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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.
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.
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:
and the second paragraph on its chemistry and properties starts: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.
In contrast, the much longer current entry in Darcy's links 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.
and goes on to say: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.
You can also read more about Dyneema in the packing cube thread, and my original post linking the old Wikipedia description: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.
Last edited by moriond; 07-18-2007 at 12:32 PM. Reason: Remove repeated section of Quote and add in Tom's quote
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.
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
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
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)
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?
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!