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Quantum Flat Pack

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PostedMar 22, 2015 at 12:41 am

I've come up with an idea for a Flat Pack.

Breathability is key because my camera needs to breath inside the pack. If condensation builds up inside the pack, it will destroy my camera and iPhone.

My thinking is that Quantum Endurance dries super quick. So I could create a flat pack, 22" by 14"; with four equal length pieces of Endurance; a hydration panel, main pocket and an exterior pocket; all three pockets would be equal sizes and made of Endurance.

The hydration sleeve is for drying wet cloths, since that pocket will heat up with body heat, against my back. The exterior pocket would be for my tarp, since it isn't essential that the tarp get dry. The main pocket would have my dry cloths and electronics in it.

My question is really about waterproof Quantum Shield. Is Shield so water proof that my gear wont dry inside? Should I make the pack out of Shield because it will breath just fine?

Should I use Endurance, since rain will need to penetrate two layers of Endurance before the moisture gets my gear wet?

Should I use Shield on the exterior since it's waterproof, but Endurance on the hydration sleeve, against my back, since it breaths and dries quicker? etc…

Any comments?

Edward Barton BPL Member
PostedMar 22, 2015 at 12:55 pm

WPB laminates are too delicate for packs, because they are prone to delamination. The better option is to keep your electronics in dry bags, use a more durable material for the pack, and use a waterproof liner for things that need to stay dry.

Bob Gross BPL Member
PostedMar 22, 2015 at 1:30 pm

"Breathability is key because my camera needs to breath inside the pack. If condensation builds up inside the pack, it will destroy my camera and iPhone."

This doesn't make a bit of sense.

First of all, cameras don't breathe. Second, condensation does not build up inside a pack.

Now, it is certainly possible for moist air and water to get into the pack, but that is generally only when you are not using a dry bag or when you have it open to the air. It might be possible for rain to leak in from some corner seam and get close to the camera. However, that is why they invented dry bags.

It is not necessary to use the biggest and heaviest dry bags. Anything will do.

If you allow your camera to get fairly cold and then you bring it into warmer air, you can get condensation on the surfaces. That is simple to prevent. Keep your camera at a more constant temperature, perhaps on the cool side.

Further, if you are paranoid about this, then use some desiccant packs. That is the standard solution for a humid environment.

–B.G.–

todd BPL Member
PostedMar 22, 2015 at 1:36 pm

+1 to what's been said so far.

I'm not sure I understand the hydration sleeve part: is it INSIDE the pack? If so, I don't think there is any way to dry our clothing inside the pockets. The fabric may be "breathable", but that's really more marketing spin than "breathing" as customers take it to mean. Not enough moisture will escape.

Don't give up on your quest though! Keep going until you have what function you're looking for.

Viewing 4 posts - 1 through 4 (of 4 total)
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