a 90 elbow to shoot the flame straight up!
I like the idea of putting it right up to the cup. :thumbup:
 
That is really slick, Peripatew. Kamkazmoto: 5 tbsp burned for approximately 25 minutes.

Rockywolf: It was originally designed as a burner for a Swiss Volcano Stove. It can be used anywhere twigs are used to fuel a setup like that.

Regarding the capped ends, that is something that I will try and report back.
 
I can't believe you guys! Not one of you asked WHAT KNIFE IS THAT LAYING THERE?! Nice Jet stove marshmallow roaster!
 
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