#257535 - 03/12/13 09:24 PM
Penny Stove
|
Carpal Tunnel
Registered: 05/05/07
Posts: 3601
Loc: Ontario, Canada
|
Stuck inside on a cold and rainy day, our 6 week old sound asleep, my nine year old chicken pox inflicted Cub Scout and I decided that today was the day to make a penny stove. We used 2 empty cans of Molson Canadian, 1 full one, on exacto knife and a bit kit to give us an even edge. So far, we haven't used any jb weld and we haven't tired it out yet. But, my husband is on his way home with a yellow bottle of Heet so we can give it a go!
|
Top
|
|
|
|
#257538 - 03/12/13 10:15 PM
Re: Penny Stove
[Re: ]
|
Addict
Registered: 03/18/10
Posts: 530
Loc: Montreal Canada
|
Better make them now, no more pennies in Canada. Well done. Sadly all my liquor comes in glass bottles.....Lol. Coke can works too, I made two with them since I don't have any beer can either.
|
Top
|
|
|
|
#257555 - 03/13/13 11:28 AM
Re: Penny Stove
[Re: bacpacjac]
|
Geezer in Chief
Geezer
Registered: 08/26/06
Posts: 7705
Loc: southern Cal
|
I believe the warming plate or priming cup helps ignition in low temperatures. In balmy climes just get the match near the holes and away she goes....
_________________________
Geezer in Chief
|
Top
|
|
|
|
#257557 - 03/13/13 12:38 PM
Re: Penny Stove
[Re: bacpacjac]
|
Carpal Tunnel
Registered: 05/05/07
Posts: 3601
Loc: Ontario, Canada
|
Thanks hikermor! It's good to know what the differences are. This is more than just a 'make camping stuff on the cheap" process for us. It's also a science experiment so we're going to try it both ways. I'm currently on the hunt for a good website for kids to help explain some of the science, so we'll have a better understanding of our own observations. If anyone knows of such a site, I'd be grateful for the guidance.
Edited by bacpacjac (03/13/13 12:40 PM)
|
Top
|
|
|
|
#257558 - 03/13/13 12:42 PM
Re: Penny Stove
[Re: ]
|
Carpal Tunnel
Registered: 05/05/07
Posts: 3601
Loc: Ontario, Canada
|
Well done. Sadly all my liquor comes in glass bottles.....Lol. LOL! I actually bought this beer specifically for this project. Not sure which ends up being better for the environment in the long wrong, but I like the taste out of a glass bottle better than out of a can.
|
Top
|
|
|
|
#257560 - 03/13/13 12:51 PM
Re: Penny Stove
[Re: bacpacjac]
|
Pooh-Bah
Registered: 07/11/10
Posts: 1680
Loc: New Port Richey, Fla
|
Jacqui... once your Scout sees the value of an alcohol stove, a Trangia is a nice birthday present..a lot more durable, doesn't need to be pre heated (at least down here) and the simmer ring allows you to control the heat...
|
Top
|
|
|
|
#257589 - 03/14/13 03:39 AM
Re: Penny Stove
[Re: bacpacjac]
|
Sheriff
Pooh-Bah
Registered: 10/12/07
Posts: 1804
Loc: Southern California
|
Oh, dear, playing with stoves. Tsk, tsk. Nothing good will come of it. Just look at me. The principal of the penny stove is fairly simple. You fill in the center hole with methyl (HEET) or ethyl (drinking) alcohol or a combination of the two ("denatured" alcohol). You put the penny on the fill hole so nothing comes out. Then you "prime" the stove by putting it in a shallow "priming pan" (I use the lid from a tea tin), pouring a little alcohol into the priming pan, and igniting the priming alcohol. Now, here's the science: The priming alcohol heats up the alcohol inside the stove. The hotter the internal alcohol, the more vapor it emits. That vapor needs somewhere to go, but there's a penny blocking the fill hole. The only way out is through the small jets around the rim of the penny stove. The vapor is the only thing that will burn. Liquid alcohol will not burn as is. As the vapor rushing out the jets burns, there's a thermal feedback loop that occurs: heat from the jets warms the stove which warms the alcohol which emits yet more vapor which rushes out the jets where it is burned heating the stove... and so on. It's pretty cool. So, where are the flame shots? HJ
|
Top
|
|
|
|
#257609 - 03/15/13 02:32 PM
Re: Penny Stove
[Re: Hikin_Jim]
|
2
Enthusiast
Registered: 08/31/09
Posts: 201
Loc: Nebraska
|
K--
little confusion- with a penny stove- why would you need a separate priming pan?
after you fill it, just add a teaspoon ON TOP of the penny-
the alcohol on top both heats the alcohol underneath AND ignites the jets once vapor come out.
