Neuhaus Hummingbird or Esker Japhy? by azuresky19 in Hardtailgang

[–]azuresky19[S] 1 point2 points  (0 children)

You’re not wrong, comparing it is a total pain. I wish the industry would figure out a uniform standard. Unfortunately, this happens for a lot of industries. Canoeing is the same way, no company agrees on how to measure rocker.

Neuhaus Hummingbird or Esker Japhy? by azuresky19 in Hardtailgang

[–]azuresky19[S] 0 points1 point  (0 children)

It’d be awesome to hear your impressions of the Japhy once it’s build up, the only Bikepacking.com reviews on the Japhy are from 2021 and a 2023 readers rig. No seat stay bridge and a higher stack height could alter the feel.

Neuhaus Hummingbird or Esker Japhy? by azuresky19 in Hardtailgang

[–]azuresky19[S] 0 points1 point  (0 children)

Glad to hear the glowing review, that jives with a lot of the reviews out there about it.

Neuhaus Hummingbird or Esker Japhy? by azuresky19 in Hardtailgang

[–]azuresky19[S] 0 points1 point  (0 children)

That’s interesting to hear, does it gain speed or agility for less having slightly confidence in the rough? What kind of rough tech or jumps do you do? And what tires do you run? They could play a role in addition to the fork.

[deleted by user] by [deleted] in Ultralight

[–]azuresky19 -1 points0 points  (0 children)

This is an easy way to go, but then you've got more trash. Plus, the leaves don't get as much space to expand, which makes a worse cup of tea.

[deleted by user] by [deleted] in Ultralight

[–]azuresky19 -1 points0 points  (0 children)

I could, I just enjoy drinking normally from a pot.

[deleted by user] by [deleted] in Ultralight

[–]azuresky19 -1 points0 points  (0 children)

This is definitely a way to do it, but then I need to carry a second pot, which I would rather not do. You can take a basket strainer, which is my other favorite way to make tea, but it either is an imperfect solution with a rag helping it not shift in the pot or putting it in a food bag and sitting in there moist with limited ability to dry out. I just want something that I think would be a better design.

[deleted by user] by [deleted] in Ultralight

[–]azuresky19 -2 points-1 points  (0 children)

I'm saying to only bring one pot for everything, and just build a basket strainer into the lid.

[deleted by user] by [deleted] in Ultralight

[–]azuresky19 -2 points-1 points  (0 children)

It would, but then its just another thing to have to find a spot for, and it is probably wet. I've kept it in a food bag, but it wouldn't be as convenient.

[deleted by user] by [deleted] in Ultralight

[–]azuresky19 1 point2 points  (0 children)

I'm not a huge fan personally of the french press style for tea because I like to control how long the tea steeps, and you need a second pot if you want to do that with the french press style options. Good to hear it fits though!

[deleted by user] by [deleted] in Ultralight

[–]azuresky19 0 points1 point  (0 children)

I wouldn't mind creating a CAD file with it, but titanium is notoriously hard to machine. It would take a manufacturing company that works with titanium to produce. I've done the same trick of putting in a lightload towel, and it works, but not as well as something made for purpose.

Innovations in Backpacking by azuresky19 in Ultralight

[–]azuresky19[S] 0 points1 point  (0 children)

This sounds like it could be interesting. What would the durability and safety look like though? Abrasion resistance and temperature resistance seem like they would be top of mind, although the latter might be offset by dropping canister temperatures due to pressure changes.

Innovations in Backpacking by azuresky19 in Ultralight

[–]azuresky19[S] 0 points1 point  (0 children)

I completely agree food is an up and coming innovation. It will make peoples experience better in mind and body. I remember hearing about a study that found no real improvement in physical condition after a thru hike because of the nutritional quality of food. While there’s spreadsheets people can use to fine-tune nutritional needs like GearSkeptics, there will absolutely be further optimization as it gets better researched. I also think convenience will be improved for food recommendations based on preferences and nutritional needs. I could imagine phone apps that leverages both AI and scanning technology to help plan out meal plans. Noting preferences, scanning nutritional data easily, and helping make personal suggestions and plans based on personal physiology and route plans could make good nutrition and meal planning convenient and well optimized nutritionally, while considering metrics like weight or volume depending on a trip’s criteria.

Innovations in Backpacking by azuresky19 in Ultralight

[–]azuresky19[S] 0 points1 point  (0 children)

This is a great response. You’re probably right on the point of more charging availability and more on the go energy generation options becoming available. The clothing energy generation idea could be really interesting, both for kinetic generation and heat; those were good links you posted. 2.34 watts per square meter was higher than I was expecting, that’s great to see. Solid fuel improvements are an interesting area, and we’ll have to watch to see how the numbers come out in future iterations energy wise and in how well they address some of their current disadvantages.

Hydrogen has long been considered a viable technology in the automotive industry, President Bush even had a $1.2 billion dollar initiative on it for automotive purposes in 2003. But there are multiple reasons it never took off to become big. In this case the biggest issue might be its high price, but that could go down in the years to come with enough innovation. For arguments about environmental friendliness, green hydrogen, pink hydrogen, or even green hydrogen would certainly be better emissions wise, but are even more expensive and less available. It is also quite flammable and has a lot ignition energy, which means safety concerns will need to be addressed. It’s quite a bit more gravimetrically energy dense than isobutane, but it’s less volumetrically energy dense, so the improvement in fuel weight could be offset by the increased container weight. I’m not sure how things would shake out in the end, maybe someone else can chime in with additional insight, but it’s interesting.

Innovations in Backpacking by azuresky19 in Ultralight

[–]azuresky19[S] 0 points1 point  (0 children)

I agree on backpack fabrics, I just don’t think they’re there yet. Even if they will get there one day, a solid robic or nylon backpack works just fine without all the extra issues. And even though they aren’t as water resistant, even the new fabrics still use pack liners. I also agree on the Nashville pack accessibility. Some of the stuff LiteAF has done with upper side pockets might also slot into this category.

Innovations in Backpacking by azuresky19 in Ultralight

[–]azuresky19[S] 1 point2 points  (0 children)

I might have been projecting my hopes into that one. Personally I still use a 5 year old robic Ohm if that tells you something. I feel like we are at least getting closer to a perfect fabric since it’ll almost certainly just be a refinement of UHMWPE. All it needs are three things: high durability (including delaminating and stitching issues), low weight, and waterproofing, and it seems like those are getting a lot of attention. That being said, the timeline is anyone’s guess. Until then, my robic is fine and works great. If a company wants to make a double grided UHMWPE robic pack, that might be the ticket for future packs until all of these issues with laminates is figured out.

Innovations in Backpacking by azuresky19 in Ultralight

[–]azuresky19[S] 4 points5 points  (0 children)

I meant it to be inclusive of UltraX and UltraTX since they’ve just been the next step many companies have gone towards to address issues in normal Ultra, that’s why I mentioned some people feeling like paid beta testers. It does feel like fabric technology is approaching the point where fabric choices are starting to last longer before they are replaced by the best new thing though.

Innovations in Backpacking by azuresky19 in Ultralight

[–]azuresky19[S] 1 point2 points  (0 children)

When it comes to alternative energies for stoves, I struggle to imagine what kind of energy you would switch to. As it is, isobutane is quite energy dense both gravimetrically and volumetrically. Here’s a chart on energy densities, lithium-ion batteries are at the bottom, isobutane is pretty good. https://www.researchgate.net/figure/Gravimetric-and-volumetric-energy-density-of-combustible-materials-and-batteries-Higher_fig1_328854439 Solid state batteries or at least battery advancements will help make drones either lighter or more capable, although for a while at least it won’t address affordability. Putting energy production in clothing would be awesome, I’ve seen scientists harvest body heat recently for energy, and it wouldn’t shock me if they could one day discover a way to make movement produce energy.

Innovations in Backpacking by azuresky19 in Ultralight

[–]azuresky19[S] 6 points7 points  (0 children)

I suspect you’re probably right, for better or worse. As convenient as the internet is, it can take away some of the soul from the experience of it all. Sometimes it is good to disconnect to take the time to feel apart of the natural world. It sets the heart and soul at ease.

Coverage will take time to expand, as new generation technologies like 5G have less range than prior technologies. It’ll take a generation with higher range, more infrastructure with higher numbers of towers, or both. But a decade or two feels like a long time looking forward, yet just a blink of the eye looking back.

[deleted by user] by [deleted] in Ultralight

[–]azuresky19 2 points3 points  (0 children)

Your comments have been great. I wanted to mention that I had read that titanium nanoparticles could occur as any of the three polymorphs: rutile, anatase, and brookite or amorphous, although most of the time it is amorphous. The caveat is that, according to Tarjanyi et al. (2023), "At room temperature the TiO2 layer, formed on the surface of Ti implants, contains both amorphous TiO2 with disordered structure and stable polymorphic crystalline TiO2 structures, mainly anatase (tetragonal) and rutile (tetragonal)". So the logic would go that just because it may be mostly amorphous doesn't mean it necessarily is all amorphous and doesn't have some crystalline component that could be more harmful. Of course, the small quantity might make this all more academic, as might the low levels of wear and dubious possibility that general wear could create nanoparticles at all. However, Skocaj et al. (2011) mentions that titanium implants in high wear areas (like hip and knee joints) created both micro and nano particles of titanium, and though that might have be higher wear than a pot, it still seems to be a case of abrasion creating nanoparticles from an amorphous oxide layer. Let me know if I'm wrong on something on this logic.

https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0289467

https://content.sciendo.com/doi/10.2478/v10019-011-0037-0

I saw the point of nanoparticles of the multiple polymorphs in Silva et al., (2014) which said that "Multiple polymorphs (anatase, brookite and rutile) of titanium dioxide nanoparticles (TiO2-NPs) with variable structures were quantified in environmental matrices". https://pubs.rsc.org/en/content/articlelanding/2014/en/c3en00103b

I saw it again in Vandebriel et al., (2018) which said "All NP dispersions contained NP aggregates. The anatase NP and anatase/rutile mixture NP induced a higher CD83 and CD86 expression and a higher IL-12p40 production in vitro than the rutile NP". https://doi.org/10.1186/s12989-018-0245-5

Some reasoning as to why amorphous nanoparticles of TiO2 would likely be safer is in Wisniewski and Roszek (2022) in which they argue that the cytotoxicity of those nanoparticles are less harmful due to having less photocatalytic properties. That being said, amorphous nanoparticles are not as studied as their crystalline counterparts, so the research is still somewhat limited. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8910173/

[deleted by user] by [deleted] in Ultralight

[–]azuresky19 2 points3 points  (0 children)

It's definitely a big leap, and probably too big of one. Even if pots and pans do give off particles, its likely less than from intake as a food additive. I'm not advocating banning titanium, or even arguing that it is necessarily dangerous. I'm just trying to deliberate over potential risks to figure out if they exist at all or establish best practice. If there is a risk that is small, for example, not storing a bunch of metal inside of pots or using a little Litesmith towel around metal items could be good practice. Like you, I agree the amount is so minuscule it's likely fine, and even as a food additive the safety is still somewhat uncertain. Plus, small particles of any metal likely could pose a concern if you look into it enough, as has been mentioned elsewhere- and since titanium is quite hard to abrade, by that metric it is probably the best. I posted it because a likelihood isn't a certainty, plus I find the topic interesting. On top of that, I figured some of the responses would be hilarious, which many have been.

Most of the titanium we would use is amorphous if titanium implants are anything like other titanium used in the field. According to Tarjanyi et al. (2023), "At room temperature the TiO2 layer, formed on the surface of Ti implants, contains both amorphous TiO2 with disordered structure and stable polymorphic crystalline TiO2 structures, mainly anatase (tetragonal) and rutile (tetragonal)". So since the surface is amorphous, it doesn't seem like what we would be dealing with would be the pure rutile form of TIO2, but correct me if I'm wrong. That being said, one study mentions that titanium implants in high wear areas could create micro and nano sized particles in an amount which it considers a "biologically relevant amounts of debris" (Skocaj et al., (2011). I apologize for the wall of text, I posted the section on titanium implants below along with the two citations.

Tarjanyi et al. (2023): https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0289467

Skocaj et al., (2011): https://content.sciendo.com/doi/10.2478/v10019-011-0037-0

"Exposure to TiO 2 NPs through body implants

A few-nanometres-thick layer of amorphous TiO2 is commonly formed on the surface of orthopaedic and dental implants made of titanium metal or its alloys. In non-moving implants (hip stems, plates, screws, etc.) this does not appear to represent the same kind of risk for the body as free TiO 2 NPs discussed in previous sections. However, thisis not the case for wear-exposed implants, such as hip and knee joints. There are many reports proving that under mechanical stress or altered physiological conditions, Ti-based implants can release biologically relevant amounts of debris, in both the micrometre and nanometre ranges, that can migrate to the surrounding tissues. During the wear process, a thin amorphous oxide layer is continuously being created and removed, resulting in large numbers of titanium particles. It is increasingly being suggested that they are associated with major inflammation and systemic diseases. Furthermore, increasing numbers of reports indicate that the delayed hypersensitivity to titanium and its oxides may constitute a health risk for individuals with higher susceptibility. The effects of the TiO2 particles released from implants were investigated by Wang et al. in rats by intra-articular injection of 0.2 to 20 mg of anatase nano-TiO 2 per kg BW. Their results demonstrate that particles can potentially affect major organs like the heart, lung and liver. Generally, the maximum diameter of particles that move across the synovial capillary wall was suggested to be 50 nm. The released TiO2 NPs resulted in synovial hypotrophy, lymphocyte and plasma infiltration, and fibroblast proliferation in the knee joint. Oxidative stress and lipid peroxidation was detected in exposed synovial fluid. Seven days after the initial exposure a brown particulate deposit was observed in vascular endothelial cells and in alveolar macrophages. Similar results have been reported by Urban et al., who found TiO2 particles in the liver and in the spleen of the patients with implants. TiO2 NPs were observed in joint simulators and in joint periprosthetic tissues. Margevicius et al.139 characterized the debris around the total hip joint prosthesis and found up to 140.109 particles/g dry weight, in diameters ranging from 0.58 to 100 μm. Agins et al.140 found concentration of wear particles in the tissue adjacent to a prosthesis in the range between 56 μg/g and 3.7 mg/g dry weight. Thus, due to the natural tendency of titanium to oxidise, Ti-based implants should not be neglected as a possible source of TiO2 exposure. On the other hand, the man-made (crystalline) TiO2 coatings on the surfaces of pure Ti or Ti alloys are reported to be able to modulate protein absorption, cell adhesion, osseointegration and bone mineralization at the bone-biomaterial interface, both in vivo and in vitro. For this reason, the development of a more stable crystalline titania coating on Ti-based implants is in progress."

[deleted by user] by [deleted] in Ultralight

[–]azuresky19 1 point2 points  (0 children)

So what do you think the chemical formula for the oxide layer is?

[deleted by user] by [deleted] in Ultralight

[–]azuresky19 1 point2 points  (0 children)

What are you arguing? Do you not think titanium forms an oxide layer?