I think leather will be okay. But it is necessary to skim its edge. And sorry, I don’t distribute the pattern for any purpose at this time.

Thank you for your comment! I haven’t researched it in detail. They seem to be released from the shoulder load, but in compensation, users need their trunk inclined to stable the position of the center of gravity of the upper body and pack. Also, their neck motion should be restricted.

@@BackpackResearcher check Yvon Chuinard from Patagonia has a nice article about it. Colin Haley also uses it for heavy loads of non technical terrain, and is able to remove the backpanel frame too.

コメントありがとうございます。家庭用ミシンですと厚みのあるものを縫えないと思いますので、例えばショルダーストラップにテープを縫い付ける際に、パッドを全て貫通して縫うのは難しいと思います。テープを先に表の生地に縫い付けてから縫っていく等、工程の工夫がいると思います。 このバックパックは型紙を公開しておりませんので、心配でしたら型紙のある市販のMYOGキット等で練習されても良いかもしれません。

Please check the playlist! DIY/MYOG kzbin.info/aero/PLiGQHObsTBFbTNQ1roD5MptR0pNkpqueW

Thank you for your comment. The curve of the shoulder strap end did not depend on engineering, but just my preference. Then, regarding the panel core, if you want the back gap for ventilation, the panel needs stiffness in the vertical direction. If you use only a plastic sheet for the panel core, it might be bent when you put heavy stuff in the bag.

Please check this video! kzbin.info/www/bejne/gJKQdaCaaZKpeassi=jJecHjiOGoj8vIV3

コメントありがとうございます！ 基本的に縁巻きは一番最後のボロ隠しの工程ですので、パーツの縫製はその前に行っています。 そして、上部ベルトと下部ベルトの芯材を閉じ込める工程、メッシュの上端と下端に縫い留める工程等、目的毎にそれぞれの工程を組んでいます。 もちろん複数の工程を一つにまとめられると時間短縮になりますが、失敗するとバラバラになったりしますので、ここでは一つ一つの作業をご紹介しています。

@@BackpackResearcher 返信ありがとうございます！ 自分は今自作のバックパックを作ろうといろいろと画策中です。 ショルダーハーネスやヒップベルトが複雑な形状だった場合、袋を作って裏返し、芯材を入れる工程が難しそうだと思い、外からまとめて縫う方法を調べておりました。 縁のテープは固定用ではなく、あくまで縫い目や生地の境目の保護なのですね。 加えて質問なのですが、フォームパッドやウェビングテープを家庭用ミシンで縫うのはやはり厳しいでしょうか？

縁巻き仕上げの場合、縫い代分フォームをオフセットした型にしてあげる必要がありますので、裏返すやり方の方が簡単だと思います。 家庭用ミシンでは分厚いフォームが入った状態でウェビングを貫通縫いするのは難しいかもしれませんが、表の生地だけの時に縫い付けておけば作ることは可能です。 テンションが掛かるのが心配でしたら、生地の裏側に別の生地やウェビングを当てて縫い合わせる等の補強をしても良いかもしれません。ぜひトライしてみて下さい。

Thanks! Please check this video. m.kzbin.info/www/bejne/gJKQdaCaaZKpeas

Thank you!

Thank you!

Thank you for your comment. I hope my videos will help your creation of hiking gear. If you make your products based on my videos, you should identify the source of your citation as manners. And regarding reprint, I'm not willing to release my videos on the other platforms and not willing to allow them to be used outside of KZbin at the moment.

@@BackpackResearcher Thanks for your reply and thanks again for sharing!

Thank you for your comment. It encourages me a lot. I believe that published research results become really valuable when they are known and used by many people. In addition, person who estabulished a method, can create any number of new products if constraint conditions change. The important thing is not to do guard information, but to develop technologies or products that help people and make an impact on the world. To achieve that one day, I will continue it. Thanks!

Thank you. I'm honored if my videos could be useful for your creation.

Thank you for your comment. The polyethylene piece was used for a core to hide the gap between sewing margin of shoulder straps and middle of the back panel. If I sewed it with only a fabric part, the shape of sewing margins of shoulder straps would have appeared on the surface because the margins were thick.

Thanks for your comment. Yes, the distance between fingers and the blade should be shorter. So, would you tell me your recommend hot knife brand and model number? I want to handle it like pen or cutter.

@@BackpackResearcher I use hsgm heißschneider hot knife, bought it many years ago after researching the American DIY tactical gear forum. It never failed me

Thanks for the information. I have checked it before I bought. The ways of holding are ergonomically different between these two types. In precise work, it would be better to hold the knife with the index finger and thumb like pen or art knife. And cut a workpiece by moving the fingers and wrist. So, in Japan, the pen type is more common for hot knives. There seems to be a demand for plastic model cut. Regarding your recommended model, I think it is suitable for rough and heavy work, or wide area work because it cuts a workpiece due to moving the wrist and upper arm. These are as different as art knife and heavy duty utility knife. So, I selected former one. If I cut ropes, I will select your recommended type. It depends on individual preference. I hope many viewers who are considering whether to buy will watch this exchange. Thank you for your watching and comment, again.

Thanks for your comment. Please tell me the time in the scene.

@@BackpackResearcher Its 8:36

Thanks. As you mentioned, it can tear horizontally depends on cut. It actually occurred when I was making. So, I did that treatment resorting to a sure means. Today, I asked a sample maker about this. He said he doesn’t do that. But I asked a person who is in charge of production management of a factory, and he said it does heat cut velcro for the purpose of both cutting and fray stopping. So, you can decide to do depending on whether you care about it or not.

とんでもないです。こちらこそ出来ることの幅が広がりました。ありがとうございます！😆

Thank you!

