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python, code, gear, django

Gear Tracker

Gear Tracker is an open-source inventory system for wilderness travel gear.

When I first bought my scale, I started a spreadsheet containing the weights of various pieces of gear. It seemed like a good idea – I knew I wanted some sort of database to store my measured weights and other notes in – but I never got around to updating it. Data in a spreadsheet is too static. You can’t do much with it. I think that characteristic contributed to my disinterest with the spreadsheet.

So for a while now I’ve had the idea of writing a web application to track my gear. Over the past week, I finally got around to doing it.

Gear Tracker is built on Django, a web application framework. (If you’re not familiar with Django, and you have anything to do with making websites, it’s probably worth your time to learn a thing or two.)

Gear

Gear Tracker’s primary purpose is to track gear.

Screenshot of item admin

Each item has a weight and acquisition date associated with it. It can be categorized, tagged, and related to other items. There are fields to input size, a link to the manufacturer’s page, a link to a review, and to upload an image. A text area allows the user to store any notes related to the item.

Items can be archived. This provides a way to not list gear that the user no longer owns, but to keep it in the database for future reference of its weight or other attributes.

Weights

Weights are always input in grams.

The metric system makes the most sense and is the easiest to work with. An item’s weight can be displayed in grams or, if the item weighs more than 1,000 grams, kilograms. But because some of us are crippled and still like to see imperial weights, Gear Tracker can also display the item’s weight in ounces or pounds.

Gear Lists

Gear Tracker can also generate gear lists.

One of the things that has prevented me from doing many gear lists in the past is that they’re a pain in the rear to create. It takes a while to manually write out every item of gear that I take on a trip. If I want to add the weight of each item – well, that’s asking too much! It’s not worth it.

Screenshot of gear list admin

Now, making gear lists is easy. Gear Tracker already has detailed knowledge about each piece of gear. All it takes to create a gear list is to select the item, specify how many of that item I took, and whether the item was packed or carried. The result is an organized, detailed gear list for every trip. Total weights are calculated, of course, and can be output in either metric or imperial units.

Private Gear Lists

Gear lists can be made private.

I generally create gear lists when I’m packing before a trip. But I don’t like to publish the lists until I actually return from the trip and also have a report and photos for people to peruse. So, Gear Tracker allows a gear list to be marked as private.

Download It, Hack It, Use It

I’m running Gear Tracker at /gear, but if you want to grab your own copy and run it yourself, you can! I’ve open-sourced the code under a BSD-license. You can find it at GitHub.

gear

Relative Warmth of Synthetic Puffy Pants

A CLO value is a measurement of the warmth provided by a garment. It serves as a means of comparing the relative warmth of various clothing insulated with synthetic materials.

A good explanation of CLO values can be found on Adventure Network:

Developed in 1941, [CLO] was the first real attempt to explain the insulation value of clothing so people would know how much clothing they might need to stay warmer or cooler in a given temperature environment. A CLO value of 1 is defined as the amount of clothing required by a resting human (in other words, sitting, lying down or standing, but not moving) to be comfortable at a room temperature of 21 degrees C, or approximately 71 degrees F. That single value of CLO is equivalent to a typical business suit worn by a man -- shirt, undershirt, trousers and suit jacket. The higher the CLO number, the more insulating value is provided.

I recently put together a list comparing the CLO values of various synthetic puffy pants for a forum that I belong to. Some of you may find it useful as well, so I’m posting it here.

All of the weights given are manufacture weights. They might not be entirely accurate. I found the CLO values for the various insulating materials by searching online. Some of them are provided by the manufacturer, some by third parties.

