Hi Fred:www.gossamergear.com have this tipe of pad.Good look.

An equally light alternative to using a torso length pad is to make or buy an ultralight air mattress. Last year there were a number of discussions about making super light air mattresses. One such thread can be found at:

http://www.backpacking.net/forums/showflat.php?Cat=&Number=52242&page=&view=&sb=5&o=&fpart=all&vc=1

http://www.balloonbed.com/ is selling a air mattress which use balloons for the air bladders. "Base weight" is 3oz, plus .2oz (7grams) worth of balloons / night. The whole package (air mattress, pump, balloons for four nights is smaller than an apple. I wrote up a brief review of the balloonbed http://www.verber.com/mark/outdoors/gear/reviews/balloonbed.html

I generally found the balloonbed to be more comfortable than a therm-a-rest ultright or a good closed cell pad when it came to cushioning. I wouldn't want to use it in cold weather since it was be less insulating and tieing balloons with cold fingers won't be fun.

I wouldn't recommend using an ultralight air mattress on trips where food and/or water drive pack weight up significantly because you will really want your pad to help the structure of your pack as well as providing something to sleep on.

--mark

Hi Mark, That is one of my projects and was a very popular thread. I use the my trail name of gardenville at some forums. Using the Poly Tube Material for an Air Mattress was one of my better ideas.

The SUL DAM and Sleep System will be used with a pack bag mounted on one of my SUL External Frames so I don't need a Pad for pack support. The summer version of my SUL Air Mattress can weigh as little as 4 or 5oz and be 78" long x 26" wide and 3.5 " thick blown up. This goes into my hammock so the 26" width works out fine. The final weight is a factor of the shell material used and type of clamp for the Poly Tubes.

I finished a working prototype DAM and Down Top Cover good to "0" degrees for use in my custom silk Speer Hammock. You can see the DAM System at the end of the thread. Cancer interrupted my cold weather testing plan last fall. I was able to finish my prototype and I hope to roll over my test plan from last fall to this fall.

The finished system was going to be made out of some Pertex Quatam I have but I may use something that is easier to replace and save the Pertex Quatam for something else.

Edited by bfornshell on 06/10/2005 14:22:53 MDT.

Ryan wrote a great article called "Hiking Efficiency: A Day in the Life of an Ultrlight Hiker". "Slow Joe" has a question?

For a long continuous hike such as an AT Thru-Hike:
1. Where is the most efficient place to carry my water?
2. What is more efficient taking a bottle out of a pocket on my pack for a drink (or someplace else) or using somekind of Platypus bottle with a drinking tube that I just suck water out of?

I have checked the weight of a lot of different water conainers. The Platypus water products seem to be the lightest ones. A small mesh pocket for a bottle would weigh less then a larger mesh pocket for something with a drink tube but if the drink tube way is more efficient day after day for several months the extra weight might be worth it.

I will be making my AT Pack so I can tailor my pack and how I carry my water bottles (s) what ever way seems to be the most efficient way. I expect to carry bottles for up to 2 liters of water.

Thanks.

>> 1. Where is the most efficient place to carry my water?

From the standpoint of weight distribution, as close to your pack as possible - ie in a hydration sleeve inside your pack. unfortunately, access is usually a pain, which makes you inefficient when it comes time to retreat/refill your water bladder. From a standpoint of water use, a hydration system is very hard to beat. But, you can't monitor your water consumption levels doing that either, and i find that i drink more than i need when using a hydration system.

Bill,

I would agree with Dr. J's response as to the best place to carry water.

However, for my part, i believe (i could be wrong) that there are really a number of factors that might come into play. Perhaps what follows is a little bit of over-analysis (or "over-anal-ysis" in this case - a bit too anal-retentive here???).

The bottom line will end up at the same spot as Dr. J, but a more circuitous route will be followed to get there.

1. keep heavy things as close to the body's natural CG (center-of-gravity) as possible.
2. since the natural CG is inside our body, we can't do this. furthermore, wearing a 10-30lb pack on our back moves our CG rearward.
3. it would be nice to distribute the water around our waist, i.e. around the area of our body's natural unladen CG. this would NOT move our CG while wearing a pack forward, but at least would no longer contribute to the rearward movement of our CG. But as you have already determined empirically (am i recalling this correctly from your earlier posts on the water-belt???), ergonomically this isn't really practical. it would also unload our shoulder straps somewhat if the water weight was transferred from the pack's hydration sleeve to our hip/waist-belt, but again ergonomically, this isn't practical for large volumes of water.
4. we have a heavy moment attached to our back, i.e. our pack.
5. since the wt. of our pack has moved our CG towards our back instead of inside of us, it would be nice to counter-balance this moment by moving the water in front of us, e.g. in a chest pocket, but perhaps again, both ergonomically and from a safety standpoint this might not be a good idea since it might make bending over, climbing with our chest close to the rocks, or seeing our foot placement difficult.
6. so now, the bottom line as i see it is: read Dr. J's post again for the right answer and forget what you've just read in this post.

i've only written it to perhaps stimulate someone else, more clever than i, to come up with a better way to carry water. as far as my own ideas, i'm "dry".

If i want to keep moving w/o having to stop to drink, the bladder is my choice. Also, it's easier to keep the fluid cooler in the summer & warmer in the winter if it's insulated inside of the pack. From a drinking effort standpoint, not that "sucking" water through a Platy's tube is difficult, but it's obviously easier to take a Platy bottle & tip it upside-down & drink from it, or squirt it into your mouth. I find that i drink more often, every 10-15 minutes a couple or a few swallows, if i'm using a bladder. if using a bottle, i drink less frequently (b/c i have to stop to drink or else i would trip & fall - i can walk & chew gum simultaneously, however), but i drink more than just a couple of swallows at one time.

if MY bladder starts to fill, then I'm drinking too much - this occurs more frequently when using a Platy hyd. bladder. However, if the converse occurs, i have to wonder if i'm gettin' a bit dehydrated? One thing i like about Platy bottles is that at a glance i can see how much water i have left just in case i need to ration it b/f the next water source is reached.

addtionally, for some individuals tight capsular ligaments of the shoulder joint restrict range of movement and prevent retrieving a water bottle from side mesh pocket. one could, however, use a bungee loop to afix water bottles to the shoulder straps. obviously, a bladder's tube eliminates this issue. they even have a nice "tube director" that you can bend to place the bite-valve right in front of you mouth - sort of like Bob Dylan playing the harmonica while having both hands occupied playing the guitar. For cold weather i might recommend an insulated tube covering - don't want the water to freeze if we forget to drink regularly.

GVP carries a bladder&tube in a side pocket of the G5 pack. he mentioned this in an email he sent me a while back. i guess it's not too difficult to check how much is left in a bladder in the side pocket (or rear pocket of the G6 Whisper pack) as cp. to a bladder in a pack's int. hyd. sleeve.

do you want to revisit the water-belt idea, or a variation of it?

Edited by pj on 06/29/2005 15:50:48 MDT.

When I first started backpacking, in the days when external packs ruled the trails, internal frame packs were deemed a passing fad, and frameless packs were only carried on day trips by bird watchers, I came across what I always felt to be the best solution for carrying water. (By the way, did I miss insulting anyone in my reminiscence?)

I attached a water bottle holster directly to the e-frame hipbelt, sliding it as far toward my hip as possible (where the frame stopped it.) In those days, hipbelts rarely had stabilizer straps to interfere with this placement. It put the water as close to my center of gravity as possible, and prevented it from exerting any "leverage" on the pack.

Camp Trails evidently agreed with this placement, because they adapted a very similar location on their Wilderness internal frame pack. (Yes, by then, it was obvious that i-frames were not a passing fad; once Colin Fletcher started using one, they were here to stay!)

However, shortly after this placement was introduced, folks started walking along the trails sucking water from tubes - and the hydration sleeve drove the water bottle pocket to extinction. (When did we get in such a hurry that we couldn't stop for a minute or two to take a drink and, perhaps, enjoy the view? End of editorial.)

Given my druthers, I still think the hipbelt is a great place for a water bottle. Of course, if you prefer a bladder and hose, inside the pack along the back is the best. With frameless packs, which usually lack stabilizer straps, maybe the pockets will make a comeback (what do you say, Glen Van Peski and Ron Moak?)

Edited by garkjr on 06/29/2005 17:37:08 MDT.

I want to thank Ryan, Paul, and Glenn for your impute. As far as I am concerned everything is on the table for this question. I remain open to other ideas or comments.

For most of my hiking life I have used some type of water container that attached to something on my hip. For my years as a US Infantryman it was the standard army canteen on my web gear pushed back toward my back. This arrangement made it very easy to reach my canteen and I normally had a canteen on both sides. The canteen cover had 2 clips on it that let you attach it to your web gear anywhere you wanted it. The webbing on the rucksacks were even made so you could attach the canteen cover to it.






The clip weighs 0.70oz so in todays world that clip would be way to heavy to think about using. I expect something like a light weight piece of Grosgrain would work. Since I expect to use one of my external frames on my AT Hike I will look at a possible design change for the "Side Wing" idea I am playing with. The Platypus .5L water bottle weighs about 19.5oz full of water. A pouch of some type should not be to hard to make that would attach to the "Side Wing" things. I could put a pouch on both sides of my frame. I could made them out of some really light material (think Cuben maybe) one for a water bottle and the other maybe for my small digital camera.

Something like this pouch/platypus bottle would put my water bottle on my hip belt and easy to reach. I will work on this idea and see how it turns out.

I'd forgotten about the army wearing canteens in the same spot (I was in the Air Force; they didn't trust us with real military gear.) However, now that you've reminded me, I do remember playing with my Dad's old webbing belt and (aluminum) canteen from WWII.

Guess my idea wasn't anywhere near as original as I thought - the army got there first. (Don't tell the Marines I said that!!)

I've seen peoples ideas for a water belt and thought it was a great idea. However unless it is integrated into the pack it could get in the way of a hip belt. Is it possible to make a system that would carry it around the small of the back at about stomach height. I think there it would have even less of a percieved weight since that's where we would carry extra weight if we were heavier.

I agree with Dr.J. that monitoring wa ter consumption levels is essential. In the winter I do store my bladder next to my back and use an insulated tube. I have become pretty good at estimating my remaining reservoir level, however, during the rest of the year I hang the fill opening flange on my Camelbak 3 liter bladder on the side compression strap that I added to my GoLite Gust. This makes it very easy to both monitor remaining reservoir level and to refill.

As far as consumption goes. I do drink more with a bladder-which is the idea. Most atheletes perform dehydrated and experience related reduction in work output and resistance to injury. With the bladder I sip small amounts every 2-3 minutes on the fly. This is almost like being on a glucose and electrolite I.V. drip. My body loves this and I can hike or climb 14 hrs. straight and still be strong and energetic nurturing my body in this manner.

Even Uber Hardman Mark Twight says if he had it to do over he would hydrate more - alot more.

any chance of some pics of the Gust compression strap w/ and w/o the bladder?

Sorry Paul,
I rang up Emily at the local phone company exchange office on my dial telephone to order one of those new-fangled digital cameras to snap some photos for you but my party line was occupied. If I can get the Edsel to turn over today maybe I can get down to the dry goods store to see if the new models have come in.

In the meantime, I can tell you that I used the supplied stitched in webbing attachment points to sew 2 compression straps on each side exactly like most packs come with. I used 1/2 in. webbing and ladder lock buckles from Outdoor Wilderness Fabric Inc. <owfinc.com>

These straps held my Camelbak fine for the length of the JMT last year and also held my randonee skis in place while climbing 7000' up Shepherd Pass this May with no problems.

thanks. understood - for the most part. what i didn't understand, but it didn't seem to affect me appreciation for the reply you wrote, was the "Luddite" reference in the subject line.

interesting

Edited by romanandrey on 10/20/2005 08:46:29 MDT.

My wife tells me back in the 70's she used to remove her clothes during rain storms and stuff them in her pack, hiking naked under a poncho. Her clothes stayed dry and few folks on the trail new her secret. I would guess that if temps were warm enough, the same could apply for setting up your pancho/tarp/tent. just get naked and dry off after set-up.

I noticed anonymous's comment that he couldn't see the need for trekking poles - and I agree with him.
I tried using poles, and found that I was spending far too much time worrying about where the poles were landing, when I should have been watching my feet. Good poles placement, but bad foot placement.
So now I let the automatic parts of my brain focus entirely on foot placement - and go faster and farther and more safely as a result.
And I am carrying less overall weight.

this topic has been dealt with more than adequately previously - several times. search the Forums for some rather detailed descriptions of the many irrefutable advantages of using Trekking Poles. be prepared to have someone keep you awake as you read the lengthy posts. the advantages described range from the the area of physics, and engineering, to muscle physiology, and applied kinesiology, as well as touching upon one very limited aspect of the history of man. there are some pretty compelling arguments in these posts which should at least give one pause to contemplate - even though they weren't intended to be a polished polemic, nor an all-encompassing apologetic, but rather a hastily, off-the-top-of-the-head, collection of words - much like this Post.

from my perspective (which no one is required to share - see the below "quote"), the only disadvantage is the extra 4.7oz i need to carry. however, the many advantages far "outweigh" (pun intended) the measly 4.7oz my GG LightTrek poles weigh..

must everyone use trekking poles? obviously, no.

are they absolutely required on all terrain? no.

do they offer advantages virtually anytime they are used? yes.

do these advantages outweigh the disadvantages? that's a question each individual must answer for themselves. "hike your own hike!" (was it RayJ that wrote that? i can't remember. anyways, it was a greater one than i.)

I can not travel with nearly as light a pack as most on this site due to my professional camera gear. In addition, I have the remnants of 2 broken wrists from a bicylce accident with a car (the car won). I don't have the strength in the hands and wrists that I once had and I periodically get pain in the wrists. I can not grab things such as trees etc. for regaining balance or assisting in climbing. My trekking poles have saved my butt and equipment more than once.

Additionally, due to the weight of my gear (largely due to the camera equipment) my center of balance is thrown off and the poles help me maintain balance and make it easier to traverse up and down hills, as well as maintain support and balance when stepping down.

In addition, the weight of my 5.4 oz BMW Stix Pro Poles (6.2 oz with baskets) is comparatively less if using a shelter that requires one or more poles (they replace the need to carry extra poles), thus they perform multiple tasks.

I consider the additional weight well worth the effort.

Rich

Edited by naturephoto1 on 11/04/2005 07:47:17 MST.

goodness sakes, stick a couple of 12 oz plastic pop bottles in the side pockets of your pants! Pull em out (on the move if you must) and drink. CG is low, the wgt is on your hips and it's handy. No tubes or reaching into your pack. Keep it real simple!
the Gnome of Blue Island