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bicycle, blogroll

Tube Talk

I enjoy Jan Heine’s blog. I’ve been reading it regularly since, I think, 2012. I learn something new from most posts. His book on all-road bikes is great. When I saw his post titled Why TPU Tubes are Better for the Earth in my feed reader, I expected to learn something about the difference in manufacturing inputs or emissions between butyl and TPU tubes. Instead I found myself reading crazy talk about how everybody goes through butyl tubes like candy and how they’re so hard to patch that nobody bothers. I guffawed. Then I said “what the fuck”. Out loud. With my voice.

In theory, butyl tubes can also be patched. To make this worth while, it’s best to collect a pile and fix them in one large batch. Set up an assembly line of sorts…

Let’s face it: Those of us who patch our butyl tubes usually have a pile of tubes in the basement, waiting for the day when we’ll get around to patching them.

I cannot fathom an individual having enough punctured butyl tubes to justify considering an assembly line repair process. This would take me, like, a decade to collect.

The last time I had a flat was on the Oregon coast in June 2023. The time before that was when I picked up a roofing nail on Potrero Hill that tore open my tire in December 2022. I think next on the list was about 6 months before that, when I flatted twice on the same road in Napa county – not because I failed to clean out debris after fixing the first one, but because some of the roads up there have been so destroyed by heavy trucks rebuilding after the fires that I just got two punctures in two different parts of the wheel a few blocks apart. These events are rare enough that I actually remember them.

When I do get a flat I just take out my patch kit and fix it. It takes like 5 minutes. If the weather outside is frightful, or if I’m on a schedule and don’t have those 5 minutes, I swap in my spare tube. Then when I get home (or to camp) that evening, I fix it.

This concept of not addressing a problem that is so quick and easy to correct, and instead letting these problems pile up until you have a basement-full, is difficult for me to understand. It’s like continually buying a new pair of underwear every day because doing laundry is too hard. It suggests to me a moral failing which, if extended to all the similarly small problems that one regularly encounters in life, will lead to collapse of our species.

That’s where TPU tubes score. Patching them is easy: Just wipe the puncture with alcohol and stick on a self-adhesive patch. That’s all. It’s so easy that you could do it by the roadside. The alcohol wipes are sealed, so they don’t dry out—your patch kit lasts forever, ready when you need it.

Plot twist: I patch butyl tubes by the roadside.

Those little foil packets of alcohol wipes are not impermeable. Ask anyone who has neglected a medical kit for a few years, only to come back and find that all the prep pads are dry. They will last a long time when stored in a typical indoor environment. They will last less long when carried out in the world, exposed to varying temperatures, humidity, sun, rain, etc. Tube repair kits, like human repair kits, need to be carried outside. If I start carrying a TPU patch kit, the alcohol wipes are going to be on a rotation schedule, just like my vulcanizing fluid. Only then will TPU patch kit last forever. Just like my butyl patch kit.

The new Rene Herse TPU tubes are neat. They pack down to a much smaller size than butyl tubes. I am interested in using one to replace the spare butyl tube I carry under my saddle. To this end, I have been running one in the front wheel of my new bike for about a month and a half. I do not intend to regularly use the tubes in my tires, but I can’t carry something as a backup until I have a few months experience actually using it1.

I will test the TPU tube for at least another month and a half before I decide if it will replace my spare butyl, but the preliminary results are in. I have noticed no difference in the ride quality. I have noticed no difference in the speed with which it loses pressure2. I have noticed no different in the puncture resistance3. This is all great news. If the TPU tube continues to perform exactly like a butyl tube, but store more compactly, I will happily carry it as my spare. They are light and compact enough that the next time I go on tour, I may even carry a second or third spare.

Notes

  1. ↵ It is an axiom that carrying emergency supplies which you have never actually used is idiotic. I try not to be an idiot.
  2. ↵ When I first installed the TPU tube, it lost about half its pressure in about 24-hours. I pumped it back up and the same thing happened again. I threw a wrench on the valve core and was able to tighten it about 1/8th of a turn. Since then it has held pressure the same as the butyl tube in the rear wheel. I think the TPU tube shipped from the factory with a loose valve core. If I do choose to carry one (or more) as a spare, I will crank down on its valve core as soon as I received it to ensure that I won't have to think about that whenever I eventually need the tube.
  3. ↵ Spoiler alert: I have had zero flats on this bike since it was built 10 months ago.
micro, blogroll

Of the many defunct blogs in my feed reader, one of those I miss the most is As the Crow Flies.

Crow is a woman who spent the summers hiking (mostly all or part of the PCT) and the winters as a cabin hermit (mostly in north-central Washington). Her interests in long-distance travel and off-grid living share many commonalities and resulted in much valuable information and insight. Long time readers here will remember her from The Vagabond’s Spatula.

micro, gear, edc, blogroll

Clothing provides shelter, cultural signaling, and the structure upon which other tools are carried.

I enjoyed EDC Part 0: The Individual Uniform at Swift, Silent, Deadly.

quote, conflict, blogroll

Import Export Snowmobile

Oblique Strategies

Austin Kleon highlighted a Brian Eno quote on why he stopped touring:

What I really like doing is what I call Import and Export. I like taking ideas from one place and putting them into another place and seeing what happens when you do that. I think you could probably sum up nearly everything I’ve done under that umbrella. Understanding something that’s happening in painting, say, and then seeing how that applies to music. Or understanding something that’s happening in experimental music and seeing what that could be like if you used it as a base for popular music. It’s a research job, a lot of it. You spend a lot of time sitting around, fiddling around with things, quite undramatically, and finally something clicks into place and you think, “Oh, thats really worth doing.”

Which is precisely what Boyd was describing in Destruction and Creation. In his biography, Robert Coram illustrates a specific example:

Boyd’s favorite example in “Destruction and Creation” was a thought experiment that took his audience through his exegesis on the nature of creativity. It went something like this: “Imagine four separate images. Let’s call them domains. Each domain can be easily understood by looking at its parts and at the relation among the parts.”

Boyd’s four domains were a skier on a slope, a speedboat, a bicycle, and a toy tank. Under “skier” were the various parts: chair lifts, skis, people, mountain, and chalets. He asked listeners to imagine these were all linked by a web of relations, a matrix of intersecting lines. Under “speedboat” were the categories of sun, boat, outboard motor, water skier, and water. Again, all were linked by the intersecting lines. Under “bicycle” were chain, seat, sidewalk, handle bars, child, and wheels. Under “toy tank” were turret, boy, tank treads, green paint, toy store, and cannon.

The separate ingredients make sense when collected under the respective headings. But then Boyd shattered the relationship between the parts and their respective domains. He took the ingredients in the web of relationships and asked listeners to visualize them scattered at random. He called breaking the domains apart a “destructive deduction.” (Today some refer to such a jump as “thinking outside the box.” But Boyd believed the very existence of a box is limiting. The box must be destroyed before there can be creation.) The deduction was destructive in that the relationship between the parts and the whole was destroyed. Uncertainty and disorder took the place of meaning and order. Boyd’s name for this hodgepodge of disparate elements was a “sea of anarchy.” Then he challenged the audience: “How do we construct order and meaning out of this mess?”

Now Boyd showed how synthesis was the basis of creativity. He asked, “From some of the ingredients in this sea of anarchy, how do we find common qualities and connecting threads to synthesize a new and altogether different domain?” Few people ever found a new way to put them together. Boyd coaxed and wheedled but eventually helped the audience along by emphasizing handle bars, outboard motor, tank treads, and skis.

These, he said, were the ingredients needed to build what he called a “new reality” – a snowmobile.

micro, radio, conflict, blogroll

Avian carriers achieved a message delivery rate of 95% in the first World War, and were reported to reach 99% success in an Army study published in 1944.

In an article at At War on the Rocks, Dr. Frank Blazich provides a brief overview of the military use of homing pigeons and argues for their reintroduction as a response to electronic warfare.

Considering the storage capacity of microSD memory cards, a pigeon’s organic characteristics provide front line forces a relatively clandestine mean to transport gigabytes of video, voice, or still imagery and documentation over considerable distance with zero electromagnetic emissions or obvious detectability to radar. These decidedly low-technology options prove difficult to detect and track. Pigeons cannot talk under interrogation, although they are not entirely immune to being held under suspicion of espionage. Within an urban environment, a pigeon has even greater potential to blend into the local avian population, further compounding detection. The latter presumably factored into the use of pigeons to clandestinely smuggle drugs, defeating even the most sophisticated of walls.

Furthermore, pigeons provide an asymmetric tool available for hybrid warfare purposes. The low-cost, low-technology use of pigeons to transport information or potentially small amounts of chemical agents — or even coded cyber weapons — makes them a quick and easy asset to distribute among a civilian population for wider military purposes. During World War II, the British Confidential Pigeon Service of MI14(d) dropped baskets of homing pigeons behind enemy lines for espionage purposes, gathering invaluable military intelligence in the process from a wide array of French, Dutch, and Belgian civilians. Even as a one-way means of communication, the pigeon proved an invaluable military asset.

Via Schneier, who reminds that we have an RFC.

micro, radio, osint, blogroll

I don't know anything about, or have much interest in, high-frequency trading.

But some of the technology behind it is fascinating. This past summer the Sniper in Mahwah blog published a four part series investigating the use of shortwave radio as a low latency link in high-frequency trading. I’d call it the best piece of hacker-tourism since Mother Earth Mother Board, but I think it’s probably the only piece of hacker-tourism since Mother Earth Mother Board. It doesn’t have much competition.

micro, blogroll

I seek out houseware recommendations from people who live on boats.

The size and weight constraints of the lifestyle means that they tend towards gear that is compact and multifunctional, the corrosion inherent in the environment and the time they spend away from easy resupply points encourages them to favor durability and repairability, and the fact that their entire living accommodations can be violently moved prompts them to spend time considering how to optimize storage and organization.

One of the blogs in this world that I occasionally follow is The Boat Galley. I’ve been happy with the handful of (mostly kitchen related) purchases I’ve made based off of Carolyn’s recommendation (including the aforementioned toaster). Another mainstay is, of course, Nomadic Research Labs by Steve Roberts who, in my opinion, can do no wrong.

micro, blogroll

Typeset in the Future analyzes the typography and semiotics in great science fiction films.

New content is infrequent, but I’m always excited when a new entry pops up in my feed reader. The latest is WALL·E. My favorite is Alien.