Registrace nového uživatele     Návod     Kluby     Archív  Lopuchu     Lopuch.cz  

Lopuch, server nejen
pro botaniky

Lopuch.cz

Jméno:
Heslo:
Podpora LCD:
 
Klub Zbrane [ŽP: 24 týdnů] (kategorie Věda a Technika) moderují Al, El_Diablo, ocs, themajkl.
Archiv
Domovská stránka aktualizována 2.12.2019 04:02
Omlouvám se ale bohužel jsem musel zakázat psaní anonymům, protože nám tu nějaký sabotér vložil "hack" kvůli kterému nešlo přispívat nikomu. Nevím jestli to pomůže, ale snad nad tímto darebákem budeme mít větší kontrolu.
Srdečně zveme do tohoto klubu všechny, kteří se zajímají o zbraně, střelbu a všechno, co s tím souvisí a chtějí si o tom všem v přátelské atmosféře povídat, poradit druhým, nebo se naopak chtěji zeptat na radu.

Kdo chce vystupovat anonymně (tj. bez registrace na Lopuchu), musí si vymyslet nějaké jméno nebo přezdívku a psát ho do každého svého anonymního příspěvku.

Každého přece musíme v diskusi nějak oslovovat, aby bylo jasné, kdo na koho reaguje. Kdybychom měli odpovídat několika bezejmenným anonymům najednou, byla by diskuse značně nepřehledná. Takže, kdo neuvede jméno či přezdívku, ten jako by nebyl.

Jak psát klikatelné odkazy:
 <a href="http://adresa stránky(URL)">Název stránky</a>


Úložiště obrázků:
  • 1iq.cz Bezplatné úložiště obrázků a rychlé sdílení printscreenu.
  • Bezplatné úložiště obrázků imgway.cz
  • Bezplatné úložiště obrázků imgbox.com



  •  Výslovně zakázány jsou pouze urážky (je jedno koho), nesmyslné hádky a extrémně vulgární příspěvky.

    Video Alova prototypového samopalu
    Early Automatic Pistol Cartridges - What, When & Why?
    Cowboys



    Cvičně zprovozněna homepage ... :
      Nastavení klubu     Nastavení práv     Homepage     Anketa     Přítomní     Oblíbené     Lopuch     Kategorie  
    autor: 
    text: 
    vyplnit a 
    Help

    Nemáte právo psát do tohoto klubu.

    [ 17010 ] <Novější  <<<Nejnovější  Nejstarší>>>  Starší>  
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 8.7.2024 17:51 - Klub Zbrane (22:45) 34349
    Wieger 942: East Germany Makes a 5.56mm AK

    East Germany purchased a license for production of the AK-74 in 1981, but that license was for domestic use only. There was an apparent market for export production AKs in the western 5.56mm cartridge, and so the East Germans developed their own new rifle to fill that demand and bring in some much-desired hard currency. That new project would be designated the 940 series of rifles, with fixed-stock 941, folding stock 942 (the subject of this video), compact carbine 943, squad automatic 944, and designated marksman's 945. Development began in 1985 and the first prototypes were ready in 1988. The plan was to make 100,000 rifles the first year and 200,000 per year thereafter, but the fall of the Berlin Wall ended those (very optimistic) plans.

    In total, it appears that about 10,000 of the Wieger (named after the town of Weiss, where they were manufactured) rifles were made. These consisted of about 7500 model 941 rifles for India and about 2000 folding-stocked 942 rifles for Peru. The last ones were sold in 1992, and they are quite scarce to find today.

    Interestingly, there is a batch of clones in the United States. The InterOrdnance company produced reproduction Wieger furniture, and installed it on a version of the Cugir SAR-3 5.56mm AK rifles made specifically for this purpose. Those are a bit scarce, but can still be found in the US.
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 7.7.2024 13:00 - Klub Zbrane (22:45) 34348
    Mendoza 1934: Mexico's Domestic LMG

    Rafael Mendoza was Mexico’s premier domestic arms designer, and the Model 1934 LMG is probably his most successful design. He began work on it in 1929, and it entered testing with the Mexican Army in 1932. It was formally accepted by the Mexican Army in 1934 (hence the designation) and would serve into the mid 1950s. Mendoza was a private civilian, but production of the gun took place in the state-owned National Arms Factory in Mexico City, with Mendoza himself receiving no royalty or licensing fees. Instead, his company was given a contract to make the magazines for the guns.

