Keyhole Alcohol Stove Mark I Demo - Great For Backpacking

[srrrr11]

I don't think they are making this stove anymore, they site only shows 2 pop can stoves and 2 cook kits for sale.

[Jhfgsjdcd]

The heat is about 500 degrees blowtorches are 1000 degrees retards

[bolgrats]

Buy!? Looks like a can alcohol burner with a pot stand made out of washers, nuts and bent wire to me...

[ITReviewer]

@bolgrats Most are.

[WAPTek2]

site now redirects to site that lacks this stove :-(

[ArmaHighVoltage]

Nice :)

[boiledrootbeer]

Nice looking stove.

[ninjalrt]

whats the materials: all aluminum?.. 

[clipsesenishi]

@ninjalrt yes except for the potstand.

[ROBERTTHESCEPTIC]

Nice stove! 

[SthealthRaider]

pls make a tut for pot stand :D

[SthealthRaider]

Woot i think how u made the pot stand!

[tesladude19]

i shall attempt to build this design and post a video on my results...

[jonfong57]

How is the pressure regulated? How and where do you fill the stove an dpriming pan?

Thanks

[pastprimitive]

I was giving a highly conservative number since it was a pretty loose method of guessing the exact temperature. But you are right.

[BrokenAeroVT]

My reading suggests that when matter emits orange light, it's an indication of about 1346 deg F minimum.

Google the following in quotes:

"Table 1 gives a summary of visual temperature phenomena of solid bodies"

(Temperatures are tabulated in Celcius not Fahrenheit.)

[mynameistooey]

nice design Andrew will you be posting a tutorial so ultra-light backers can try our hand at building this?

thanks for posting

[BrokenAeroVT]

Don't get me wrong, your stove is a nice design. You have a little heat transfer going on in the pot stand to boil and pressurize the fuel. I just think that your burner might be bleeding off heat somehow, or your tests need to be made with a Heineken pot (or similar weight pot) to be equal in comparison to other tests.

[BrokenAeroVT]

I checked out your site. Are you saying that you burn fuel at the rate of 3.77 ml/min? At 5 minutes, your best time for two cups of water, it takes 18.87 ml.

Most decent stoves I've seen are around 59% efficient. They boil two cups with 15ml (1/2 oz). Yours is about 47% eff at best.

Are you using a heavy pot or a light Heineken can in your 2 cup tests? That could explain the discrepency. Also, is the ground beneath the stove hot? You could be bleeding off heat that way.

[pastprimitive]

The numbers on the site are conservative averages to take into account margin of error, varying cooking conditions, and to make sure that I don't over promise the capabilities of the stove. I have had tests where I boiled 2 cups starting at 70 degrees Fahrenheit in 3:30 min with 15 ml of denatured alcohol, some test went up as high as 5:30 minutes to boil 2 cups, and used 20 ml.

[pastprimitive]

However the most consistent average 2 cup boil time is about 4:20 minutes, using 20 ml of denatured alcohol which burns for a total of 5:50 min.

The type of pot varied for different testing phases. The 3:30 results were obtained with a heineken type pot. The rest were either a heavy gauge aluminum tin, or Steel Pot. The ground was not hot in any of the tests. I hope that helps satisfy some curiosity.

[pastprimitive]

Sorry I meant "the most consistent average 2 cup boil time is about 4:30 minutes" not 4:20. Typo.

[EconoChallenge]

@pastprimitive Anything under a 5 minute boil time is excellent!

[BrokenAeroVT]

Thanks, your info helped me better guage the capabilities of your burner.

[BrokenAeroVT]

I think it would be wise then to set up a 2 cup boil test under ideal conditions (inside, 70F, tap temperature water--about 55-60 deg F) with a thermometer touching only the water using a Heiny pot and wind screen and video tape the whole 3:30 minutes without interuption, including a disclaimer that using different guage pots in various weather conditions or by not following proper set up instructions can yield varying results.

[guns4toys]

Ingenious design!