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Klub Zbrane [ŽP: 24 týdnů] (kategorie Věda a Technika) moderují Al, El_Diablo, ocs, themajkl.
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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.

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    [ 16994 ] <Novější  <<<Nejnovější  Nejstarší>>>  Starší>  
    sven Sven ukaž člověku smrt a smíří se s horečkou 21.8.2024 13:19  34392
    Ono je to - ať chci, či nechci - o kompromisech....
    Původně jsem měl bicí a spošťový mechanismus nesený na těle pohyblivé hlavně, abych vyloučil odpor při napínání kladívka nebo úderníku, aby se nepřenášel na rám zbraně. Ale to by bylo hodně složité. tak jsem šel do kompromisu - spoušťový a bicí mechanismus bude klasika - upevněný na rámu zbraně. ( stejně, i kdybych se na hlavu stavěl, tak odpory při přejezdu tam a zpět závorníku přes náboj v zásobníku neodstraním...)
    ocs ocs sine ira et studio - OCSite 21.8.2024 13:14  34391
    ocs ocs sine ira et studio - OCSite 21.8.2024 13:12  34390
    (Lejna se mají vyvážet na pole, aby to lépe rostlo.)
    sven Sven ukaž člověku smrt a smíří se s horečkou 21.8.2024 13:03  34389
    OCSTo není o dešťovce, ale o bioseptiku - ☺ kadit musím bez ohledu na počasí! ☺
    -----------------
    A dík za podporu, zbývá mi jen doladit geometrii spoušťového mechanismu a jde to do 3D tisku.
    sven Sven ukaž člověku smrt a smíří se s horečkou 21.8.2024 12:57  34388
    ☺ ☺ ☺A svým způsobem to vlastně souvisí i se zdejším klubem - kdybychom měli tenkrát VLASTNÍ atomovku, tak by si to asi SOVĚTI hodně rozmysleli....
    ocs ocs sine ira et studio - OCSite 21.8.2024 12:55  34387
    Sven: udělej si na výročí vstupců konto na okoun.cz, tam je politických kecáren, že až :)

    Stran trativodu nwm, hele, lepší nechat — uděláš to pořádně, a přestane pršet :)

    Ohledně zbraně, držíme palce a těšíme se!

    sven Sven ukaž člověku smrt a smíří se s horečkou 21.8.2024 12:43  34386
    progunKoncem září dám vědět.
    Teď řeším bagr a trativod na chatě.
    --------------
    A za to, že to o 21.srpnu sem tak úplně nepatří, jsem se předem omluvil...
    progun progun www.progun.cz 21.8.2024 09:16  34385
    Co místo toho zbytečnýho blábolu napsat, jak je na tom vývoj zbraně?
    sven Sven ukaž člověku smrt a smíří se s horečkou 21.8.2024 08:39  34384
    Omlouván se,protože tohle patří do klubu POLITIKA, nebo VOLBY, ale v obou mám bohužel ban.
    S napětím očekávám, zda ten náš prezidentskej věšák na kabáty, který má potřebu kecat úplně do všeho, bude mít tu drzost nějak komentovat dnešní neslavné výročí, nebo zaleze raději do nějaké díry...
    Sven
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 19.8.2024 21:33  34383
    WF-54: The Swiss FG-42 Scaled up to 7.5x55

    After World War Two the Swiss needed a new self-loading military rifle to replace their K-31 bolt actions. Two major design tracks followed; one being a roller-delayed system based on the G3 at SIG and the other being a derivative of the German FG-42 at Waffenfabrik Bern. Bern, under the direction of Adolph Furrer, had been experimenting with intermediate cartridges since the 1920s, and they used this as a basis to develop an improved FG-42 using an intermediate cartridge (7.5x38mm). The program began in 1951 and went through about a half dozen major iterations until it ultimately lost to the SIG program (which produced the Stgw-57).

    Today we are looking at one of the later steps in the Bern program, the WF-54. By this point the intermediate cartridge had been discarded in favor of using the standard Swiss GP11 (7.5x55mm). The overall design was a bit simplified as well. The Bern program would continue for two more years after this rifle before ultimately losing out to the SIG 510 for Swiss military adoption.

    Many thanks to the Royal Armouries for allowing me to film and disassemble this rifle! The NFC collection there - perhaps the best military small arms collection in Western Europe - is available by appointment to researchers:
    https://royalarmouries.org/research/n...
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 18.8.2024 21:41  34382
    Why the Nazis spent so much time making a worse STG-44: The MP43/1 with Jonathan Ferguson


    The Sturmgewehr is no stranger to this channel, providing Jonathan with a fair amount of 'emotional support' over the years. This week, Jonathan gets to grips with an extremely rare example with a radically different gas system that only made the STG-44's already excellent design a little bit worse.
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 17.8.2024 16:02  34381
    Welrod .32 at the Range: British SOE's Silent Assassin's Pistol


    I had the chance to take a .32ACP Welrod MkII out to the range for a bit of shooting. These use a combination of baffles and rubber wipes, and the suppressor's effectiveness quickly drops from "fantastic" to merely "very good" after a few shots put a hole in the front wipe. This example already had 2 or 3 rounds through it when I started shooting, and the sound changed from a muffled thump to a more gunshot-like crack over the course of the 8 or so rounds I fired. In practice, this was really not a problem - the Welrod was an assassination tool and not something intended for use in any sort of real gunfight.

