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Sturgeon's House


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Everything posted by Collimatrix

  1. Google is well on the way to ruling the world. This does not mean that they don't make mistakes. We'll start with their messenger, which I greatly appreciated, but they did not. Apparently I'm not the only one who thinks so.
  2. Collimatrix

    T-80 Megathread: Astronomical speed and price!

    Welcome to SH!
  3. Collimatrix

    Designing A Rifle From Scratch(ish)

    That's what I figured. The hinge hole consists not only of the end plate that's welded on to the front of the magwell, but also of an extension of the receiver itself. The hinge hole is twice as thick as any other point on the rifle's receiver. If the hinge point is a specific weakpoint, then you might as well throw up your hands and say that the entire damn rifle is flimsy. But I would expect the stock hinge, last round hold open, handguard, or the really dodgy welds at the back of the upper receiver to go first.
  4. Collimatrix

    Designing A Rifle From Scratch(ish)

    I'm holding one right now.
  5. Collimatrix

    Designing A Rifle From Scratch(ish)

    On the AR-180B reproductions made by Armalite, the lower receiver hinge point is quite weak. On the originals it's fairly beefy though. Biggest complaint on the originals is the folding stock mechanism; that thing is just a pile of crap. In general though, the AR-18 was cheap and not very good. There were several good ideas that a lot of people lifted, like the broad design of the bolt carrier, but you'll note that very few countries elected to make complete clones.
  6. Collimatrix

    Books About Tanks

    Per the Sabot Publications book, the M60A2 was called "A2" or "A Deuce." One crewmember recalls calling them "stump" while M60A1s were "needledicks."
  7. Collimatrix

    Books About Tanks

    I picked up Sabot Publications books on the M60A2, both volume 1 and volume 2. The books are mostly aimed at modelers and consist mainly of exterior shots of the tanks on exercise in Germany. However, there are also some interior shots, and a bit of technical discussion of the vehicles. The authors are also quite emphatic from interviews with former crew that, while the tank was in service, nobody called it a "starship!"
  8. Collimatrix

    Terror Attacks and Active Shooter Events Thread

    Shooting at a Rite Aid distribution center
  9. Collimatrix

    The BFR Thread

    Yeah, modular cargo modules that can be removed in order to accommodate bulkier vacuum-optimized nozzles if I remember the surreal press conference correctly.
  10. Collimatrix

    Competition: Tank Design 2239

    Yep, historical APCR got wrecked by spaced armor.
  11. Collimatrix

    Competition: Tank Design 2239

    According to the 1950 US Army guide to spaced armor design, yes.
  12. Do you have a link to the entire chart? I googled for it, but in vain. IIRC, it had some strange ideas, like M47 was slightly better than M48. But I would expect the Soviets to have a pretty good idea about their own tanks.
  13. Aren't you supposed to be the Ukranian tanks expert? You tell me why the object 476 was never mass produced.
  14. IIRC, there was a Soviet assessment of their tanks and NATO tanks that concluded that the T-80U was about 10% better than the T-72B, but it was also about twice as expensive. The T-80U is somewhat faster than a T-72B, its autoloader reloads the gun faster and carries more rounds, and... other than that, they seem fairly comparable. The T-80U probably had better hull armor than the early T-72B, but the later T-72B had a revised hull armor array made of NERA that may have been superior to the T-80U's hull array of alternating layers of steel and phenolic-impregnated fiberglass. However, the T-80U had the improved kontakt-5 ERA that gave additional protection against APFSDS ammunition. Information comparing the turret armor arrays and fire control systems is hard to find. Oh, you're going to fit in just great here, I can tell.
  15. Collimatrix

    Competition: Tank Design 2239

    Those are some really small fins relative to historical MCLOS! Also, you need this shirt.
  16. It occurred to me, while reading LoooSeR's account of how a bunch of peasants are clobbering the expensive Saudi military, that perhaps it was time to take a good, hard look at the Kingdom of Saudi Arabia. What a vibrant and wonderful country! Saudi Arabia leads the world in incest: Saudi Clerics have novel theories of science. They have a diversified, modern economy, which is definitely not unstable: Including a booming agricultural sector! What a swell place, with enlightened views on women!
  17. Collimatrix

    Britons are in trouble

    Did he have any good stories?
  18. Collimatrix

    StuG III Thread (and also other German vehicles I guess)

    Holy shit, that Ferdinand needed to be salvaged with a broom after whatever hit it.
  19. So, I'm snowbound in a little motel in Rawlins, WY. It's a dinky, creaky old place with no internet, no running water, and it's built on an old Indian burial ground. Anyway, I was thinking about music. I listened to The Pierce's Thirteen Tales of Love and Revenge on the way down here, end to end. Holy crap, this is a superb album. Allison and Catherine Pierce are both excellent singers with some really excellent harmonies (but not so often it gets dull). Instrumentation and melodies are varied too, but not so much it feels thrown together. And wow, the lyrics. The probity of the album's concept is immaculate. It oozes jealousy, loss, lust and toxic sexuality worthy of an opera. A taste:
  20. Collimatrix

    Gun Science Library

    Advanced Aluminum Armor Alloys
  21. Collimatrix

    Scale Models Megathread

    The tank is definitely a Merkava Mk 3.
  22. Collimatrix

    Competition: Tank Design 2239

    The TL:DR of this 1950s report on spaced armor and other sources I've read is: APCR: Totally fucked by even small stand-off plates parallel to the main armor in hasty add-on packages. Most APCR projectiles had too brittle a core to deal with anything but homogenous armor. HEAT: Early HEAT was adversely affected by spaced armor, but by early 1950s level of HEAT projectile optimization it almost ignored it, or even got a slight penetration boost vs spaced armor. Arrays of many thin plates were modestly more effective vs. HEAT. APDS: Adversely affected by spaced armor, but far less than APCR thanks to sheathe designs that protected the core from shattering. APFSDS: Early APFSDS was fucked by spaced armor quite badly, but metallurgical improvements meant that later rounds largely ignored it. APCBC: Effects heavily dependent on the optimization of the spaced armor array and quality of the rounds. Well-constructed APCBC is actually more effective against simple spaced armor arrays than against homogeneous plate. Poorly constructed APCBC suffers against simple stand-off plates almost to the extent that APCR does. Geometrically well-optimized arrays are moderately more effective on a weight basis against APCBC than homogeneous plate.
  23. Collimatrix

    Forum Improvements and Changelog

    I thought I would put this where everyone could see it, since we've finally started doing meaningful changes to the forum, it would be good to document them.
  24. Collimatrix

    Unified Naval Documents Thread

    We need one of these. Notes on German super-battleship design Soviet/Russian document dump US WWII Documents US Navy discussion of cage vs tripod masts 60 Years of Marine Nuclear Power (Soviet Union & Russia)