Відео

BRS 3000T, flame low, Toaks 550 pot, no lid

Seems from my uneducated view, if you are dehydrated, it takes longer to replenish glycogen, then the next day, if you repeat the same strategy, it's harder again and soon your bonked. Does that sound fair? A d a big thankyou, ive been cycling and consumed too much water, so suffered hypo, i always thought it was heat stroke. Also thought urin colour should be clear. Hmmmmmmmmm Again big thank you

Great video! Learned a lot...

great work! thank you very much, hope to see more

I have a question for you. Since backpacks absorb water, since they typically aren't waterproof, can it be said that it's better to carry a backpack cover, which would shed water better? My own rudimentary backyard experiments show that my backpack can gain 20 ounces of water weight, but my backpack cover, which weighs 4 ounces, only gains 2 ounces of water, so that's saving 14 ounces. Obviously, that would only apply for rainy trails like the AT and not so much for the CDT, but am I missing something? I've never seen this addressed. Thanks, love your channel.

That is the best video series about stove efficiency ever. I understand better now the relation between input and output. If I simplify the greater your outputs are the greater your input needs to be in order to raise the temperature of your water. I tested the system on Mont Logan. Usually everybody use liquid stoves, because of the cold temperature and the limitation of the canister stove in those conditions (the gaz in the canister stay liquid and cannot vaporized because of the cold), BUT if you could keep the canister warm enough you could technically use a canister stove. Lot of people tried the copper strip to improve the use of canister in cold, we simply trade the tent for quinzy (snow caves). Inside a quinzy the temperature is around 0'C to -5'C. Which means that a canister stove works without any issues. Doing that we cut half the volume and half the weight compare using a liquid stove like everybody else. This winter I am heading to a 60 day ski traverse on the Hudson Bay, in Canada. We don't want to take the bet of building an igloo every night in order to use a canister stover... So we are bring the good old tent and liquid stove. After watching your serie of videos I was wondering how we could improve our system in order to save fuel ? Because the same principals will apply, the more we protect our system form the output the less input we will need. Thomas Ulrich created a system which is based on the first polar expeditions. Here is the link www.thomasulrich.com/en/polar-shop/stove.html The principal is simple, insulating the pot from the outside temperature to minimised the lost while heating up the water. A system used by Nansen on his polar expeditions. backpackinglight.com/forums/topic/vintage-stove-pot-design-for-frigid-temperatures/ With Ulrich system we can technically save 1/3 of the fuel compare to normal system (These days, pretty much everybody use MSR XGK stove, on polar expedition). But here is my question... (sorry that was a long introduction for a short question). Has the XGK is a really powerful stove that cannot be dimmed down. Would it be possible, with Ulrich system or something similare, to used a less powerful (or more adjustable) stove like the MSR dragonfly in order to save even more fuel ? Long polar expeditions (40 to 70 days) are using a lot of fuel and it would be awesome if we could use the results of your research to create an ultralight system for those adventures. p.s. a Part 5 on stove efficiency about the impact of the cold would be great (like real cold 0F to -20F at least). Thanks for your work.

28:54 this just tickles me to watch! So fun.

Given your results, the new Fire Maple G2 (750ml) pot should outperform the Petrel G3 since it is wider. If the Petrel does as well in your wind test as i expect, you might consider testing the G2 pot.

I learned years ago that a wide pot captures more heat with an alcohol stove, which cannot match a canister stove in btu output.

I use a homemade alcohol sit-on-top stove with an Evernew 1.3 liter titanium pot and a titanium windscreen with about a 1/2" Gap all around. I use a piece of aluminum oven liner cut to the size of the pot bottom as a way to prevent scorching of picnic tables and shelter floors. I would usually achieve a 2 cup boil in less than 5 minutes on a bit more than 1/2 a fluid ounce of denatured alcohol in every temperature above freezing. Wind had very little effect at higher temperatures, but much more at lower temperatures. I used that system for 1,100 miles on the Appalachian Trail last year. Not very scientific, but being able to boil water with a small cat food can and eco-friendly alcohol is enough for me to have stuck with the system for 20 years.

I am learning and teaching physics right now. This is so much fun. I am having my student watch ALL your videos. I could listen to you ALL day! 🤓 Thank you for taking the time and sharing with us.

It is fall! I say again, it is fall! We all want to see wind tests. On the Petrel maybe you can do a test with the stand on the bottom of the heat ex changer (not in the intended slots) to increase the distance from the burner? Thanks for nerding out! 😊

Bro, you are a saint. I thought I was pretty good at calorie dense food packing and you just schooled me. I've been packing way to much carb/ sugar

Great video! The sound effects were awesome, well done.

Can you test decatlon forclas mt 900 it is around 50 grams with some wind protection-if you are down to test it i will pay for the stove!!!!!!!!!!!!