    Mechanically speaking, the Mendoza 1934 is a gas-operated, rotating bolt, magazine-fed LMG chambered for 7mm Mauser (the standard Mexican military cartridge at that time). Production actually began in 1939, and would continue into the 1950s with about 5,000 made in total. The main purchaser was the Mexican military, but some were also exported to Guatemala, Costa Rica, and Cuba (both Batista and Castro). With he end of World War Two, there was a huge glut of American surplus arms, and Mexico adopted the BAR and the Browning 1919, which replaced the Mendoza in Mexican front line service.

    If you are interested in more details about the Mendoza 1934 or any of Rafael Mendoza’s other designs, I highly recommend Luis Eduardo Gonzales’ book on Mendoza, available in English in both print and Kindle versions:
    https://amzn.to/3b7MyJ3
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 7.7.2024 12:46 - Klub Zbrane (22:45) 34347
    AnimaceHow a Mondragón Rifle Works
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 6.7.2024 13:48 - Klub Zbrane (22:45) 34346
    Tour of Sport Systems Dittrich: Reproduction WWII German Rifles

    I recently had a chance to visit Sport Systeme Dittrich, a firm in Germany that manufactures high quality reproductions of German World War Two small arms. They were the manufacturers of the PTR-44 Sturmgewehr copies about 10 years ago, and they are now working with a US partner (DK Production Group) to import their guns into the US. The first one to be ready here was the BD-38 (copy of the MP38), and the StG-44 will be the next one coming...
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 6.7.2024 10:12 - Klub Zbrane (22:45) 34345
    How a Stechkin Automatic Pistol Works


    Wikipedia: The Stechkin or APS (Avtomaticheskiy Pistolet Stechkina = Автоматический Пистолет Стечкина) is a Soviet selective fire machine pistol chambered in 9×18mm Makarov and 9×19mm Parabellum introduced into service in 1951 for use with artillery and mortar crews, tank crews and aircraft personnel, where a cumbersome assault rifle was deemed unnecessary. Seeing service in a number of wars such as the Vietnam War, Russo-Ukrainian War and Syrian Civil War. The APS was praised for its innovative concept and good controllability for its size. However, the high cost of the weapon, complex and time-consuming machining, combined with a limited effective range, large size and weight for a pistol, and fragile buttstock have been mentioned as a reason to phase it out of active service in favour of assault rifles such as the AKS-74U. The pistol bears the name of its developer, Igor Stechkin.

    Type Machine pistol
    Place of origin Soviet Union
    Service history
    In service 1951–present
    Used by See Users
    Wars Vietnam War
    Shaba II[1]
    Soviet–Afghan War
    Tuareg rebellion (1990–1995)
    Chechen-Russian conflict
    War in Afghanistan
    South Ossetia War
    Russo-Ukrainian War
    Syrian Civil War
    Production history
    Designer Igor Stechkin
    Designed 1948
    Manufacturer Vytatsky Polyany Machine-Building Plant
    Produced 1951–1958 (APS)
    1972–1973 (APB)
    Variants APB silent variant
    Specifications
    Mass 1.22 kg (2.69 lbs)
    Length 225 mm (8.86 in)
    Barrel length 140 mm (5.51 in)
    Cartridge 9×18mm Makarov, 9×19mm Parabellum (Romanian Pistol Md. 1998 variant)
    Action Blowback
    Rate of fire 750 rounds/minute
    Muzzle velocity 340 m/s (9×18mm Makarov)
    Maximum firing range 200 m
    Feed system 20-round detachable box magazine
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 5.7.2024 20:05 - Klub Zbrane (22:45) 34344
    Pistols Fit For a King: Early Percussion Revolvers with Curatorial Assistant Christian Wellard


    Most modern revolvers can trace their lineage all the way back to Colt's designs of the 1840's, but not these...

    In this episode of Up In Arms, Curatorial Assistant Christian Wellard is looking at a beautiful set of early percussion revolvers belonging to King Ferdinand II of Sicily.
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 5.7.2024 19:48 - Klub Zbrane (22:45) 34343
    Romanian Model 1879 Martini-Henry Rifles & Carbines

    Following its experience in the Russo-Turkish War, the Romanian Army was quite impressed by the Martini-Henry rifle in Turkish service. Unlike so many Western observers who were taken by the Winchester repeating rifles that actually didn't make much battlefield impact, the Romanians recognized the all-around quality of the Martini. So after the war when looking to equip their own newly independent army, they went to Britain for Martinis. They were not able to get rifles made in Britain, but did purchase a license to make the rifle in .45 Gatling, which they took to a factory in Witten, in the German state of Wurtemburg. This factory was newly opened, run in part by Friedrich von Martini himself - so what better place to get Martini rifles?

