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Re: alcohol stove questions

Posted: Sun Oct 19, 2008 3:55 pm
by oops56
DaddyMnM wrote:I'd be very surprised if you could weld aluminum cans successfully. Aluminum welding can be a challenge in and of itself, but the thin gauge and plastic coatings make it even tougher.

I would think it would be easier to find two cans that nest together well like a red bull energy drink can and a monster drink can. Then cut two complete cylinders, put one inside the other, and roll and crimp the ends together. The stove making tips have tips on both hot and cold roll crimping techniques.
I use jb weld one all my stove none failed yet make sure the paint is sand off both. 1 to1 mix on jb weld make sure you got the hi temp. one

Re: alcohol stove questions

Posted: Sun Oct 19, 2008 3:58 pm
by Ridgerunner
Just a side note on JB-Weld. Make sure you are not using the quick setting kind as it has a much lower temperature rating.

Re: alcohol stove questions

Posted: Sun Oct 19, 2008 8:00 pm
by irrationalsolutions
thanks guys i'll pick some more up tomorrow. i also think i'm going to try to make it with a bottle can. i can take the top part with the neck and turn it upside down in the bottom. the only point a should have to worry about then is the hole i will have to cut in the bottom for the neck to join to. the top should seal easier. it would also allow it to hold more fuel. but im also going to try to get the bugs worked out of the first idea.

Re: alcohol stove questions

Posted: Sun Oct 19, 2008 10:31 pm
by zelph
irrationalsolutions wrote:thanks guys i'll pick some more up tomorrow. i also think i'm going to try to make it with a bottle can. i can take the top part with the neck and turn it upside down in the bottom. the only point a should have to worry about then is the hole i will have to cut in the bottom for the neck to join to. the top should seal easier. it would also allow it to hold more fuel. but im also going to try to get the bugs worked out of the first idea.
What you mean!!!! hole in the bottom for the neck to join to?

Re: alcohol stove questions

Posted: Sun Oct 19, 2008 11:30 pm
by irrationalsolutions
the stove is hollow and the jets are inside it. this heats up the air which makes it flow up. this kinda creates a vacume effect which pulls in more air that is heated and ... you can see the pattern here. my hope is that it helps feed the fire and gets it hotter. this is the only part im not sure about, but with it near the pot my hypothesis is that it will almost work like a blacksmiths forge. using the aluminum bottle i can cut the bottom off at 2 to 2.25 inches then cut the lip off the top of the neck and cut whats left the same length from the top. flip the top part upside down but first cut or drill a hole the same o.d. as the top of the neck in the part i cut off the bottom. then put the upside down top into the bottom of the can/bottle. the pressure alone should seal the top part but add some jb weld for good measure. that just leaves where the top of the neck goes through the hole in the bottom. i still get the updraft effect which is more like a real jet but i like the name afterburner and this should be easier to build and easier to seal up. thats my next plan.

Re: alcohol stove questions

Posted: Mon Oct 20, 2008 5:28 am
by seudo_411
irrationalsolutions wrote:the stove is hollow and the jets are inside it. this heats up the air which makes it flow up.
I saw the video of your stove, it confused me at first but when i thought about the after burner concept it became clear, I would like to make a suggestion, Use a regular, 330ml/340ml can, as the outside can, then cut the base out on the edge of the inner lip of the concave part, so that a 250ml can(redbull) fits in so that you end up with the following, (see image) Image

This will elimninate the need to prime the stove, also, you can vary the height of the stove and the the difference in height between the inner and outer cans.
have a look at Zelphs stove: viewtopic.php?f=2&t=619 look closely at the wick.

I'm not sure if you prefer the stove to be pressurized, but i think the wick might give you better performance. If you want this stove to be an after burner, you might want to consider having a secondary flame going up the center to really draw air in.

Oh and a last question is what size are your jets, cause your flame looks real chunky.

Re: alcohol stove questions

Posted: Mon Oct 20, 2008 11:11 am
by irrationalsolutions
thanks for the ideas, i did use an energy drink can in the center. the top and the bottom of this one are 12oz can tops with the center missing. i think the jets were 1/16 i'll have to check my notes later i was thinking that smaller might work better or fewer they were 1/4in apart. im going for fast boil time first then i was going to tweak it for efficiency.

Re: alcohol stove questions

Posted: Mon Oct 20, 2008 11:43 am
by zelph
irrationalsolutions wrote:the stove is hollow and the jets are inside it. this heats up the air which makes it flow up. this kinda creates a vacume effect which pulls in more air that is heated and ... you can see the pattern here. my hope is that it helps feed the fire and gets it hotter. this is the only part im not sure about, but with it near the pot my hypothesis is that it will almost work like a blacksmiths forge. using the aluminum bottle i can cut the bottom off at 2 to 2.25 inches then cut the lip off the top of the neck and cut whats left the same length from the top. flip the top part upside down but first cut or drill a hole the same o.d. as the top of the neck in the part i cut off the bottom. then put the upside down top into the bottom of the can/bottle. the pressure alone should seal the top part but add some jb weld for good measure. that just leaves where the top of the neck goes through the hole in the bottom. i still get the updraft effect which is more like a real jet but i like the name afterburner and this should be easier to build and easier to seal up. thats my next plan.
I saw the light!!!!!(Your Video on youtube)

Now I understand how your stove is made and how you want to make one out of an aluminum bottle.

An aluminum bottle will take longer to prime. To compensate, lower your jets to just above your fuel level. Using a wick inside to temper the evaporation rate as stated will be helpful. Keeping the jets closer to the fuel will help keep it lit. Make the height of the burner only what is needed to contain 3/4 ounce of fuel. The shorter the better. (less metal to heat up to make it bloom).

Once you get it perfected it's goint to be Super Cool :mrgreen:

Great idea, "Afterburner" sounds cool also :D Nice idea Irrationalsolutions. It's actually "rational" :geek:

Re: alcohol stove questions

Posted: Mon Oct 20, 2008 12:02 pm
by seudo_411
Who is up for a canister Afterburner, Might even get it to roar properly.... :ugeek:

Re: alcohol stove questions

Posted: Mon Oct 20, 2008 12:07 pm
by zelph
seudo_411 wrote:Who is up for a canister Afterburner, Might even get it to roar properly.... :ugeek:
I vote for Daren to be the first :mrgreen:

"Decon Daren makes "Roarer" :lol: :lol: