Hydra-Shok is a type of ammunition designed for self-defense and law enforcement applications. It is produced by Federal Premium Ammunition, a well-known manufacturer in the firearms industry. Hydra-Shok bullets are characterized by their unique design, which includes a central post or "center core" in the hollow point. This design is intended to promote controlled expansion upon impact, allowing the bullet to create a larger wound channel while retaining weight and improving penetration.
Insensitive munitions (IM) are a class of explosives and ordnance designed to reduce the risk of accidental detonation due to heat, shock, or impact. Unlike traditional munitions, which can be highly sensitive to such stimuli, insensitive munitions are engineered to remain stable and safe under extreme conditions, including fire, fragmentation, or other physical stresses.
MEI Mercury refers to a line of coin and bill acceptors produced by MEI (Mars Electronics International), which is a company that specializes in payment systems and automated service equipment. MEI Mercury acceptors are designed for use in various vending machines, gaming machines, and other automated services where cash transactions are processed. These devices typically feature advanced technologies for detecting and authenticating coins and bills, ensuring secure and accurate transactions.
A pinfire cartridge is a type of ammunition that was prevalent in the 19th century. It was one of the earliest forms of self-contained cartridges, which combine the bullet, powder, and primer in a single unit. The pinfire cartridge features a pyrotechnic primer that is activated by a pin on the firearm's hammer striking the exposed pin on the cartridge's side. When struck, the pin ignites the primer, which in turn ignites the gunpowder and fires the bullet.
A primer in firearms is a small device that ignites the gunpowder in a cartridge when struck by the firing pin or hammer of a firearm. It is a crucial component of ammunition, as it initiates the combustion process that propels the bullet down the barrel. Primers come in different types, including: 1. **Boxer Primers**: Commonly used in modern ammunition, these primers have a single flash hole and are typically found in centerfire cartridges.
Reverse bungee is an adventure activity that combines elements of bungee jumping and a bungee cord system to create a thrilling experience. In a reverse bungee setup, participants are launched into the air rather than jumping down from a height. Here’s how it typically works: 1. **Launch Mechanism**: Participants are seated in a capsule or harness that is attached to a powerful bungee cord system. This system is anchored to a fixed point on the ground.
Rockin' Tug is a family-friendly amusement ride often found in theme parks and amusement parks. It typically features a circular platform with several tugboat-shaped cars or seats that move up and down and sway side to side, mimicking the motion of a tugboat on the water. The ride usually has a nautical theme and is designed to simulate the experience of being on a sea adventure, making it especially appealing to young children and families.
A slug, in the context of projectiles, refers to a solid projectile typically used in shotgun ammunition. Unlike conventional shotgun pellets, which are small and spherical, a slug is a single, large piece of metal, often made of lead or another dense material. Slugs are designed for greater range and accuracy compared to shot pellets, making them suitable for hunting large game or for scenarios where more penetration and stopping power are required.
Amur Oblast is a region located in the Russian Far East. It is bordered by several geographical features and encompasses a variety of landscapes. Here are some key aspects of the geography of Amur Oblast: 1. **Location**: Amur Oblast is situated in eastern Siberia, and it shares borders with China to the south. The Amur River, which forms part of the border with China, is a significant geographical feature of the region.
"Spall" can refer to a few different contexts, depending on the subject matter: 1. **Engineering/Material Science**: In this context, spalling refers to the process where layers or fragments of material break off from a surface. This often occurs in concrete or masonry structures due to factors like thermal stress, freeze-thaw cycles, or impact. For example, spalling can happen on pavement or building facades, where pieces of the material flake away.
A stripper clip is a loading device used primarily for feeding ammunition into the magazines of certain firearms, particularly military rifles. It consists of a small metal or plastic strip that holds a number of cartridges in a row. The purpose of a stripper clip is to facilitate faster reloading of the magazine by allowing multiple rounds to be loaded simultaneously. To use a stripper clip, a shooter typically aligns the clip with the magazine opener and presses down, which pushes the cartridges off the clip and into the magazine.
www.tritoncycles.co.uk/urban-bikes-c4/hybrid-c30/trek-fx-3-equipped-urban-bike-2021-p39860/s102315 XL color Dnister Black. £675.00 plus £35.00 delivery. Disc breaks, 2x9 gears. Bought 2023 on a bit of a sale.