    Full video on the Welrod MkIIA:
    • Silent But Deadly: Welrod Mk IIA
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 16.8.2024 19:47  34380
    Animace 12.5 inch RML on Special Small-Port Mounting, Fort Delimara, 1885

    Some British coastal forts were built in critical positions - and as a result would be primary targets for an attacking force. In addition to thick walls, it was necessary to minimise size of the gun-port openings to reduce the risk of shell or small arms fire entering the gun bay. However, a small gun port would restrict the elevation and depression possible from a conventional gun carriage. A special gun carriage was designed that allowed the gun itself to be lifted in its carriage up to 14 inches. This movement allowed the gun to be elevated to 7 degrees and depressed by 4 degrees.

    Forts that were equipped with small-port carriages and platforms were Plymouth Breakwater Fort, Fort Cunningham, Bermuda and Fort Delimara, Malta.

    The 12.5 inch 38 ton RML gun was a mainstay of British coastal artillery in the 1880- 1904 period - powerful enough to combat the major armoured warships of that period. Coastal forts had to depend on Muzzle Loaded guns - they were cheap, reliable, effective, and packed a big punch. While large breech loaded guns entered service in the Royal Navy in 1882, these guns required steam powered hydraulic systems to open the breech, ram the heavy shells, training and elevating. Coastal forts rarely had any powered systems so instead relied on human muscle power.

    This video illustrates the 12.5 inch, 38 ton Rifled Muzzle Loaded gun on a small-port carriage at Fort Delimara. The fort is dug into a high cliff at the entrance to the harbour of Marsaxlokk, an important sheltered deep-water port on the south east end of the main island of Malta.

    The gun drill is similar to my earlier video for the 38 ton gun at Fort Nothe, Weymouth, but shows the operation in a more confined space, the mechanism needed to raise and lower the gun trunnions in its carriage, and also how extra protection was provided by adjustable rope mantlets.

    For further details on the Platform mechanisms, training and running back please look at
    • 12.5 inch RML Technical Details
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 16.8.2024 18:36  34379
    The Experimental SOE Welrod MkI Prototype

    The Welrod was a program to develop a silent assassination pistol for British SOE (Special Operations Executive) late in 1942. It needed to be chambered in the .32 ACP cartridge, be effective to a range of 15m, and have its firing not recognizable as a firearm at 50m distance. The project was led by Major Hugh Quentin Reeves, who developed much of SOE's inventory of gadgets.

    The Welrod concept was ready in January 1943, and it was not quite the Welrod that we recognize today. This initial MkI design used a fixed internal 5-round magazine and a thumb trigger, along with a rifle style bolt action mechanism. Samples were produced in April 1943, and testing showed that it was rather awkward to use. A MkII version was quickly developed in June 1943 with a more traditional style of grip and magazine, and formal trials led to the adoption of that MkII design. Incidentally, this is why the first Welrod produced was the MkII, and the later production version in 9mm was designated the MkI (it was the first mark of 9mm Welrod).

    Eventually many thousands of Welrod pistols were manufactured, and they almost certainly remain in limited use to this day. This example we have today is the only surviving MkI example, however.
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 16.8.2024 18:10  34378
    R20 "Rahe" - Estonia Modernizes its Infantry Rifles


    In 2017, the Estonian military began the process of replacing its infantry rifles. At that time, the primary rifle in use was the Galil, which had been purchased from Israel shortly after Russian occupation ended and Estonia regained its independence in 1992. The Galils had made sense at the time, but now something more modern was desired. Specifically, a pairing of a 5.56mm infantry rifle and 7.62mm DMR rifle which shared the same basic platform. All of the major players in the firearms market responded to the initial Estonian RFP, and from eleven initial proposals the three finalists were H&K (with the 416), Sig (with the 716), and LMT (with their piston-driven MARS).

    Combining the factors of reliability & accuracy, cost, warranty, and included accessories, the LMT was the winning bid. In 2019 a contract was signed for the purchase of about 20,000 5.56mm rifles and about 1,000 7.62mm DMR rifles. These were designed the R20 "Rahe" ("Hail"), and the standard configuration had a 14.3" barrel (a 12.5" barreled carbine was also included in small numbers). The standard setup is a red dot sight (initially Vortex; but later and more typically Holosun 515), LMT flip-up iron sights, and Blue Force Gear V-Tac sling. Option accessories that the Estonian MoD procured include LMT 40mm underbarrel M203 type grenade launchers, Holosun 3x magnifiers, Holosun IR light/laser units, and GSL 7.62mm multi-caliber suppressors. The rifles have monolithic upper receivers and detachable barrels (though barrel swapping is considered an armorer task and not a soldier's task).

    The R20 deliveries were completed by the end of 2023, and this now represents the standard weapon for the Estonian Defense Forces. With it, they have a truly modern and capable infantry rifle capable of handling all modern missions and accessories.

    Thanks to the Supply Battalion of the Estonian Defense Forces Support Command for giving me access to film the new R20 rifles as well as some of their older firearms!

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