You should do the test again, but with 2 cups of water in a pan on each to see how long it takes to boil. You've demonstrated that your modification will allow the stove to burn longer, but at what cost? Does it result in a cooler flame? If your modification can bring to a boil first then you've proven real efficiency.

The Trangia comes with a device which will reduce the heat output and increase burn time; it's called a simmer ring.

What I would like to see: a comparison of water boiling times!

The much bluer flame on the modified version tells you that more complete combustion of the fuel is happening, which should obviously lead to better efficiency as well as less sooting on pans etc.

Curuosity and human ingenuity are to be praised even if one can think of an improvement. I bet that half of the commenters suggesting better ways to test, never tried to improve a thing in their whole life. How about a little humility and gratitude to those who do? Great video! Steps clearly explained, burn compared in similar conditions. Blue flame is whzt you want. It is the cleaner amd more efficient burn. You want to see a water boil comparison? Politely ask for one!

Nice work!. But as many others said it would be important to see if there's a difference in the boiling times. They do seem to burn somewhat differently, at least part of the time. If that blue flame is a consistent feature, that would be nice - more efficient burning, less soot. Your mod seems to bring more burning surface at the same level as the jets by wicking alcohol to the surface, which probably reduces the pressure in the jets. That turns Trangia into a more of a surface-burning stove. Interesting, not sure how useful. All that said, the only reason for me to drag around a Trangia set or a burner would be if I'm on a trip where weight doesn't matter much - canoe, cycle touring or car camping. And then a slight difference in the fuel consumption wouldn't matter, as I'd have plenty of fuel. When hiking I wouldn't bother with Trangia at all - there are much lighter options out there, doing the same job. Don't get me wrong - I'm a big fan of Trangia, It's unbeatable for cooking in the wind and for longer base-camp style trips, but it has it's limitations.

According to Google a blue flame is the hottest yellow is the coolest,, I remember this from using Bunsen burners many many years ago

I guess it depends on what you plan to use it for. If you want to cook with it, that may be beneficial (although the simmer ring provides the same benefit). However, if you're just boiling water, I see the unmodified stove being faster. Its flame output was much more vigorous. The modifies stoce may butn longer, but the flame is lower, meaning lower temp for the pot.

The science is important here, this specific burner type has a double wall (small slit on the bottom) and heats the fluid to boiling boiling to gasify faster. This creates the jets. In fact most of the heat comes from the big flame in the middle. The trick is bringing the heat back into the middle, not the sides. This works with air but not a fluid. A real gasifier has a double wall with holes on the bottom sides. and a couple of mm down the inner top, directing the airflow back into the middle downwards. Wood blocks will be gasified and reduced to white glowing ashes very efficiently. To enhance this process a little fan is placed beneath the double wall bottom and (turbo) inserts air into a hole increasing the heat. You can make these gasifiers with standard double wall stainless steel or titanium cups (300 ml) easily. The difficult part is to drill tiny holes into the sides just above the bottom. Piercing it first with some tool is required. If you really want an improved version of the Trangia you just place a small cup with alcohol or denaturalised spirits inside the gasifier just explained above. It will boil water in 3 minutes. Basically (what I am saying) this classic Trangia design has flawed and should have had holes on the inside just beneath the top., idealy directing downwards, heating the fluid with jets of heat. This increases the heat violently and reduces the irregular flame dancing around. It will of course burn for only 5 minutes.

Yes, please do a water boil time test. Also I think the burn time will change with a pot on the burner. Thanks.

My guess is that boil time takes longer, but fuel consumption is reduced allowing you to carry less fuel which helps offset the relative higher weight of the Trangia compared to other stoves. Nice video. Thanks for sharing.

well.. you reduce the heat output to extend the burn time... that means that your water will take more time before it starts boiling and in that longer time you will probaply burn the same amount of alcohol as with the standard burner. On top there is the downgrade, that the additional material takes some volume. So the maximum amount of alcohol inside the burner is reduced by the volume of the steel wool etc. all together not a good trade off imho....

Blue flame means higher efficiency (I know from cental heating boilers). So even if output power lessens you take more btus or watthours from the same fuel quantity. Bravo!! Worth trying. Perhaps there is also no need to dilute with water to get rid of shoot (usually yellow flame gives shoot) so you take even more btus. Also less accidental spillage.

Pity you did not test them under working conditions ie Boiling Water. As the pressure of a pot over the flame would change the characteristics. Thank you for sharing Take care

A bit of a no brainer there? The ‘modified’ has a much better burn, I’d be happier with that neat blue flame every time. Then the burn time is much longer too. Of course there is the question of which flame will be the hottest , so perhaps a boil test is required and to reduce the flame there is a ‘simmer ring’, supplied. So, some great innovation here, but it may be to solve a problem, that doesn’t exist. Great fun though, an interesting vid. Thanks.

so many people making comment about boiling times blah blah blah, when the massive difference is clearly the blue flame, cleaner burner = less soot

I would like to see follow up video comparing the unmodified and modified boiling 2 cups of water test, please.

