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  1. #11
    Senior Member JerryW's Avatar
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    From all of the usual suppliers, I've never seen anything lighter than 1 oz/sq.yd. offered for sale by the yard. 1.1 is the lightest affordable ripstop that I know of.

    I'd definitely try some .25 if it was available, breathable and reasonably priced.


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  2. #12
    Senior Member questtrek's Avatar
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    Quote Originally Posted by Bleemus View Post
    BTW, I am not trying to be a smart*** here. I just find it odd that we have UQs built from the same fabric as hammocks while one is load bearing and the other isn't. All you need in an UQ is the ability to keep the down from flying away right?
    You do that and market a great product that's trusted .. I am all for it! ... Top notch product with great quality and durability is what everyone is looking for and if you can do it with a lighter fabric ... more power to ya ... let's see when your done .. can't wait to see the photos ... of your first! .. I'm sure everyone here on HF ... would love to see too.
    Questtrek
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  3. #13
    Senior Member Trooper's Avatar
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    Quote Originally Posted by Bleemus View Post
    Oh crap. You figured out my whole marketing scheme in one email. Dammit!
    Some things are easy to imagine. But most people don't have the time, capital, or skill to actually make and idea reality--let alone manufacture. It sounds like you have the right mix and I'll be impatiently waiting for your lighter UQ's.

  4. #14
    Senior Member Albert Skye's Avatar
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    Quote Originally Posted by Bleemus View Post
    We used to make light air spinnakers with .25 ounce nylon. Since it is not subjected to extreme wear, is not under load please tell me why you are building with what we used to use for heavy air spinnakers.
    Mont-bell uses 15- and 7-denier fabric on some of their products. I'd like to find a source of that or similar fabric.

    In any case, I wonder if you are referring to the strange (because I don't understand how they work) industry weight designations. For example, "0.75 oz" actually weighs 1.1 oz per sailmaker's yard, and 1.4 oz per square yard, according to this article.

    Also, I suspect much of the 1.1 nylon ripstop fabric is inferior to that used for making spinnakers (especially that which comes without specifications from unknown sources).

  5. #15
    Senior Member GrizzlyAdams's Avatar
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    Like others I'd be interested in learning more about this micro-light nylon fabric.

    I have made a differentially cut under-quilt whose hammock side is made of 0.33 oz/sq yd cuben. Doesn't breath---that's one of the attractions actually---keeps all body moisture out of the down. I'm thinking about making another that is almost all lightweight cuben, except for some strips of breathable nylon to let air in and out. Last year I did some small scale experiments that verify such an approach ought to work, and later I saw this web-page describing an over-quilt that does exactly that.
    Grizz
    (alias ProfessorHammock on youtube)

  6. #16
    Senior Member Ramblinrev's Avatar
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    One thing that has not been brought up but is crucial to the manufacturing of down gear is very simple. Is the fabric downproof? In my estimation the ultralight fabric may have more of a problem being downproof than a heavier fabric. The only basis for that statement is my own experience with down gear. I don't know if it is true or not. But you obviously don't want the precious down escaping through a very thin weave regardless of how dense it is. Windproof and downproof are two very different things.
    I may be slow... But I sure am gimpy.

    "Bless you child, when you set out to thread a needle don't hold the thread still and fetch the needle up to it; hold the needle still and poke the thread at it; that's the way a woman most always does, but a man always does t'other way."
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  7. #17
    Senior Member Just Jeff's Avatar
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    Good point. One thing I've found is that it's "easier" for a fabric to be downproof with higher quality down. There are fewer quills to poke thru...it's very difficult for a cluster to poke thru fabric b/c there's nothing sharp on it. And if someone's going to pay for a quilt made from expensive fabric, they might as well have the down to go with it.

    It also depends on the use. For example, my DownHammock is made from standard 1.9 oz ripstop. I don't think it's technically "downproof" but since the down hangs below it, and I don't put any pressure on the down while I'm sleeping, it doesn't poke thru. (It's also Ed's 900fp...see above.) I'm not sure this same fabric would do that if I made a TQ with it, though. So using non-downproof for an UQ would probably be somewhere in between.

    Stuffing it may be an exception to that where some down may poke thru, but I don't remember this happening with the DownHammock.
    “Republics are created by the virtue, public spirit, and intelligence of the citizens. They fall when the wise are banished from the public councils because they dare to be honest, and the profligate are rewarded because they flatter the people, in order to betray them.” ~Judge Joseph Story

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  8. #18
    Senior Member Ramblinrev's Avatar
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    If I remember correctly 1.1 ripstop is considered downproof only if it is calendared. That process tends to seal the weave. I don't know if a lighter weight nylon would act the same.
    I may be slow... But I sure am gimpy.

    "Bless you child, when you set out to thread a needle don't hold the thread still and fetch the needle up to it; hold the needle still and poke the thread at it; that's the way a woman most always does, but a man always does t'other way."
    Mrs. Loftus to Huck Finn

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    Important thread injector guidelines especially for Newbies

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  9. #19
    Senior Member Just Jeff's Avatar
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    I think you're right. I wonder if you could calendar .25 oz.
    “Republics are created by the virtue, public spirit, and intelligence of the citizens. They fall when the wise are banished from the public councils because they dare to be honest, and the profligate are rewarded because they flatter the people, in order to betray them.” ~Judge Joseph Story

    - My site: http://www.tothewoods.net/
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    IMPOSSIBLE JUST TAKES LONGER

  10. #20
    Quote Originally Posted by Bleemus View Post
    I used to be a sail maker for a rather large company. I was in charge of the roller furling jib division but we were located in the buidling where all of the spinnaker work was done so I know nylon a wee bit.

    An underquilt has no load on it yet you guys are building it with 1.0 ounce nylon for some reason. We used to make light air spinnakers with .25 ounce nylon. Since it is not subjected to extreme wear, is not under load please tell me why you are building with what we used to use for heavy air spinnakers. 1.2 was for heavy air. 2.2 ounce was a storm spinnaker for higher that 35 knots of breeze.

    i believe the weights you are referring to are a little different that what we're using. those were probably sailmakers yards for one thing, and probably don't include the weight of the coating and treatment. the lightest spinnaker cloth around around i believe (correct me if i'm wrong) is just under 30g/m, (including the finish) which is barely lighter than 1.0 oz/yd. just because it's called .25oz fabric, doesn't mean that's what it actually weighs

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