Kifaru PackLock Pants (Arctic)

Weight
27 oz
Shell
RhinoSkin (.9 oz/yard2)
Insulation
6 oz Climashield Combat (CLO: .79/oz)
CLO
4.74

Patagonia Micro Puff Pants

Weight
17.4 oz
Shell
Ripstop polyester (32-denier, 1.5 oz/yard2)
Insulation
3.2 oz of PrimaLoft One (CLO .84/oz)
CLO
2.69

Rab Photon Pants

Weight
15.8 oz
Shell
Pertex Microlight (30-denier nylon, 1.3 oz/yard2)
Insulation
3.5 oz of Primaloft Sport (CLO: .74/oz)
CLO
2.59

Backpacking Light Cocoon Insulated Pant

Weight
7.3 oz
Shell
Pertex Quantum (.9 oz/yard2)
Insulation
Unknown (Polarguard Delta?)
CLO
2.5

Integral Designs PLQ Pants

Weight
11.4 oz
Shell
Pertex Microlite (30-denier, 1.3oz/yard2)
Insulation
3 oz of Primaloft Sport (CLO: .74/oz)
CLO
2.22

782 Gear Smokin' Chaps

I previously had 782 Gear's Chaps listed as using Climashield Combat. Now I'm told by a retailer that they actually use Primaloft (what type of Primaloft wasn't specified). This agrees with 782's technology page, which lists Primaloft as one of the products that they use. Yet 782 has recently updated the Chaps' product page to specify that the pants use "Climashield" (what type of Climashield isn't specified). Until this is cleared up, I'm leaving the Smokin' Chaps off this list.

Kifaru PackLock Pants (Standard)

Weight
17 oz
Shell
RhinoSkin (.9 oz/yard2)
Insulation
2 oz Climashield Combat (CLO: .79/oz)
CLO
1.58

Montbell U.L. Thermawrap Pants

Weight
10.2 oz
Shell
Ballistic Airlight (15-denier nylon, .9 oz/yard2)
Insulation
1.6 oz of Exceloft (CLO: .683/oz)
CLO
1.09
food, review, gear, ablution

The Vagabond's Spatula

Cleaning my pot in the wilderness has always proved a challenge. I’m not hugely concerned with completely sanitizing it – that would not be realistic – but I do like to get all the food remnants out of the pot after every meal. A few extra ants in my ramen? No problem. Fungi and bacteria in the oatmeal? I’d rather avoid that.

Getting every last bit of food out of the pot with a spork doesn’t work. If I’m in a desert or on the beach, sand can be used to scrub the pot. The Equisetum family (Horsetails) are also good scrapers, due to their high silica content. But neither sand nor Horsetails are available frequently enough on my trips to make them realistic solutions. As well, cleaning the pot with those means that I’m dumping food remnants onto the ground, rather than into my belly. If I’ve humped it, I’d rather eat it.

I used to carry a piece of a green scouring pad. Those work great when the sun is available to dry them out after use. Here in Cascadia that means they work about 3 months of the year. The other 9 months – especially in winter – it proves a challenge and a hassle to dry them fully. I don’t like storing the pad with any moisture in it. Doing so would create the perfect incubator for bacteria.

Enter Crow. She had the excellent idea of using a spatula head to clean the pot. It’s a simple system:

  1. Eat dinner out of pot
  2. Clean pot with spatula, licking food remnants off of spatula as you go
  3. Boil water in pot
  4. Pour heated water from pot into bottle for tea

The pot is cleaned with the spatula. Afterward, boiling water in the pot helps to kill any nasties that might be hanging about.

I discovered this idea on Crow’s blog about a year ago. At first I took a small kitchen spatula and cut the handle off. It worked, but there was about 2” of the plastic handle inside of the head that couldn’t be removed, which translated to dead weight. Later I discovered that people actually sell spatulas with removable heads (to make them dishwasher safe, I think). I bought one of those online, but when it arrived the head was a little too small for my tastes. (In the wilderness I always treat my hands as dirty. If I’m licking the spatula, I want it to be big enough where I can hold it with my fingers near the top and lick near the bottom. I do not want to lick where my fingers are.)

About a month after I had started to use the sawed-off spatula, I discovered that GSI made exactly what I wanted: a compact scraper.

GSI Compact Scraper

At 16 grams (0.5 oz), it’s not the lightest possible solution. But it’s lighter than my first attempt, and the perfect size for my needs. The blue part is a soft rubber, like a normal spatula head. The white bit is hard plastic, meant for scraping burnt foods. (Burning your meal, I think, is a mistake you only make once. So far I’ve not actually used the white part to scrape the pot. It’s where I keep my fingers.)

My method of using the scraper differs slightly from Crow’s. I eat the meal with my spork, attempting to get as much of the food as possible. Afterward, there will still be plenty left in the pot.

Pot After Oatmeal

When the spork is of no more use, I pour some water into the pot, swish it around, and drink. (A habit I picked up in southern Idaho’s desert. Water was scarce, so if you used it to clean your pot, you still had to drink it afterward. The taste is not always entirely pleasant, but you get used to it, and are wasting no resource.) This takes care of some of the left over food, but with meals like oatmeal, there’s still gunk left over.

Pot After Water

After this precursory cleaning, I go to work with the scraper: scraping the pot clean, licking clean the spatula as I go (leave no calorie behind, I say). The pot will then be visibly clean.

Pot After Scraping

At this point, I may or may not boil water in the pot. If I have brought enough fuel for an after-meal drink, I’ll boil the water in the pot to finish cleaning it, then dump the water into an old Vitamin Water bottle for a drink. Most of the time I don’t plan on warm drinks. Either way, at the end of the process the pot will still have a little moisture in it. If I’ve just had dinner, the cleaning is complete: I’ll leave the pot till breakfast. On the other hand, if I’m moving again after the meal, I don’t like to pack my pot away wet, so I’ll wipe it down with a small piece of an absorbent camp towel.

The GSI Compact Scraper is now a permanent part of my kitchen. Since I started using it at the end of last year, it’s also the piece of gear that people request to borrow the most! (It goes in my mouth. I never lend it.) I’d recommend any wilderness traveler pick up some sort of cheap spatula or scraper.

edc, review, gear

Eagle Creek Slim Wallet

I carried the Spec-Ops THE Wallet Jr for four or five years. It’s certainly well made and, other than the tags I cut off of it, looks the same as the day I bought it. But it’s bulky, heavy, and carries more than I need. Primarily because of the bulk, I went looking for a slimmer wallet, settling on the Eagle Creek Slim Wallet (which now seems to be a discontinued product). In another couple months it will have seen a year of use.

Eagle Creek Slim Wallet

The Slim Wallet is made out of 420D Double Box HT nylon, which so far seems tough enough to survive my pocket: there is, as of yet, no noticeable damage to the wallet. It’s simple interior consists of a billfold, clear pastic ID window, and three card slots. There are actually three additional slots inside the wallet. I don’t think these were intended as such (instead they seem to just be byproducts of how the wallet was sewn), but they work to carry additional cards or hide small items.

Eagle Creek Slim Wallet

As the name implies, the wallet is incredibly thin. Perhaps not as thin as an ALL-ETT wallet (I considered one of those, but wasn’t convinced as to the durability), but a huge improvement over the Spec-Ops wallet. This took some getting used to. After years of carrying a bulky wallet, I was accustomed to feeling the wallet in my pocket, which provides some sense of security. The Slim Wallet is slim enough so that you don’t always notice that it’s there.

My only complaint about the wallet is that the billfold is just as wide as a Federal Reserve Note, which makes it somewhat tricky to get the bills in there. If the wallet was half an inch or so wider, bills could be more easily slid inside.

Billfold

I carry a few items in the wallet in addition to the normal cash, few cards, and ID.

Wallet Survival Items

There is a small repair kit, which consists of a #17 sailmaker’s needle, a #5 crewel needle, kevlar thread, a small safety pin, and a very small misch-metal ferro rod.

Wallet Repair Kit

In addition to the repair kit are two AquaMira water purification tabs, two emergency $20 bills (to be used only if I’m lying half dead in a ditch), and a small piece of Rite-in-the-Rain paper with my GPG key fingerprint. (If this sounds familiar, it’s because I keep almost identical items in my hat.)

All of these items tuck nicely inside the wallet’s hidden slots and add no noticeable weight or bulk.

For more ideas about urban wallet survival kits, check out TEOTWAWKI blog.

gear, fire, survival, bushcraft, footwear, hardshell, navigation

Gear List

I’ve had a few requests to do a gear list for some of my recent trips. Since it’s been over a year since the last one, I thought I would acquiesce. What follows is the list from my recent journey to the Goat Rocks. Though that was a short trip, my gear has varied very little on any trip this year. I’ll take warmer clothing earlier (and later) in the year, and of course the amount of food varies based on the length of the trip, but most everything else remains static. This is quite the change from even just a year ago, where it seems like my gear would change drastically from trip to trip! Perhaps I know what I’m doing a little better now.

Some of the gear is light, some of it isn’t. Regular readers know that I always struggle to find a balance between lightweight, functionality, and durability. Certain items that I carry – like, say, the saw – are not likely to be found in the pack of an average backpacker, but are suited to my method of travel. In all, my base weight for this trip was right at 20lbs. I’m not too ashamed of that. In fact, considering that my pack alone weighs 6lbs when empty, that base weight is pretty darn good.

If you have any questions or comments about the items, feel free to get in touch.

Packed

  • Kifaru ZXR
  • Kifaru Longhunter Lid
    • Shoulder strap
    • 1 quart ziploc
      • Toilet paper
      • 1 oz Hand sanitizer
    • Emergency fire kit
    • First aid kit
    • Kifaru Ultralight Pullout (small)
      • REI Keychain Thermometer
      • K & M Industries Match Case
      • Croakies Glasses Retention Lanyard
      • Jetstream ballpoint pen
      • Sharpie
      • Highlighter
      • #2 Pencil
      • All-Terrain Lip Armor (SPF 25)
      • 4x safety pins
      • Duct tape (length unknown, .75" diameter roll)
      • StickPic #3
      • Badger Healing Balm
    • Sea to Summit Headnet
    • Petzl Tactikka headlamp
    • Tyvek Stuff Sack
    • Rite in the Rain No. 393-M
    • Large garbage bag
    • 1 quart ziploc
      • 3x Green Trails maps
    • Plastic vial-type container (found on street)
      • 16x cotton balls w/ petroleum jelly
    • Hard glasses case (unknown brand/model)
      • Oakley soft lens cloth bag
      • Julbo Micropores (Rx)
    • Sea to Summit Ultra-Sil Dry Sack (2 liter)

On Body

(I do hope that I haven’t forgotten anything. If you notice anything conspicuously absent, please let me know!)

edc, gear, knife

Every Day Carry

It’s been about a year since the last one, so today I did another dump of what is currently in my pockets and bag. Everything that I am carrying today is representative of what I carry most every day. Much of it is the same as last year.

Some things occasionally change: I frequently switch between the Emerson Mini-Commander and the Izula (I probably carry the Izula more frequently than the Emerson). If I need more stuff, I might change the bag to my TAD Gear FAST Pack EDC or the Kifaru E&E.

Urban EDC Level 1: Worn

Urban EDC Level 2: Carried

Urban EDC Level 3: Vehicle

As usual, you can visit the Flickr photo pages for identification of every item.

review, hat, gear

The Humble Boonie Hat

I’m a big fan of fancy hats. I discovered the joy of a well-made and stylish hat a couple years ago with the Duluth Oil Cloth Packer Hat. After that hat died, I tried others. My current favorites are the Tilley T3 and the (locally made) Filson Tin Cloth Packer. But as great as those hats are, sometimes it’s nice to get back to basics.

If all you want to do is keep the sun off, it’s hard to beat the boonie hat. It’s lightweight, cheap, and compresses down to fit into a pocket.

Boonie Hat: Top

Boonie Hat: Bottom

Being cotton, I find these hats to be useless in the rain, but I do tend to have a hooded hard shell with me for that purpose.

This particular boonie hat happens to be MultiCam. I bought it back when MultiCam was new and I could fool myself into thinking that it was low-profile. “Hey, nobody actually issues MultiCam, so it’s not like this hat looks very military-like. If anything it makes me look like a harmless airsofter.” Something along those lines. Now that everybody and their grandma is issuing MultiCam, it’s maybe a little more military looking. I sewed a Rebel Alliance patch on the top to make me feel better about it (and because rebelling against empires is always the cool thing to do).

Boonie Hat: Pocket

The other modification I made to this hat was to sew a little velcro on the pocket. After getting my Tilley hat, I became somewhat addicted to having a pocket in the top of my hat. Most boonie hats have them, but they’re just a slit, with no sort of closure. I don’t trust them to hold small items. Having added the velcro, I can feel sure that whatever I put in there won’t fall out.

Boonie Hat: Stash

What I keep in all my hats that have pockets in them is the same: in one ziploc bag, an emergency $20 bill (using this is to be avoided as much as possible). In another ziploc bag, I keep four AquaMira water purifying tabs and a repair kit.

This particular hat weighs 122 grams (4.3 oz) with added patch and velcro. Including the contents of the pocket, the total weight is 134 grams (4.7 oz). A nylon hat like a Tilley LT5B could save me an ounce, but for the money it’s hard to beat the boonie.

water, howto, gear

DIY Platypus Pre-Filter Cap

Although I have misgivings about their durability, Platypus‘ 2L+ bottles remains the primary water reservoirs in my pack. It’s been a bit over a year now since I started using them. At the same time I switched over to Platypus, I also started treating my water with chemicals rather than filtering it. Both methods of treatment have their advantages and disadvantages, but lately I have been using chemicals almost exclusively.

A water filter, of course, filters out not only the invisible nasties that upset the stomach, but also the visible things things that don’t cause much harm but aren’t altogether pleasant: dirt, dead bugs, small rocks, and the like. When I moved to using chemicals I was just dumping the water into my drinking vessel direct from the source. Without any sort of filter, the water could sometimes be a bit gritty. Too textured for my taste.

As a first attempt to solve this I started to place a bandanna over the opening of the Platypus, and then poured the source water over that. That worked great for getting out the sediment, but then I had the problem of having a wet rag. If the sun is out, it dries, but the other 307 days of the year, the bandanna – even a synthetic Buff – became a bit of a hassle to dry. I wanted some sort of pre-filter that I could get wet without worrying about it.

The solution (like more than a few before it) came while browsing the BackpackingLight forums.

DIY Platypus Pre-Filter Cap

A filter washer is a rubber washer with a mesh screen in the middle. Apparently they’re used in garden hoses and washing machines to remove sediment. I was able to find them easily in the plumbing section of a local hardware store.

I took an old Platypus cap and drilled out the center of it. Then, with a little Gorilla Glue, glued the filter washer onto the cap. That’s all there is to it! The new pre-filter cap weighs 2 grams (0.07 oz) and shouldn’t cost much more than $1 to make.

  • DIY Platypus Pre-Filter Cap
  • DIY Platypus Pre-Filter Cap

The downside to the pre-filter cap is that it does noticeably decrease the flow rate of the water. To fill the Platypus, I use a scoop made out of an older Platypus bottle with the top cut off. Without the pre-filter cap, it takes all of 30 seconds to fill the Platypus bottle. With the pre-filter cap, it takes something more like 2 minutes to fill up the bottle. I have to pour the water out of the scoop much more slowly. Because of this I’ll sometimes forgo using the pre-filter cap if the water looks very clean, but the majority of the time I do use the cap. It’s become a permanent addition to my pack.

DIY Platypus Pre-Filter Cap