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Collimatrix last won the day on July 25

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About Collimatrix

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  1. Collimatrix

    General news thread

    Alzoc, didn't you mention at some point that Le Pen and/or her allies had some longstanding issues with corruption?
  2. Collimatrix

    General AFV Thread

    Cheaper, wider FOV and less distortion are the advantages I've heard. Making a really optically excellent periscope is a non-trivial problem.
  3. Collimatrix

    Designing A Rifle From Scratch(ish)

    Bullpups have to be designed from the start as such. Ideally, a bullpup would have almost the entire mass and bulk of the moving parts group in front of the breech. E.G. an Oerlikon 20mm cannon. The majority of bullpup rifles start with very orthodox breech mechanism designs, and end up mediocre to bad as a result.
  4. Collimatrix

    T-80 Megathread: Astronomical speed and price!

    Welcome to SH!
  5. 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.
  6. Collimatrix

    Designing A Rifle From Scratch(ish)

    I'm holding one right now.
  7. 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.
  8. 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."
  9. 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!"
  10. Collimatrix

    Terror Attacks and Active Shooter Events Thread

    Shooting at a Rite Aid distribution center
  11. 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.
  12. Collimatrix

    Competition: Tank Design 2239

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

    Competition: Tank Design 2239

    According to the 1950 US Army guide to spaced armor design, yes.
  14. 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.