Driver diameter 40mm bofors

If they are roughly accurate, the 40mm bofors was a pretty effective aa defense. In this online version of the manual we have attempted to keep the flavor of the original layout while taking advantage of the webs universal accessibility. The morris c9b selfpropelled bofors was developed as a private. Bofors 40mm antiaircraft gun written by david boyd thursday, 01 january 2009 14.

The low weight and compact bofors 40 mk4 gun system with its high rate of fire and ability to switch between optimized ammunition types including the intelligent 40mm 3p alltarget ammunition provides high survivability and tactical freedom at all levels of conflict. The m1 antiaircraft gun is the single barrel 40mm bofors which was in service in the united states army during the second wolrd war. The shell itself was 40mm in diameter, 180mm long and weighed nearly 1 kilo. Apr 05, 2016 however the total combat load of vehicles fitted with the ctas gun is really poor, which means despite being optimized for being small, the stowed kills of a warrior or scoutsv with ctas are still limited compared to other ifvs with smaller guns and missile launchers. In the 1960s, otobreda started building the model 1948 under license from bofors, but since that time they have developed many of their own versions. Original wwii era 1943 dated drill round for 40mm bofors aa gun. Mar 07, 2019 such was the success of the 40mm bofors design that it still remains in service today 2014, having seen additional combat service through the many engagements of the cold war years. Gmc cckw 353 with bofors 40mm aa gun hobbyboss case. The bofors 40mm kit also has a complete instruction set, which can be downloaded and saved at. It has the capability to rapidly switch between optimised ammunition types, including. Both cases are fitted with american primers, manufactured i believe by. As the study clearly verified feasibility bofors and agsc decided to proceed. Morriscommercial c9b selfpropelled 40mm bofors tanks.

Did not last very long and was retired long before the 40mm. Less well known than the 40 mm quickfiring aa gun, the gun was nevertheless adopted by armed forces of numerous countries during world war ii, including argentina, china, dutch east indies, finland, greece, hungary, persia and thailand. Bofors 40 mk4 naval gun system bae systems 40mm datasheet. The 6pd was designed to replace it but after the fall of france the army lost a huge proportion of its at guns and we simply couldnt afford. The boffin mounting was a twin 20 mm oerlikon mark v or mark vc mounting modified to take a single bofors 40 mm gun. The 40mm m2a1 gun currently used on the ac gunship has swedish roots dating back to the 1930s. I will be using a blue jacket early elco pt kit as a basis.

Some canadian manufactured cases such as 75 mm m18 and 76 mm m26 were sent south to the usa for filling. Armor penetration of swedish tank and antitank weapons on. So youd assume the 50x is better, since it uses bigger drivers, right. It has the capability to rapidly switch between optimised ammunition types, including programmable 40mm 3p alltarget ammo. Shop cdvs for ammunition, dummy rounds, projectiles, powder, cases, primers and more. Ammunition 30mm x 220 for antiaircraft gun 302 m53, 5359cs ammunition 37mm x 252 for antiaircraft gun 37mm m39su ammunition 40mm x 311 for antiaircraft gun 40mm l60. The enemy had superiority in numbers, his tanks were more heavily armoured, they had larger calibre guns with nearly twice the effective range of ours, and their telescopes were superior. Bofors 40mm mk4 naval gunanimation 3d model available on turbo squid, the worlds leading provider of digital 3d models for visualization, films, television, and games. The design of these mechanisms and barrels is essentially that of the swedish bofors 40mm antiaircraft gun. The bofors defence 40 mm l70 automatic antiaircraft gun entered service with the swedish army in 1951 as the. The destructive power of this shell was superior to a hand grenade. Ammunition 40mm x 365 for antiaircraft gun 40mm l70 bofors ammunition 57mm x 348 for selfpropelled antiaircraft gun 57mm s68 and s60. To support the rear of the barrel assy when removing it from the gun. Due to the high rate of fire, the barrel would tend to overheat.

Towed variants edit bofors gun in at position on a mound overlooking the beach in algeria, 1943. Nov 07, 2011 bofors 40mm l60 the bofors 40mm gun was first developed in the early 1930s, in response to a 1928 request by the swedish navy for a shipmounted antiaircraft weapon. Learn more before you buy, or discover other cool products in ships. M1 40mm bofors technical data sheet specifications. The muzzle velocity is from 2,700 to 2,870 feet per second. The bofors 40 mm gun is a famous antiaircraft autocannon designed by the swedish firm of bofors. Both 40 mm cartridges use the highlow propulsion system. L60 40mm gun the 40mm bofors light antiaircraft gun, based on a swedish design and built in canada, served in a number of different theatres during the second world war. Originally invented by bofors ordnance, karlskoga, sweden as the model 1934, you could say the gun was. In short, i could not resist the call of the truck and i began to build, just as see my bench vacated and clean. Seriously, theres so much more to compare two different headphone drivers than their diameter.

The bofors was the best medium antiaircraft gun of the war. The bofors l60 mark 2 has a barrel diameter of 40 mm and has a barrel length of 2. For me if it has at least 40 mm size im confident and dont see it as an advantage if it its 50 mm or whatever as theres many impressive 40 mm drivers out there. The initial design was the result of a collaboration between the german firm krupp and the swedish company ab bofors during the years immediately following wwi. We offer this manual on the web site because it covers the single 40mm gun used on many small ships.

The bofors 40 mm gun, often referred to simply as the bofors gun, is an antiaircraft autocannon designed in the 1930s by the swedish arms manufacturer ab bofors. The exact location is not known, but judging by the uniforms it is a hot climate, suggesting the far east. A swedish design dating from 1929, it was manufactured and used by all the allied powers, beginning with the poles in the mid1930s, who also manufactured a number for the british. It operates the trapeze seen above the sights, moving the sights to adjust for lead. With you, the cckw 353 of 2 and 12 tons, with a 40mm bofors antiaircraft gun in the back. Illustration of the morriscommercial c9b selfpropelled 40mm bofors, produced by ardhya anargha, funded by our patreon campaign. The bofors 40 mm gun is an antiaircraft autocannon designed in the 1930s. This example includes the britishdesigned stiffkey sight, being operated by the gun layer standing to the right of the loader turned sideways. All results related to bofors 40mm found on 80 scale modeling websites and the scalemates kit database. The maximum effective range, limited by the director, is 3,000 yards. The development of bofors first automatic weapons began in 1925 when the navy requested the development of a 20 mm antiaircraft gun. At least already 40mm drivers are more than capable, its more down to how its tuned and construction of the cup than driver size.

Developed by the swedish firm bofors defence, it fired a 2pound, 40mm 1. We offer this manual on the web site because it covers the single 40mm mount m3 used on many small ships. By robert bruce the 40mm m2 dual automatic gun is a truly awesome weapon when its twin machine cannons are pumping out 2pound highexplosive tracer projectiles at the rate of four rounds each second to a maximum range in excess of 10,000 yards. The dual version of the gun was mounted on an m24 chaffee tank chassis and was called the m19 gun motor carriage. The l70 is an antiaircraft gun 40mm caliber designed and manufactured by the swedish company bofors. British troops operating the 40mm bofors on the morris.

Apr 10, 2016 ive teased some photos below of a large scale bofors 40mm cannon ive been working on. Driver diameter headphone sound quality depends to a great extent on the size of the diaphragm, which is indicated by the driver diameter. It was one of the most popular mediumweight antiaircraft systems during world war ii, used by most of the western allies as well some captured systems being used by the axis powers. A derivative design is mounted on the ac gunship, with a shortened barrel and a bellshaped blast deflector. Bofors 40mm l60 the bofors 40mm gun was first developed in the early 1930s, in response to a 1928 request by the swedish navy for a shipmounted antiaircraft weapon. What is earphones driver and how does it affect audio. An earphones driver is usually in the range of 8mm 15mm in diameter while a headphones driver ranges from 20mm 50mm in diameter. The largest driver in a very popular headphone i can think of is the hd800 which uses 56mm ring radiator drivers, i dont know how the heaphone circumvents the issues of large drivers but i am sure someone else can explain it in detail. Quality 40mm driver unit with free worldwide shipping on aliexpress. Sep 25, 2015 armor penetration of swedish tank and antitank weapons on september 25, 2015 0 comments blogging after literally years of searching for an official swedish penetration table of all antitank weapons in one place, a casual mention in the gunnery field manual finally set me on the right track.

Now, having looked at numerous 40 mm headstamps it would appear that the final acceptance pheon was not always added. Spring suspension is arranged according to the bofors parallelogram system. Its low weight and compact dimensions combine with a long range and a high rate of fire. The 40 mm bofors gun was chosen for a number of reasons. The company was acquired in september 2000 by united defense industries, but since march 2005 has been a part of bae systems ab. Shop combat disabled veterans surplus for 40mm bofors projectile with ap penetrator cdvs. Bofors 40 mm antiaircrft gun located at estrella warbird museum, paso robles, ca. I think its worth remembering that the 2pd was probably the best of the 3740mm at guns usd by all sides at the start of the war. A few years ago, we put together a list of some our favorite watches coming in at 40mm and under.

The 40mm bofors l60 autocannon was a highly versatile antiaircraft and multipurpose autocannon used mainly by the allies in world war ii. Bofors offers an updating service to enable these venerable weapons to benefit from the latest technology in ammunition and fire control systems. My knowledge of 40mm l60 is scant but as far as i can ascertain we didnt accept beyond mk iv and a push fit primer was never approved. The morriscommercial c9b selfpropelled bofors gun manx.

After the war bofors sought to build on the success of the 40mm and developed a new and more powerful version, the l70, which first emerged in 1947 and entered service in 1951. Chrysler had to translate to english, fix absolute dimensions, and switch to. The 40mm bofers antiaircraft gun was adopted by the us army after six british built guns were trialled in. Gilding metal for driving bands was substituted for copper as a costsavings.

The 40mm automatic gun m1 aa fires fixed ammunition of armorpiercing and highexplosive types. At the time, the industry was trending toward larger watches, but we found that our audience often shared our preference for smaller timepieces. The disruptive effect of firing 120 40mm rounds per minute on the level of. The bofors 40 mk4 naval gun system was designed to be an agile, flexible weapon systems that enable a lightningquick response. These used an oil hydraulic system and were fitted with a gyro gunsight. The firm developed automatic guns in caliber ranging from 20mm to 57mm, but the 40mm because a tremendous commercial success. A driving force it required team work, but one person stood out as a driving. This arrangement fought in europe at the end of wwii, in the hands of the free french. Bofors showed little interest in this project as the size of any order from the swedish. Bofors 40 mm antiaircrft autocannon estrella warbirds museum.

Note that the m1 gun is the same as found in the double and quad mount manuals also on this site. Many people have been made to believe that the bigger the size, the better the sound quality. Developed from the bofors 40 mm60 model 1936, the 40 mm70 model 1948 was originally designed to replace the older weapons twin mountings with single mounts by having double the rate of fire rof of the older weapon. This category has the following 9 subcategories, out of 9 total. Ordnance collectors source, military collectibles online. I have asked sennheiser quite a few times now but they keep telling me 16mb or we dont have drivers that is only for our 3d surround models not even joking lol. Good catch the hd800 does indeed have a diaphragm with a very large diameter. Origins of the storied 40mm bofors line were seen in an early 1922 initiative by the swedish navy to replace its british vickers 2pounder antiaircraft guns. The germans referred to the bofors 40mm as pakflak ataa gun, which gives an indication on how they saw it from the receiving end. So youd assume the 50x is better, since it uses bigger drivers.

Looking for a 148 scale 40mm bofors gun kit hyperscale. I am looking for the bofors gun to complete the armament fit. This gun mounts the original reflector sights, and lacks the armor found on british examples. Folks, 40 mm antiaircraft gun,tm 91252, 1951, is an army service manual for this widely used antiaircraft gun of ww ii. These are in general good weapons, having high rates of fire and some with dualfeed he and ap capabilities. In spite of the successful development, the swedish navy changed its mind and decided it needed a smaller handtraversed weapon of mm25 mm size, and. The total number of aa kills by the bofors in wwii would need to include kills by bofors deployed by forces other than the us navy and merchant marine, but i have been unable to find any sources for those. The bofors gun that revolutionised air defences saabs history. The design likely had its origins with the german krupp works, but when german arms manufacturing was suppressed following the first world war, otto krupp. The m19 gun motor carrage was based on the m24 chaffee light tank built by cadillac and masseyharris. For full size image, size, image description, contributed. In fact, the diameter of the driver is possibly the least important spec. Unfortunately, no date is given for the changeover, but a table dated june 1944 shows m38a1 only being used for the 40mm, shot, fixed, a.

The 40mm sight, mark 3, is used on the 40mm twin mount. I was just wondering what size the drivers in the sennheiser g4me zeros are i. Ive teased some photos below of a large scale bofors 40mm cannon ive been working on. The 40mm offers more sound per mm at the same volume compared to the 50mm, but will have less theoretical soundstage because it ultimately covers less area around your ear. A selection of magnets measuring 40mm in diameter for discsphere magnets or 40mm widelong for rectangular magnets. Bofors 40 mm antiaircrft autocannon the bofors 40 mm gun is an antiaircraft autocannon designed in the 1930s by the swedish defense firm of ab bofors. The 40 mm70 was designed to replace the bofors 40 mm60 model 1936 twin mountings with single mounts by doubling the rate of fire rof. This round has a plain wooden projectile which at first inspection is homemade but it has a perfectly aligned date of 540 stamped together with a broad arrow and a p. In this section you will find highperformance neodymium magnets, great value ferrite magnets, high temperature resistant samarium cobalt magnets, flexible adhesive magnets and traditional alnico bar magnets.

These are very high quality 40mm quad bofors mk2 in 1200 that can be used on the 1200 uss missouri from trumpeter models and will be a great addition to any future kit in 1200 scaleship accessories that would use these types of guns. In 1928 the navy requested a new 40 mm aa gun and a 25. It was one of the most popular mediumweight antiaircraft systems during world war ii, used by most of the western allies as well as by the axis powers. It has a magazine size of 4 rounds per gun and has a. The bofors 40mm kit also has a complete instruction set, which can be downloaded and saved at any time. The bofors gun was capable of firing at a rate of 120 rounds per minute. Generally, a driver s size determines the loudness of the earphone. Ammunition 40mm x 365 for antiaircraft gun 40mm l70 bofors. What do all of these headphone specs mean and why are they. Beside excellent performance in gaming, it also provides precision positioning and strong bass for listening all types of music or vivid video watching. The 50 uses 45mm drivers, and the 40 uses 40mm drivers. Bofors 75 mm and bofors 80 mm were two closely related designs of antiaircraft and generalpurpose artillery.

There are two main types in service with nato countries. L70 l70 l70 bofors 40mm automatic antiaircraft gun data. Armor penetration of swedish tank and antitank weapons. For 40mm automatic gun m1 and 40mm dual automatic gun m2. It was a light antiaircraft tank, mounting 2 40mm bofors guns in an open topped turret. The 40mm bofors was arguably the most successful weapon of its type.