Bravo!

Great analysis, thank you. Have you reviewed the best water prefilter, ie. Millbank, Helikon-tek, Pentek, coffee paper filter, cotton cloth?

Watched with great interest and took notes! No mention, though, of how often to partake of trail fuel during a hike…is the goal to directly replace calories lost? If so, is that best to do every hour, four hours, end of the day?

Hey, would it be possible to add the Firemaple G2 Petrel 750ml pot? It's 22g heavier, but I really prefer slightly bigger pots. Thanks for the great videos!

thanks dude, i learnt a lot, i teach survival skills and my go to, is,,, all ground water must be boiled. now Ive learnt something new, along with shrimp eyes, crab eyes and fish eyes as indicators for water temps. saves me in my alone time in the Aussie bush, well done sir....and yes, i have all of the items form making water safe, now i can cut down....

Man, Thank you so much for doing all this test. It’s Impressively HELPFULL. I wish you got a nice day 😊❤

Great test but if you go for aluminium of stainless steel you reduce the cooking time even further. Titanium is not the best of heat conductors.

Working at a power plant we found the pain threshold to be holding a fingertip on a 120 degree surface to be a good rule of thumb. If you could hold your finger on it, it was below 120. If you had to just tap it, it was over 120. Ish.

Solid scientific testing! Would love to see data with aluminum and stainless steel pots included in the test

For the first time ever someone is better at providing answers than I am at asking questions

My sawyer squeeze got really drippy and slow in the offseason, and my treatment was: backflush with water and vinegar, soak in warm vinegar water for 1-2 hours, the a half dozen hard backflushes with warm water and it was flowing like new again. I did use the syringe, i use the bottle method in the field(with a squeeze bag).

Can somebody please give this man an oscar

One thing that would be a way to increase heat transfer is via phase change as in condensing and evaporation but the orientation of cold and warm side in opposite to optimal but when you lie on a pad not all of the top is covered it could conceivably condense on top then roll down to where you load the pad (or if there's some fillin by capilart action) and it's lower then increased evaporation due to heat and then condensation on the cold parts. But that's just possible mechanism. It's impact would have to be measured and would vary by humidity levels and temperature delta etc. Personally I haven't felt any difference between sel inflating and 3 breaths to inflating with breathing alone to get it inflated fast 😀

Great tests! Very interesting! Have you compared aluminum pots vs titanium pots? That would be a interesting comparison 😀👍

Love your work!

I imagine aluminiun cookware would give even better efficiency since it's way more heat conducting.

Hi, hopefully this doesn’t sound picky. Is it possible for you to fix the play list so Part 1 is first then Part 2? It would flow better when I hit the play all button. Thanks again for all your work on these videos. It’s greatly appreciated!

So much good information here, thank you for your work. But the errors are here as well as in the previous video: Dietary fibers should not be included as carbohydrates, as they are indigestible. The results and the score for many products are skewed. Not deducting the fibers, the score have gone up for foods that contain a lot of grains especially, and they look better than they are. Some items should probably be in a lower class.

Fantastic video! But it seems like there are errors in the calculations. Dietary fibers should not be included as carbohydrates, as they are indigestible. I looked at the nutritional values for some bars at least, and for all of them the total weight of carbohydrates had been used in the calculations, without deducting the fibers. This will lower the score quite a bit for many foods that contain a lot of grains especially, making the difference to more fat-rich foods even more pronounced. Other than that I'm surprised pemmican wasn't mentioned. (Or did I miss it?) I believe that in practice this is the very lightest food, since most people seem to be able to eat a proportionally large amount of it per day - more so than you could with the very few things in the lists that score higher. (Pemmican have about 5.75 kcal/g.) You don't see people eat a jar of peanut butter everyday for example, while eating the same amount of energy - or more! - in the form of pemmican is common among those that use it. (Or do people actually eat this much peanut butter? I would guess eating say one to two jars of peanut butter every day for two weeks will cause problems for your digestion. Or can you get used to it?) Pemmican is not much like any other food however, so don't let prejudice and lack of experience straight away affect your judgement if you try it. I found it really good and tasty when I got used to it.

I just stumble on the videos and all the great excel data, awesome! Now that a dietitian has bless this, just makes me more impressed. Thanks to all as at 64 I'm just getting into backpacking and this info is soooooo helpful, cheers!

Not scientific, but I’ve been using Grayl GeoPress for a few years now. I’m residing in a developing country so I filter all drinking water. What I’ve noticed that you can check the filter degradation by blowing air through it. When the filter is new, no air passes through. When it starts to degrade after months of heavy use, more and more air starts to pass through. When you replace the filter its up to the user of course. Thank you for the videos.

Spannende verhalen met Roy 😅

I’m learning so much by watching your videos, thank you.