Thank you for your comment! Sorry, I don’t think of releasing patterns for now. But if you have a question while making, I can advise you!

​​@@BackpackResearcher Okay i understand. Can you give me a tip for polyethylene sheet substitute? Especially, for the back part of backpack? It's hard to get the sheet in my area.

@kisahrafa2296 If you can’t get PE foam sheet, you can use other closed-cell foam sheets for substitutes. Its hardness and stress-strain properties are important. You should choose a desirable material while touching various materials or applying them to your body.

Your comment is very encouraging for me. Thanks!

Thank you for your comment. It’s a foam sheet ordinary used for the bottom core of bag. But a solid sheet is also okay.

Thank you! I made a tall type recently. I will make this movie later! instagram.com/p/CyM2MyiPY6t/?igshid=MzRlODBiNWFlZA==

Thanks for your comment! The experiment was so tough! I’m so thankful for their cooperation.

ありがとうございます！ 熊の生態は全然詳しくありませんが、なぜこの場所に出たのかよくわかりませんでした〜😅

Sorry, I haven’t released them, because I don’t want them used in commerce.

コメントありがとうございます！励みになります。 この動画はiPhone12Proでfilmic proというアプリを使って撮りました！

@@BackpackResearcher お忙しいところ、お返事ありがとうございます。早速ダウンロードしましたが、これは基本的なカメラの理解が必要ですね。 アップされている動画は4kですか？

2kで撮っています。 元々は、蛍光灯の下で撮影することが多いので、フリッカー対策でフレームレートを50fpsに設定するために導入した感じです。

ありがとうございます。最後に一つだけ聞かせて下さい。 編集ソフトは何を使われてますか？ 調べたところ、アプリならLumaFusion 、 長い目で見て、スキルを高めていくならAdobeのプレミアかと思っております。（動画編集初心者です）

PC購入時に付いてきたPowerDirectorを使っています！一部の機能しか使いこなせていません… こだわり出すとキリがないので、編集に納得できないものは後に消すことも考えて、少しでも早くアップすることを優先しました。

So is there a pattern?

You comment encouraged me greatly. Thanks! Regarding the patterns, I haven’t released them, because I don’t want them used in commerce. Instead of it, I will advise if you have a problem for your making.

@@BackpackResearcher ok thanks very nice work

Thank you for your comment. I don’t know your concrete design. What is it aimed at? The pad shape and thickness have some effects; load distribution, making a gap for ventilation, less interference with upper arm motion, and etc. And a preferable design should differ its purpose. Regarding the load distribution, please check below as a reference for the pad design. kzbin.info/www/bejne/b4ulknWMfsxrbZY

Is it a suspended-load backpack? I think that the original purpose of this type is to convert the dynamic oscillation load into the vertical component with slide mechanism and then, to generate electricity to reduce battery weight for communication equipment in military. So, the slide device is too heavy itself and in static situation, user supports extra weight for it. If you take its benefit of load reduction, you have to keep moving.

@@BackpackResearcher no, i think it USES electricity. it's called the hoverglide. the backpack "floats" it's mid air so that you have a constant load on you rather than an oscillating up and down load

On the other hand, in my invention, the weight of the movable lumbar pad is about only 250 grams. And in both static and dynamic situations, it distributes the backpack load to the lower back and reduces shoulder load.

It doesn’t use electricity, but it is derived from the technology for an energy harvesting backpack. Check below. www.hoverglidepacks.com/our-story www.nature.com/articles/4441023a

​​@@BackpackResearcher ah, yeah, i guess i was wrong. that's pretty cool that it doesn't need electricity. your invention is pretty cool too, but the hoverglide seems more comfortable. your invention has good load distribution, but i assume the load distribution would fluctuate when you're running (although the fluctuation would be less than a normal backpack). i'm not hating. i think your invention is great!

Haha! Thank you! I really investigated about backpack load reduction methods and released the results as research papers. I’m glad if the contents satisfied you.

Thank you for your comment. Shoulder straps adopted two layered foam for the core. And regarding the hardness of foam, I have already replied for someone’s question in shoulder strap making video. Please check the video! You can also know how and why about it.

Thank you for your comment. If shoulder straps and back panel are exchangeable, they can demonstrate their performance whenever users use any pack bodies. And I think that MYOG is the best way to realize the gear specs that match user’s body shape or taste of fitting.

@@BackpackResearcher exactly my thoughts. The back panel/pack just replaces the back shoulder straps that are used only when the lumbar belt is in use without any pack

Adler 69 made in Western Germany

Thank you! Your words have given me so much courage. And I wish this technology will help backpackers in more severe field such as mountaineering. I will keep investigating it from now on!

Hi! My Adler model is 069-72/E43.

@@BackpackResearcher Thank you for your reply

Wow, are you an engineer or something? I want tell you that this pad doesn’t need a rich form pad for hip belt. When you want to distribute the pack load to the lower back more, it only needs drawing the pack to your body. So connecting a thin, rather flexible, belt to this lumbar pad, you can experience more comfortable carrying!

@@BackpackResearcher Not an engineer but I enjoy making my own gear, and Ive been following your work for sometime. And thanks ill keep it in mind and planning my next bag !

@@BackpackResearcher Does this mean: the pad is held tighter to the body with a hip belt OR the hip belt should pull the pack closer to the body? Would this not restrict the pads ability to move?

@sim-pit It meant both. I think that the hip belt is to properly fasten the backpack to the user body. And the lumbar pad works for its interfacial treatment between the body and pack to transfer the load. By the sliding and rotating mechanism, this movable pad made keeping pack position and not interfering walking motion compatible.