    An initial contract for 60,000 rifles and 8,000 carbines was accepted by the factory and delivered fairly quickly. When the Romanians came back for more guns the factory had gone bankrupt, however. Subsequent orders were instead made form OEWG Steyr in Austria. In total, Romania acquired about 145,000 Martini long rifles and between 12,000 and 18,000 carbines. They were replaced by the Model 1893 Mannlicher in the 1890s, and thus were never used as a front-line rifle in any major combat. They served in World War One in a secondary role only.

    Thanks to the King Ferdinand I Military Museum for giving me access to these examples and to A.N.C.A. for coordinating the visit! If you are in Bucharest, make sure to stop in and visit the museum:
    https://www.muzeulmilitar.ro/en/
    ocs ocs sine ira et studio - OCSite 3.7.2024 23:02 - Úvodní stránka (22:51) 34342
    Amen to that!
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 3.7.2024 17:13 - Klub Zbrane (22:45) 34341
    ocs [34339]: Furt je co objevovat...
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 3.7.2024 17:12 - Klub Zbrane (22:45) 34340
    Landstad 1900: A True Semiautomatic Revolver

    http://www.headstamppublishing.com
    Headstamp Publishing - the best publisher of exhaustively researched and beautifully photographed firearms reference books.

    The Landstad Model 1900 is a magazine-fed, semiautomatic revolver designed by Norwegian Halvard Folkestad Landstad, who lived in Kristiana (now called Oslo). He designed the gun on his own dime, and presented it to military trials in 1901, which it failed miserably. The gun has a six-round detachable box magazine of 7.5mm Nagant cartridges, a two-chamber cylinder, and a simple blowback action. Its firing cycle is to chamber a round from the magazine into the bottom cylinder chamber by manually cycling the action. The trigger is a long double-action type which rotates the cylinder 180 degrees so the cartridge is in line with the barrel and releases the striker to fire the round. Upon firing, the bolt cycles open, extracting and ejecting the empty case, rechecking the striker, and chambering a new round from the magazine into the bottom of the cylinder.

    The purpose of this overly complex system was to provide a semiauto action which did not ever leave a live cartridge under the striker, in the name of safety. Only one example was made, and its bolt broke after just 5 or 6 rounds fired. It was repaired almost immediately, but the Norwegian military had was not interested in further development, and nothing more came of the program. A few years later in 1908 Norway would institute a more serious semiauto pistol trials program which led to adoption of the Kongsberg 1914 (a slightly modified Colt 1911).

    Thanks to Jan for allowing me to disassemble and film this one-of-a-kind piece for you!

    ocs ocs sine ira et studio - OCSite 2.7.2024 23:25 - Úvodní stránka (22:51) 34339
    (Tak tyhle Beltonky jsem opravdu neznal. Dík!!!)
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 1.7.2024 19:49 - Klub Zbrane (22:45) 34338
    Belton Repeating Flintlock: A Semiautomatic Rifle in 1785

    In 1785, Joseph Belton (an American inventor) and William Jover (an English gunmaker) sold 560 repeating flintlock rifles to the British East India Company. The guns were a very remarkable design which used a detachable magazine tube of 7 rounds stacked in series with a seven sequential touch holes. When the first round was fired, the flintlock ignited a piece of "portfire" slow match that would burn for about one minute. Pulling the trigger would move the portfire rearward one touch hole at a time, firing each in sequence as long as it remained burning. In this way, Belton advertised the gun as being able to fire 21 rounds in a single minute (using three preloaded magazine tubes). If the portfire burned out, it could be replaced and the flintlock reprimed and recocked. This was a truly impressive technological feat in 1785!

    Belton had been working on firearms designs since 1758, and he actually got an order for 100 roman-candle-type repeaters from the American Continental Congress in 1777 - but there were pricing disputes and the order was never fulfilled. The British military examined the guns, but declined to purchase any. The 560 guns made for the East India Company (200 muskets, 160 carbines, and 100 pairs of pistols) were shipped from England in 1786, half to Madras and half to Bengal. Unfortunately, no further record of their performance has been found and we don't know how well they worked in practice. This example is one of the muskets, with a .665" bore and a 39 inch barrel.
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 29.6.2024 19:58 - Klub Zbrane (22:45) 34337
    How does a rifle works | henry lever action rifle

    *Understanding the Lever-Action Mechanism:*
    The lever-action rifle, a symbol of the American West, is operated by a lever located around the trigger guard. When the lever is cycled, it moves the bolt backward, extracting the spent cartridge and then forward, chambering a fresh round from the magazine⁴. This action is smooth and allows for rapid firing compared to other manual loading methods.

