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New: Ruck's Sac Backpack (Available July 4th)

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    #16
    Originally posted by Darcy View Post
    I just took my Ruck's Sack on another hike last weekend. It's a great little pack.

    What I really want next is a Dyneema Cafe Bag! Wouldn't that be cool? I think so. Especially in the hot Summer: the Dyneema is so light.
    hey darcy,

    can you describe what dyneema fabric is like? i'm not sure if i may have come across it in any of my bags.

    thanks,
    maverick
    -m

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      #17
      Originally posted by Darcy View Post
      I just took my Ruck's Sack on another hike last weekend. It's a great little pack.

      What I really want next is a Dyneema Cafe Bag! Wouldn't that be cool? I think so. Especially in the hot Summer: the Dyneema is so light.
      I'd bite on a dyneema cafe bag. That would be funky.
      ha! you just read my signature.

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        #18
        Originally posted by Darcy View Post
        I just took my Ruck's Sack on another hike last weekend. It's a great little pack.

        What I really want next is a Dyneema Cafe Bag! Wouldn't that be cool? I think so. Especially in the hot Summer: the Dyneema is so light.
        Darcy you are in the best place to ask for a Dyneema Cafe Bag and great idea by the way.

        Comment


          #19
          Well....

          Ok, to be honest at first blush this is the first TB bag I don't really like the look of. The square flat flap and square pocket on the cylindrical bag just doesn't do it for me. I like the pocket in the flap and all, but the whole thing kinda bothers me.
          I am sure it is functional and works with the drawstring, but a larger flap or different shape would make it more cohesive.

          I do respect the fact that all the designs are always fresh and new.

          Comment


            #20
            Originally posted by thax View Post
            Ok, to be honest at first blush this is the first TB bag I don't really like the look of. The square flat flap and square pocket on the cylindrical bag just doesn't do it for me. I like the pocket in the flap and all, but the whole thing kinda bothers me.
            I am sure it is functional and works with the drawstring, but a larger flap or different shape would make it more cohesive.

            I do respect the fact that all the designs are always fresh and new.
            hehe that square flap is the most appealing feature to me :P

            Comment


              #21
              Originally posted by mrae View Post
              Can you post some pictures showing the inner colors and how they look with the outer one?
              We'll try to do this soon.
              Have a question? @Darcy (to make sure I see it)

              Current carry: testing new potential materials in the form of Original Large Shop Bags.

              Comment


                #22
                Originally posted by maverick View Post
                can you describe what dyneema fabric is like? i'm not sure if i may have come across it in any of my bags.
                Dyneema is what we make the Packing Cubes out of. You can read about it in Wikipedia.
                Have a question? @Darcy (to make sure I see it)

                Current carry: testing new potential materials in the form of Original Large Shop Bags.

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                  #23
                  Dyneema

                  Originally posted by Darcy View Post
                  Dyneema is what we make the Packing Cubes out of. You can read about it in Wikipedia.
                  I actually prefer the original Wikipedia Entry for Dyneema given on the Tom Bihn web pages about a year and a half ago. It's more succinct for lay readers. For example, it begins:
                  Dyneema® is a synthetic fiber based on UHMWPE, 15 times stronger than steel and up to 40% stronger than Kevlar. It is usually used in bulletproof vests, bow strings, climbing equipment and high performance sails in yachting. Dyneema® was invented by DSM in 1979.
                  and the second paragraph on its chemistry and properties starts:
                  Dyneema fibers derive their strength from the extreme length of each individual molecule. The fibre can attain a parallel orientation greater than 95% and a level of crystallinity of up to 85%. In contrast, Kevlar derives its strength from strong bonding between relatively short molecules.
                  In contrast, the much longer current entry in Darcy's links starts:
                  Ultra high molecular weight polyethylene (UHMWPE), also known as high modulus polyethylene (HMPE) or high performance polyethylene (HPPE), is a thermoplastic. It has extremely long chains, with molecular weight numbering in the millions, usually between 2 and 6 million. The longer chain serves to transfer load more effectively to the polymer backbone by strengthening intermolecular interactions. This results in a
                  very tough material, with the highest impact strength of any thermoplastic presently made.
                  and goes on to say:
                  UHMWPE is a type of polyolefin and, despite relatively weak Van der Waals bonds between its molecules, derives ample strength from the length of each individual molecule. It is made up of extremely long chains of polyethylene, which all align in the same direction. Each chain is bonded to the others with so many Van der Waals bonds that the whole can support great tensile loads.

                  When formed to fibers, the polymer chains can attain a parallel orientation greater than 95% and a level of crystallinity of up to 85%. In contrast, Kevlar derives its strength from strong bonding between relatively short molecules.
                  You can also read more about Dyneema in the packing cube thread, and my original post linking the old Wikipedia description:
                  Originally posted by moriond View Post
                  There was a great link to the Wikipedia Entry for Dyneema given on the Tom Bihn web pages over a year ago. A few weeks later, the Wikipedia folks changed it to this entry on Ultra high molecular weight polyethylene (on the grounds that Dyneema was a brand name), and the link disappeared from the Tom Bihn pages.

                  I thought this was pretty interesting reading at the time, and may reinforce Tom's comment about:
                  Weighs next to nothing, yet the Dyneema fabric makes it close to slash-proof.
                  with some background information. Just something else for you packing cube enthusiasts to obsess over! (Time travel back to the original Dyneema entry courtesy of the Internet Archive Wayback machine.)

                  A brief history of Dyneema fibers is also given at this Australian web site
                  Last edited by moriond; 07-18-2007, 11:32 AM. Reason: Remove repeated section of Quote and add in Tom's quote

                  Comment


                    #24
                    Originally posted by moriond View Post
                    I actually prefer the original Wikipedia Entry for Dyneema given on the Tom Bihn web pages about a year and a half ago.
                    Thanks for posting that, moriond!

                    I can't remember removing the Dyneema Wikipedia Entry link from our site, but maybe I did at some point.

                    Someday soon we'll have our own materials glossary on the TOM BIHN site where we'll provide succinct definitions of the materials we use and links to more detailed definitions.
                    Have a question? @Darcy (to make sure I see it)

                    Current carry: testing new potential materials in the form of Original Large Shop Bags.

                    Comment


                      #25
                      Originally posted by Darcy View Post
                      Thanks for posting that, moriond!

                      I can't remember removing the Dyneema Wikipedia Entry link from our site, but maybe I did at some point.
                      If you did remove the link, it was because the Wikipedia entry may have been inaccessible. When Tom posted or referenced the Dyneema link, the discussion page for the entry at the Wikipedia site already showed objections from some people at having a separate entry for a brand name and arguing to subsume the entry under a UHMWPE entry. About 3 weeks later, the separate Dyneema entry disappeared, and I think the link to the Wikipedia on the Tom Bihn page got deleted. Later on the Wikipedia link to Dyneema worked as a redirect to the UHMWPE description. I recall seeing the Dyneema links again in the product descriptions.

                      I just fetched back the link that Tom first pointed us to, because I found it clearer.

                      moriond

                      Comment


                        #26
                        i bought mine recently! ^_^ i really like it for a number of reasons. the straps fit my shoulders great (a big plus because i have never had a backpack that fit me) and i love the design.

                        thanks, guys! i have been recommending you to my customers as well as my friends when they start talking about laptop bags. =D

                        Comment


                          #27
                          Dyneema Cafe Bag! Yes

                          Originally posted by Darcy View Post
                          What I really want next is a Dyneema Cafe Bag! Wouldn't that be cool? I think so. Especially in the hot Summer: the Dyneema is so light.
                          Sounds just like what I need for birding trips - book and binoculars. Please add this to TB's ever lengthening to do list!
                          Another happy owner of the Aeronaut, Sm & Lg packing cube, convertible packing cube, Absolute packing strap. Also travel with Ballistic Imago w/2 sm organizer pouches and style kit. Swift with extra key straps, organizer pouches and my quarter packing cube. Holiday Med. Ultrasuede® pouch, all 3 sizes of Stuff Bags, various key straps. I love them all!

                          Comment


                            #28
                            Dyneema Cafe Bags and Dyneema Questions.

                            Originally posted by Darcy View Post
                            What I really want next is a Dyneema Cafe Bag! Wouldn't that be cool? I think so. Especially in the hot Summer: the Dyneema is so light.
                            Maybe a Dyneema strap with poron insert too. Though because of the properties of Dyneema, I think it may have to be sewn in place, and a tie/fold-upon-itself system used for setting length as sliders wouldn't find purchase to bite?

                            Any developments on a cafe bag in Dyneema, Darcy?

                            Does anyone know if there is clothing available made from Dyneema? I have seen via Web search some body armor and gloves that use Dyneema as a component, but I want a wind breaker. I wonder if there are any bespoke/custom tailors that use Dyneema?
                            Bags: Latest: Pop Tote and Shop Bag (large) ; also have a Co-Pilot, Super Ego (w/cork seatbelt); Aeronaut; Medium Cafe Bag; Large Cafe Bag; Brain Cell; Shop Bag small, (Steel); Packing Cube Shoulder Bag. Accessories: Oh yeah, bunches.
                            Sadly Lost to Hazmat: An Imago in Steel/Cork & MCB in Linen/Olive.
                            " ...all [that] you have to depend on is yourself and your luggage." - The Luggage Salesman (Joe Versus the Volcano)

                            Comment


                              #29
                              What's up with the Ruck's Sac? According to its web page, it is now down to being available in one exterior color (Olive). I had inquired about it, and it was said to be unavailable in Sapphire exterior. (I was interested in Sapphire.) Does this mean that the Ruc's Sack is being phased out, and the colors are not be replenished, or will the other colors be available sometime down the road?
                              Owner of: Brain Bag backpack (Black), Field Journal Notebook (Blue), Snake Charmer (Small, Orange), Super Ego briefcase (Black / Indigo / Steel) with Reflective Strip, Brain Cell (Steel), Horizontal Freudian Slip, various Organizer Pouches and Key Straps, and a Side Effect (Black / Wassabi) worn as a belt-style hip-pack.

                              Comment


                                #30
                                I was hoping to order 2 Ruck's Sacs after the first of the year -- this thought makes me very nervous! PLEASE don't discontinue this bag!!
                                Ego in Black, Steel, Wasabi, Empire Builder in Black, Black, Sapphire (Husband), 2 Brain Cells (Black), 2 Medium Cafe Bags - 1 in Black, Wasabi & 1 in Navy, Cayenne, 2 Large Cafe bags w/Absolute Straps - 1 in Linen, Olive and 1 in Cocoa, Wasabi, Guardian Dual Function Light & Lots of pouches!

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