Zseniális megoldás, alkalmazni fogom, végül is már egyszer bevált a hamutartóból készült alkoholos főzőnél ami csak 9 percig működött.

The real measure of efficiency would be to see how many grams of fuel must be burned to boil a quantity of water. Your modification does have a couple of benefits though. First, as someone else mentioned it reduces the risk of fuel spills if you knock the burner over. However, I have never done that, I guess you would need to accidentally kick it. Second, if you are burning 95% alcohole the flame can be very hot, sometimes too hot and slowing the burn will make things more controllable. I have noticed that if I burn 95% the simmer rings fails to snuff the flame as the alcohol is varporising too quickly and is blowing through the simmer ring. I am guessing your mod would fix this problem.

From my experience in building alcohol stove, it is futile to try besting the overall real world cooking performance of the stock Trangia stove, which is extremely well tuned and fool proof under wide range of condition/ambient temperature; it just works great! Trangia’s only downside is the weight (compare to homemade soda can stove).

👍👍👍 .. very nice .. thank you for sharing. I've been 'mulling' 🤔 for some time now over doing something similar with my Trangia. I have done this with most of my other home-made Alcohol Burners. It also reduces the hazard of fuel spillage. Will definitely give it a go .. take care ..

I will go for this for the cleaner burn, so I can use safer 90% alcohol without much soot build up. Do not thing the boil time make a big difference in actual usage.

I wonder why they use both steel wool and carbon felt.

Wrap the metal filter with the help of a wood without cutting the metal filter and then place other materials inside. it will work more efficiently. the heated metal will vaporise your fuel by transmitting the heat to the al regions. my guess is that it will work more efficiently. I like your work. I will experience it.

Looks like the modified version is burning hotter too. I’m guessing it will bring water to the boil faster. Great tip. I’ll try that too. 👍🏼

這是去年我看CCLand 小島的影片內容 還買了他們家的材料包 實際使用效果很不錯 是個很好的創意，您這影片內容怎麼完全一樣 XD

I like your video. The more efficient blue flame should work better, however a boil test would be necessary to dispel the non believers.

I wonder what the max volume of fluid will be in the modified version ? A standard Trangia burner holds 100ml I believe?

Very interesting modification. As others mentioned I'd also like to see the practical application test visa vis a water boil.

*-10 months and NO follow up video?? Wassaaaap? You are not proving much of anything without testing it's effect on actual boil time!! So much for the scientific method!😮‍💨

This is one cool test fella. What I am wondering if you could do a test with kerosene heaters and make a stainless circular mesh chimney inside the top part of the unit ?? I bet this would happen to the kero heater too. Maybe a video Sir ? Thanks

This looks interesting. It would be good to know how it does for boiling time. Thank you for this and it certainly is something to try😊

I've seen a lid over the big hole in the middle so it only burns from to holes around the rim..the jet holes..

This shows it burns slower. For a measure of efficiency we need something like time to boil a set volume of water.

Mycket bra... från Sverige ❤

While everyone is engaged in discussions about water heating tests, what really catches my attention is the pure blue flame, signaling enhanced efficiency and notably without the irksome soot.I'm also curious about why fire cotton and steel wool are used beneath the mesh at all! I can't help but wonder if it might be more prudent to use stainless steel wire wool, given that the non-stainless version tends to corrode severely when exposed to water or oxygen in general. I'm sure that the heat produced in a stove only accelerates this oxidation, and it likely wouldn't be a pleasant sight beneath the fire cotton in this setup after just a single use. Opting for stainless steel wire wool might be the more sensible choice. Still, I'm uncertain about the precise reason for using wire wool and fireproof cotton! Could it be to establish a more uniform evaporation surface in the fuel pit and also to slow down the combustion process? What would actually happen if you were to use Platinum Embers instead of fireproof cotton? Theoretically, this could lead to an increase in the chemical reaction and subsequently, the heat, wouldn't it?

If there was a way to make their superlative burner more efficient, Trangia would have done it years ago. Stick with what you know and love folks.

How long will the stainless steel last? The black plastic looking stuff attached to the aluminum foil, is it toxic? Will the insides need to be replaced after a specific period of time or usages? Very interesting test. Thanks for sharing. Peace

I can't help thinking that Trangia, as the market leader in these type of stoves would be producing them with this modification if they deemed it an improvement.

Nice. Thank you for your sharing

A great video and a side by side demo thanks for sharing

Is there a reduction in sooting up a pot? A test of water boiling? I would think so, less yellow flames?

Respectfully, this doesn't appear to be measuring "efficiency," which would be the number of BTU's per measure of fuel. This appears to be measuring burn time. Given that the Trangia burner already comes with a simmer ring that extends burn time longer than this test, I don't think any conclusions can be drawn from this test.

reducing burn time doesn't mean more efficiency, all you have done is reduce heat output

I don't care what modification you make the energy density doesn't change it is and always will be 21.1MJ/L. So you haven't improved efficiency you've merely slowed the burn rate.

How does it perform with a simmer cap, say at 1/2 open?

This can burn hot enough to damage the seams of the spirit burner.

Thank you. I am convinced!!

As could be seen from the video, the maximum output is somewhat lower. Also, considering that the trangia has a simmer ring which works very well, this mod doesnt really make that much sense.

Space Heaters? Do the comparison under normal working conditions, eg boiling water.

People are ignoring the fact that the modified Trangia had more of “BLUE FLAME”…..I don’t think you know that a blue flame is also a hotter flame…it boils water quickly….since you can close the Trangia with fuel inside, it makes this much more efficient for boiling or quick heating of food…

Noticeably less heat coming out of the jets on the modified.

Still the same amount of BTUs just at a slower rate!

but what with boiling time???

Is there any risk of explosion after modification?

Might want to play with making your own stoves n learn that longer burn doesn’t mean better. You’re looking for a balance of burn time and heat output. The Trangia has been around for a long time for a reason and the only hotter stove I’ve came across is the Evernew Ti stove. Both have their advantages so one is not really better than the other.

I think a real world test in the wind with two pots of water is required.

Cool good job 👍

I'm thinking if the manufacture could improve efficiency, they would have already.

Interesting.

Why it burns longer?

I'm more interested in that lighter you used

I got mind in 30 minutes

Isn't galvanic corrosion a concern?

nice mode! question any link for this fire retardant cotton tape?

Я не специалист ,но думаю - Не факт ,что тепловая мощность уменьшается из за меньшей подачи топлива. Она может оставаться такой же или даже быть больше из-за лучшего подключения кислорода в процесс горения. Об этом говорит голубой цвет пламени. Почему ни кто не говорит об ещё одном преимуществе- отсутствие копоти.

Genius!

Does the steel wool ignite if you skip the fire retardant fabric? That could be a really hot topic!

Did you ever get round to a side by side boil test? As has been mentioned.....longer burn time, in and of itself, is not necessarily an indicator of greater fuel efficiency. The bluer flame on the modded Trangia is promising but the real test would be comparative boil times + remaining burn time.

This isn't so much about burn efficiency as it is burn rate.

Can i use a fire rope instead?

Hi, The wire wool and carbon felt displace the amount of fuel that can be accommodated within the burner. How is the burn time affected by the reduction in capacity compared to a fully filled unmodified burner? Thank you and kind regards, T😊

wow you just reduce the heat output , yiu realy mr. einstein

Blue flames are hotter than yellow...so you can judge by that

is it reuseable or we have to put new foil everytime?

Unless you actually boil water and compare the times & quantities, you have no way of knowing if it is more efficient. It's quite possible that all you did was slow down how fast the modified stove burns through a set amount of fuel. A waste of time, since the Trangia burner already has this function. Try it again, this time with more water than can be brought to a boil, several liters maybe, measuring initial temperature and final temperature. Rinse & repeat several times to make sure there are no oddball outliers.

請問這個小片的不鏽鋼網要去哪邊買？

Given that the laws of thermodynamics state that energy cannot be created or destroyed, what you have done here is prolonged the time it takes to to burn a given amount of fuel by decreasing the burn rate and btu output of the stove, thus crating a less efficient stove that will take longer to cook or boil anything you put on it.

哇！哥這個是小島套件嗎？效果好棒喔！

Only thing I can see the benefits for this hack / modification is if it ever tipped over. The BTU IS MASSIVELY affected

Have you considered replacing carbon fiber with fiberglass?

Iv looked at this and see what's happening see you put material in and it soaks up more fuel ⛽ so in the long run your not saving any fuel because it takes more fuel to fill it so there ya go don't get me wrong the gauze you put at top is a great job because saves shit from falling in 👍

When you give a simple job to college grad!

Wish I had that felt, where can I find it please help

isnt a blue falme colder, which takes longer to boil

不鏽鋼棉是耗材嗎

請問您使用的燃料是？

Почему ни кто не говорит об ещё одном преимуществе- отсутствие копоти

You obviously have no fire alarm !

❓

这个燃烧测试有失偏颇，得看烧水的效率

Those had better not be your mama’s good scissors. Just sayin’!

Modified is less hot than unmodified... orange flame, blue flame, white flame? Which one is hotter? The white the flame rhe hotter.... orange means more toxic and less temperature of the plasma o flame it also means burning the fuel faster.

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