I know this works on the shorter ones I built....
|
Top
|
|
|
|
#257641 - 03/16/13 11:19 AM
Re: Penny Stove
[Re: bacpacjac]
|
Pooh-Bah
Registered: 07/11/10
Posts: 1680
Loc: New Port Richey, Fla
|
the Trangia has a brass inner wall in the central chamber that conducts heat to the vaporization chamber... I know that it's fun to make the penny stoves, but it's nice to be able to extinguish the flame to preserve fuel...
|
Top
|
|
|
|
#257674 - 03/17/13 09:51 AM
Re: Penny Stove
[Re: LCranston]
|
Addict
Registered: 03/18/10
Posts: 530
Loc: Montreal Canada
|
K--
little confusion- with a penny stove- why would you need a separate priming pan?
after you fill it, just add a teaspoon ON TOP of the penny-
the alcohol on top both heats the alcohol underneath AND ignites the jets once vapor come out.
I know this works on the shorter ones I built.... In cold weather the fuel on top would burn out before vapor starts coming. the Trangia has a brass inner wall in the central chamber that conducts heat to the vaporization chamber... I know that it's fun to make the penny stoves, but it's nice to be able to extinguish the flame to preserve fuel... Just use something to snuff the flame and pour out the remaining fuel.
|
Top
|
|
|
|
#257676 - 03/17/13 09:59 AM
Re: Penny Stove
[Re: LesSnyder]
|
Carpal Tunnel
Registered: 05/05/07
Posts: 3601
Loc: Ontario, Canada
|
the Trangia has a brass inner wall in the central chamber that conducts heat to the vaporization chamber... I know that it's fun to make the penny stoves, but it's nice to be able to extinguish the flame to preserve fuel... Those Trangia's look very nice, Les. I've got one on my wish list. In the meanwhile, we made a snuffer out if the bottom of a third can. It fits perfectly over the top of the penny stove, covering all the jet holes.
|
Top
|
|
|
|
#257680 - 03/17/13 11:15 AM
Re: Penny Stove
[Re: bacpacjac]
|
Geezer in Chief
Geezer
Registered: 08/26/06
Posts: 7705
Loc: southern Cal
|
I hope you are looking at the various types of Trangia cooksets; the stove really works best in an integrated system. My favorite is the Mini-Trangia (T-28). It is perfect for one or two people. It also works well with canister stoves.
_________________________
Geezer in Chief
|
Top
|
|
|
|
#257704 - 03/18/13 09:42 AM
Re: Penny Stove
[Re: hikermor]
|
Carpal Tunnel
Registered: 05/05/07
Posts: 3601
Loc: Ontario, Canada
|
I hope you are looking at the various types of Trangia cooksets; the stove really works best in an integrated system. My favorite is the Mini-Trangia (T-28). It is perfect for one or two people. It also works well with canister stoves. You know, I'm not much of a shopper, except when it comes to outdoor gear. I've been trying to ignore to cook sets but I guess if the burners work better with them... :-) Thanks hikermor!
|
Top
|
|
|
|
#257712 - 03/18/13 01:23 PM
Re: Penny Stove
[Re: bacpacjac]
|
Enthusiast
Registered: 08/03/12
Posts: 264
Loc: Missouri
|
BPJ, Talking of home-made alcohol stoves. I found a few years ago I could quickly drill the outgas holes in the top of the stove by chucking an ordinary straight pin in an electric drill. Re: cook kits. I have used an aluminum pot-pie pan to cook small muffins in the smaller of two cooking pans, suspending the pie pan above the inner surface of the cook pan with a small spiral of aluminum foil. A hiker named "Risk" did a nice write-up of trail baking on his website. www.imrisk.com
|
Top
|
|
|
|
#257943 - 03/23/13 06:26 PM
Re: Penny Stove
[Re: bacpacjac]
|
Carpal Tunnel
Registered: 05/05/07
Posts: 3601
Loc: Ontario, Canada
|
My son and I have made more progress on our penny stove project and turned it into a cook set project! The plan is to make a compact kit on the cheap that we can use to boil water and heat up food. It's also includes a small backup fire kit. We're still working on it but here's how it sits this afternoon: COOK SET PACKED (packed in really big mug along with a spoon) COOK POT PACKED CONTENTS OF KIT COOK POT CONTENTS: -penny stove/snuffer/penny -hobo stove/pot stand/wind screen *repurposed can of corn -lighter -SA matches/cotton balls/pine pitch *in repurposed film -canister -alcohol (HEET) -cook pot with lid/frying pan *repurposed SS sugar canister -bandana -aluminum foil TO DO: -need small bottle for fuel -add some iodine or microPUR tabs -add more air holes and rack in hobo stove -make wind screen for hobo stove -make pot cozy for cook pot -upgrade lighter to butane
Edited by bacpacjac (03/23/13 08:06 PM)
|
Top
|
|
|
|
#257955 - 03/24/13 01:26 AM
Re: Penny Stove
[Re: bacpacjac]
|
Addict
Registered: 03/18/10
Posts: 530
Loc: Montreal Canada
|
Try this design, it's what I followed and works well. It's self priming so no extra pan needed in pretty much any above freezing conditions. http://www.jureystudio.com/pennystove/
|
Top
|
|
|
|
|
|
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
13
|
14
|
15
|
16
|
17
|
18
|
19
|
20
|
21
|
22
|
23
|
24
|
25
|
26
|
27
|
28
|
29
|
30
|
31
|
|
|
|
0 registered (),
570
Guests and
3
Spiders online. |
Key:
Admin,
Global Mod,
Mod
|
|
|