    *The Evolution of Winchester Firearms:*
    Winchester's history is marked by innovation and adaptation. The Model 1873, often referred to as "The Gun that Won the West," was one of the most successful rifles of its day, originally chambered for the .44-40 cartridge¹. Over the years, Winchester has continued to innovate, introducing models like the 1895, which featured a box magazine allowing the use of military and hunting cartridges with spitzer bullets².
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 29.6.2024 13:34 - Klub Zbrane (22:45) 34336
    Animace How a Gatling Gun Works


    Wikipedia: The Gatling gun is a rapid-firing multiple-barrel firearm invented in 1861 by Richard Jordan Gatling. It is an early machine gun and a forerunner of the modern electric motor-driven rotary cannon.

    The Gatling gun's operation centered on a cyclic multi-barrel design which facilitated cooling and synchronized the firing-reloading sequence. As the hand wheel is cranked, the barrels rotate and each barrel sequentially loads a single cartridge from a top-mounted magazine, fires off the shot when it reaches a set position (usually at 4 o'clock), then ejects the spent casing out of the left side at the bottom, after which the barrel is empty and allowed to cool until rotated back to the top position and gravity-fed another new round. This configuration eliminated the need for a single reciprocating bolt design and allowed higher rates of fire to be achieved without the barrels overheating quickly.

    One of the best-known early rapid-fire firearms, the Gatling gun saw occasional use by the Union forces during the American Civil War, which was the first time it was employed in combat. It was later used in numerous military conflicts, including the Boshin War, the Anglo-Zulu War and the assault on San Juan Hill during the Spanish–American War. It was also used by the Pennsylvania militia in episodes of the Great Railroad Strike of 1877, specifically in Pittsburgh. Gatling guns were even mounted aboard ships.

    Type Rapid-fire gun, hand cranked Machine gun
    Place of origin United States
    Service history
    In service 1862–1911
    Used by United States
    Russian Empire
    British Empire
    France
    Empire of Japan
    Qing Empire
    Siam Empire
    Korean Empire
    Chile
    Peru
    Tokugawa Shogunate
    Wars American Civil War
    Anglo-Zulu War
    Indian Wars
    Spanish–American War
    Philippine–American War
    Boxer Rebellion
    War of the Pacific
    Boshin War
    Production history
    Designer Richard Jordan Gatling
    Designed 1861
    Manufacturer Eagle Iron Works
    Cooper Firearms Manufacturing Company
    Colt Manufacturing Company
    American Ordnance Company
    Produced 1862-1903
    Specifications
    Mass 170 lb (77.2 kg)[1]
    Length 42.5 in (1,079 mm)
    Barrel length 26.5 in (673 mm)
    Crew Four-man crew
    Cartridge .30-40 Krag
    .45-70 Government
    .30-06 Springfield
    .43 Spanish
    11x60mm Mauser
    Caliber .308 inches (7.8 mm)
    Barrels 6–10
    Action Crank handle
    Rate of fire 200 rounds per minute in .58 caliber, 400-900 rounds per minute in .30 caliber
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 27.6.2024 20:15 - Klub Zbrane (22:45) 34335
    The M9A1 Bazooka: Now With Optics and Quick Takedown

    The Bazooka - or rather the Launcher, Rocket, 2.36”, M1 - was introduced by the United States in 1942, the result of a fast development by two Army officers, Captain Leslie Skinner and Lt. Edward Uhl. The US has no infantry antitank weapon at that point, and it had become quite clear that such a thing was needed. The Bazooka offered a theoretical effective range of 300 yards, throwing a 1 pound hollow-charge projectile capable of penetrating 4 inches of armor plate. The 2.36 inch bore measurement, incidentally, was chosen as the inch equivalent of 60mm, to match the common mortar size.

    In October of 1943, an improved M9 version was introduced, using a magnet firing system instead of the unreliable batteries of the original. A followup M9A1 variant was adopted in June of 1944, which broke down into two parts for easier transportation, and the T90 optical sight was added in September of 1944. These were effective weapons against armor early in the war, but the heavier tanks introduced late in the war were too heavily armored for the Bazooka to be very effective - although it remained a valuable tool for attacking pillboxes and other fortified positions. It would continue to see extensive service in the Korean War, although its limited armor penetration was particularly acute in that conflict.

    Note that the inert M6 rocket in the video is not being sold with the Bazooka.

    [ 17010 ] <Novější  <<<Nejnovější  Nejstarší>>>  Starší>  

    (c) 2001-2011 Lopuch.cz   
    Kontakt