Specs upon buying:
Weight after bought measured differentially on bathroom scale: 13.5 kg
Gears: 11-36T on back, 46-30T on front. So min speed is 30/36 = 0.83 and max is 46/11 = 4.18, so range is 4.18 / 0.83 ~= 5. Compared to Kross which was 11-32 on back vs 48-28 on front, so min 28/32 = 0.875 and max 48/11 = 4.36. So the ranges are very comparable! This confirms Ciro's suspicion that 3 speeds on cranckset is just useless.
I was sized just at the lower limit of XL, but decided to go for it. The seatpost goes all the way into the tube, which is a good thing, might help with noises?
Frame serial under bottom bracket: WTU173C0374S. Registered at: www.bikeregister.com/
Initial impressions:
I'm unable to place a U-lock carrier on this bike in a way that doesn't block one of the two bottles inside frame, or hits leg on if on side. Tried both Kryptonite and Abus ones I have lying around. Shame. Also the Topeak MTS Trunkbag does not fit well on the pannier rack, it is not wide enough to strap: 11cm outer width, 9cm inner width, same geometry as that of the Liv bike.
Log:
2025-09-30: kickstand broken while taking it on car. Proceeding to buy Bontrager Rear Mount Adjustable Kickstand www.trekbikes.com/gb/en_GB/equipment/bike-accessories/bike-kickstands/bontrager-rear-mount-adjustable-kickstand/p/36015/ 20 pounds + 4 delivery. The new kickstand is slightly different from the previous one, it is less slick looking, but perhaps a bit more sturdy, notably the little arm is shorter which might help prevent the previous failure mode. It came with 3 types of screws, but the two of correct diameter were a bit shorter or longer than the old ones so I just kept the old ones.
2025-09-13: chain reached 0.75, rebuying KMC X9. x9 9 speed chain 114 links. www.amazon.co.uk/dp/B07J38GX7L
2025-08: rear mudgard broke in the exact same way as last time, so I'm saying fuck this bullshit and I just fixed it up with some wire which will likely be more resistant than the shitty metal thing they had.
2025-06-26: I suddenly lost the ability to shift the front gear, cable seemed fine, upon inspection I noticed that the pedal could move sideways. Maybe linked to screeching sound that has been coming from that area for a while. As per www.youtube.com/watch?v=cPQyQnNdews leading to www.youtube.com/watch?v=QqBtB8Kyl2U this is a different system from the Kross one, two piece compression slotted rather than 3 piece. The side to side issue is mentioned precisely at: youtu.be/QqBtB8Kyl2U?t=357 Buying the standalone removal tool: www.amazon.co.uk/Professional-Extracto-Compatible-Hollowtech-Maintenance/dp/B0DP6QF11X Fixing it fixed the shift issue, but I noticed that the little plastic piece was broken. Also a few days later it became loose again during a ride, but thankfully I had the tool and put it back mid rid. TODO wanted to rebuy it but it's really hard to find... Going to try this one: www.bikeparts.co.uk/products/shimano-altus-fc-mt210-chainset-46-30-9-speed-black-170-mm-w-o-chainguard 175 mm and see if it comes with both arms. Bought it. has both arms. But I can't fit it, appears to be 1 or 2 mm short compared to the other cranck, the new arm does go on the old crank. There is a small rubber seal that is perhaps not too well inserted which might be to blame? Fuck my life! On the old one, it seems to be fully inserted into a tight hole. I didn't manage to insert the new one enough to make it fit, but if I remove it then it fits... just removing it for now then, how important could that be? Famous last words. Web says 12-14 nM torque on holding screws.
2025-06: rebuying 2x Shimano B05S brake pads, breaking is not too great and I don't want to repeat last year's episode of on-road failure. Will also be bleeding for the second time, God help me. The old pads weren't too bad, but I replaced them anyways. The bleeding was a failure and the brakes were too soft to be useful at the end, fuck. Went to two bike shops, both said bleeding not too bad, one said likely problem was contamination/friction issues. Tried cleaning rotors further, improved. Buying sandpaper and new rotors as well 2x SHIMANO SM-RT26 6-Bolt Disc Rotor and also got two more brake pads, totalling 3 new before I start putting them in with new rotor.
2025-04: rear shift cable snapped near shifter when going over a cattle grid, was already a bit off in the previous days after last adjust I then noticed. I'll buy a SHIMANO Gear Inner Wire Y60098070 on Amazon and might pass by bike shop as well I'll see.
2025-03: rear middle metal connection broke off read mudguard. Rebuying £21.04 from: www.tritoncycles.co.uk/frames-forks-c6/frame-fork-spares-c152/eurofender-snello-700c-fenders-46mm-rear-p33330/s93941 Quite disappointed with that, didn't come with any screws, though perhaps these are frame dependant. And the drilling was a bit different, this model seems to be intended to have some wiring passing inside via some rubber tubes that I removed, and unfortunately the hole on front was too high up and didn't match up with the screw hole on frame. I just removed the broken metal piece from it and put it on the old mudguard.
2024-09: buying CHUMXINY Brake Bleed Kit: www.amazon.co.uk/dp/B0CXDQ2S1S I hope I don't regret this. But I can't find an original one on Amazon either so... £12.74. Quality is a bit crap but seems to work. The 7mm wrench however is so bad that it can't unscrew a 7mm nut.
2024-09: chain reached 0.75, rebuying KMC X9. x9 9 speed chain 114 links: www.amazon.co.uk/dp/B07J38GX7L
2024-09: when going down a hill in intense breaking, noise started coming from back disk brake. Tried to adjust, but made it worse, had to bail out on nearby bike shop. Readjusted, told me to replace back pads and likely bleed. Bought two Shimano B05S brake pads to replace the B01S that came with the bike, Internet says compatible. Brake maintenance finally caught up with me, it was a great summer and I kept putting it off. Changed just the back one for now, front still has life it seems.
2024-06: noticed a sideways lump on back tyre between spoke 23 and 24 when washing. The only sign of damage was internal near grip part, I could see some clear shearing... God those tyres are crap, or at least crap to what I've subjected them. Inner tube and outside seem perfect, so weird. If only the Schawlbe had worked! But OK now I'm forced to get something new and better, thinking:They had a Schwalbe Marathon Plus 700x35c (non-Tour, as that one didn't fit as per previous experiment) on the shop and I went for it. They said 35c was the maximum recommended for that mudgard which is a bit of a shame, but good to know. Also getting one from Amazon to match on front as shop only had one.
2024-04: micropuncture on front tube? Could not identify during ride, refilled and was OK to get home. Almost no pressure in middle of ride. Passed through some deep water which may have made things worse? Had a small pice of glass-like material stuck in tyre, but didn't seem to penetrate? One day and a half later, was full empty again after full fill without riding, so confirming micropuncture theory. Buying 2x Conti Tube Cross 28 (700C) presta inner tubes.
Tried to put a spare Schwalbe Men's Marathon Plus Tour 700x40C on the bike to get better stability. It seemed to fit the wheel quite well, but unfortunately failed to go well in the fork because it was too tall and hit the mudgard. Without mudgard it might work. Measured height was 6cm for Schwalbe vs 5.3cm for the stock one.
2024-02: another broken spoke... what crappy weak wheels!!! Bought Bavel 290 mm spokes 36pcs 14G J Bend Silver. Broken position was 22nd clockwise from inner tube valve hole.
2023-12: chain reached 0.75, rebuying KMC X9. x9 9 speed chain 114 links.
2023-12: broken spoke! Also had to replace nipple because broke inside nipple. At least learned how to change tire at last.
2023-05: rebuying another Topeak Aero Wedge saddle bag for this new bike
2023-05: 2x Elite custom race cage water bottle frame cages, felt great, much better than those on the Kross! www.elite-it.com/en/products/bottle-cages/fibre-reinforced-material-frp/custom-race
2023-05: ParkTool TR1 tyre levers + GP-2 super patch kit
2023-05: Kask Rapido Medium Black/Yellow fluo helmet, got a more racy helmet too! 69 pounds, way more any previous helmet I've owned: www.kask.com/en/cycling/helmets/rapido_24_2.htm
2023-05: Lezyne V-Pro 10 multi-tool ride.lezyne.com/products/v-pro-tool No spoke wrench unfortunately.
Initial equipment:
Annotated copypasta:
Weight limit: This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb)
The Neukirch–Uchida theorem is a result in algebraic number theory, specifically concerning the relationship between certain Galois groups and the structure of algebraic field extensions.
Telescoped ammunition is a type of ammunition design in which the projectile is partially or fully enclosed within the cartridge case, allowing for a more compact design. This approach reduces the overall length of the cartridge, making it easier to handle and transport, while also allowing for potential improvements in weight and stability.
Tubes and primers are components related to ammunition, particularly in the context of firearms and reloading. ### Tubes 1. **Tubes** can refer to various types of containers used in ammunition: - **Shotgun Shell Tubes:** These are often used for holding shotshells before they are loaded into a shotgun. In some cases, it can refer to the tube of a shotgun itself, which holds shells in a magazine.
The term "Wildcat cartridge" refers to a type of ammunition that is not commercially produced and typically involves the modification of existing cartridges or the design of new ones tailored for specific performance characteristics. Wildcat cartridges are often developed by handloaders or firearms enthusiasts looking to achieve unique ballistic profiles or performance that factory-loaded ammunition does not offer. Wildcat cartridges arise from various motivations, including the pursuit of improved accuracy, better terminal ballistics, or specialized applications such as hunting or target shooting.
A thermobaric weapon, also known as a fuel-air explosive (FAE), is a type of explosive that uses oxygen from the surrounding air to generate a high-temperature explosion. Unlike conventional explosives, which detonate almost instantaneously, thermobaric weapons typically consist of a fuel component that is dispersed into the air before being ignited. This creates a larger and longer-lasting blast wave and can achieve a significant overpressure in the vicinity of the explosion.
Bioabsorbable metallic glass refers to a class of materials that are designed to be used in biomedical applications and can dissolve or degrade in biological environments over time. These materials typically consist of metallic glasses that possess unique properties such as excellent mechanical strength, high corrosion resistance, and good biocompatibility.
Molar quantities refer to measurements related to the mole, which is a fundamental unit in chemistry. The mole is defined as the amount of substance that contains as many elementary entities (typically atoms or molecules) as there are atoms in 12 grams of carbon-12. This number is known as Avogadro's number, approximately \(6.022 \times 10^{23}\) entities per mole.
Colligative properties are physical properties of solutions that depend primarily on the number of solute particles in a given quantity of solvent, rather than the identity of the solute. These properties are important in understanding how solutes affect the behavior of solutions. The four main colligative properties are: 1. **Vapor Pressure Lowering**: The presence of a non-volatile solute reduces the vapor pressure of the solvent.

Pinned article: Introduction to the OurBigBook Project

Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
We have two killer features:
  1. topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculus
    Articles of different users are sorted by upvote within each article page. This feature is a bit like:
    • a Wikipedia where each user can have their own version of each article
    • a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
    This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.
    Figure 1.
    Screenshot of the "Derivative" topic page
    . View it live at: ourbigbook.com/go/topic/derivative
  2. local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:
    This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
    Figure 2.
    You can publish local OurBigBook lightweight markup files to either https://OurBigBook.com or as a static website
    .
    Figure 3.
    Visual Studio Code extension installation
    .
    Figure 4.
    Visual Studio Code extension tree navigation
    .
    Figure 5.
    Web editor
    . You can also edit articles on the Web editor without installing anything locally.
    Video 3.
    Edit locally and publish demo
    . Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension.
    Video 4.
    OurBigBook Visual Studio Code extension editing and navigation demo
    . Source.
  3. https://raw.githubusercontent.com/ourbigbook/ourbigbook-media/master/feature/x/hilbert-space-arrow.png
  4. Infinitely deep tables of contents:
    Figure 6.
    Dynamic article tree with infinitely deep table of contents
    .
    Descendant pages can also show up as toplevel e.g.: ourbigbook.com/cirosantilli/chordate-subclade
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact