Information

M40 155mm Gun Motor Carriage

M40 155mm Gun Motor Carriage


We are searching data for your request:

Forums and discussions:
Manuals and reference books:
Data from registers:
Wait the end of the search in all databases.
Upon completion, a link will appear to access the found materials.

M40 155mm Gun Motor Carriage

The M40 155mm Gun Motor Carriage was a self propelled gun based on a modified M4A3 Sherman chassis. It arrived too late to see significant service during the Second World War, but as used in large numbers during the Korean War.

The M12 155m Gun Motor Carriage had been designed in 1941 and tested in 1942. After some debate within the US Army a total of 100 were ordered in two batches, with the final deliveries in March 1943. Army Ground Forces, the section of the US Army responsible for the home-based development of the army, was never keen on the M12, and after being built most of them went to training units or into storage.

Late in 1943 the Artillery decided that it wanted the M12 for the upcoming invasion of Europe and in December work began on modernizing the M12. The Artillery also requested additional M12s, but supplies of the French M1917 and M1918 155mm guns used in the M12 had now run out. The American M1 155mm gun was heavier and more powerful, and so on January 1944 work began on a stronger vehicle that could cope with the newer gun.

The new vehicle, with the designation T83, was largely based on the M4A3 Sherman medium tank. It used the horizontal volute spring suspension introduced on later Shermans, and had a wider hull than the gun tank. The T83 used 23in wide tracks. As on the M12 the engine was moved forward to make space for the gun compartment. The drivers stayed in their normal position in the front of the vehicle. A new open fighting compartment was designed, with a folding rear wall that could be lowered to serve as a fighting platform.

Production of five pilot T83s was authorized on 18 March 1944. The first pilot was completed on 28 July 1944 and went to the Aberdeen Proving Grounds for tests. The tests with the 155mm gun were successful. The 155mm gun was then replaced with an 8in howitzer, which also performed well. The fourth and fifth pilots were completed as the T89 8in Howitzer Motor Carriage, and became the prototypes for the M43 8in Howitzer Motor Carriage.

The second and third T83 were completed in October and were used for tests at the Field Artillery Board, Fort Bragg. A number of changes were made after these trials, and production began in February 1945. A total of 418 T83s were delivered during 1945, and in May it was standardized as the M40 155mm Gun Motor Carriage. Twenty four were later converted into M43s.

The M12 had been designed to be used alongside the M30 Cargo Carrier, which was an M12 with the gun removed. The M40 was also produced as a cargo carrier, the T30, also produced by removing the gun. Very few T30s were built.

The M40 made its combat debut early in 1945. One of the T83 pilots was taken to France as part of the Zebra mission, along with one T89 and a number of Pershings. The T83 and T89 went to the 991st Field artillery Battalion, which promptly replaced the 8in howitzer with a 155mm gun. The two 155m armed vehicles then took part in the battle for Cologne. The T89 later had its howitzer restored and was tested in that configuration.

One lesson of this first test was that the open fighting compartment left the gun crews very exposed to enemy fire. General Barnes, commander of the Zebra mission, suggested that some effort should be put into produced some sort of armour to protect the crews, and also that secondary machine gun armament be installed. An armoured cab was designed, but it wasn’t considered suitable.

A handful of M40s reached the front where they replaced worn-out M12s, but their main combat use came during the Korean War, where both the M40 and M43 proved to be invaluable during the long stalemate on the 38th Parallel. After the Korean War the M40 was withdrawn from front line service in the US Army. A handful of M40s were used by the British after the Second World War.

Stats
Production: 418
Hull Length: 20ft 7in (29ft 9in including gun)
Hull Width: 10ft 4in
Height: 8ft 9 1/2in
Crew: 8 (commander, driver, six gun crew)
Weight: 80,020lb
Engine: Continental R-975 radial engine
Max Speed: 25mph road, 20mph cross-country
Max Range: 107 miles road radius
Armament: One 155mm M2 gun


Description

Equipped with a 155 mm M2 gun, it was designed to replace the earlier M12 Gun Motor Carriage. Its prototype designation was the T38, but this was changed to the M40 in March 1945.

A single pilot vehicle was used in the European Theatre in 1945 by the 991st Field Artillery Battalion, along with a related 8 inch Howitzer Motor Carriage T89, (later re-designated the M43 Howitzer Motor Carriage) which was sometimes also equipped with a 155 mm barrel. Ώ] A total of 311 out of a planned 600 were completed by the Pressed Steel Car Company before the end of the war, 24 of which were later converted into M43s. From there it was deployed during the Korean War.

After World War II, the M40 was used by the British Army, who designated it 155 mm SP, M40 and called it Cardinal in the tradition of using ecclesiastical names for SP artillery, such as Deacon, Priest, Bishop and Sexton.


Description [ edit ]

Equipped with a 155 mm M2 gun, it was designed to replace the earlier M12 Gun Motor Carriage. Its prototype designation was the T38, but this was changed to the M40 in March 1945.

A single pilot vehicle was used in the European Theatre in 1945 by the 991st Field Artillery Battalion, along with a related 8 inch Howitzer Motor Carriage T89, (later re-designated the M43 Howitzer Motor Carriage) which was sometimes also equipped with a 155 mm barrel. Ώ] A total of 311 out of a planned 600 were completed by the Pressed Steel Car Company before the end of the war, 24 of which were later converted into M43s. From there it was deployed during the Korean War.

After World War II, the M40 was used by the British Army, who designated it 155 mm SP, M40 and called it Cardinal in the tradition of using ecclesiastical names for SP artillery, such as Deacon, Priest, Bishop and Sexton.


M40 Gun Motor Carriage (Self Propelled Gun)

American WW2 and Korean war tracked self-propelled gun, crew of 2 plus gun crew of 6, powered by Continental 9-cylinder radial air-cooled petrol engine, armed with 155mm gun. Used by US forces in very small numbers in 1945 during the advance into Germany. It was used in much larger numbers during the Korean War, where it also equipped two British artillery regiments.

This vehicle reminded me when I built the Matchbox version of the SPG.

I was quite impressed with the model I made. The base provided in the kit was a little disappointing, as it was quite small, just a bit of ploughed field. Of course the size of the diorama scene base in these kits was very dependent on the size of the model. Smaller tanks and armoured cars had bigger and more scenic bases. Bigger vehicles like the M40 GMC came with small bases. I was always disappointed that the Airfix kits of the time didn’t come with bases.


M40 155mm Gun Motor Carriage - History

M40 Big Shot 155 mm Gun Motor Carriage

Désirant remplacer l' obusier automoteur M12 basé sur le châssis du Medium Tank M3 et armé du vétéran obusier de 155 mm M1918, l' US Army décida de développer un nouvel engin du même type sur base du châssis du Medium Tank M4 équipé non plus de la suspension verticale standard mais de la nouvelle suspension horizontale (HVSS) et du plus puissant canon de 155 mm M1 ou M2. Le prototype fut désigné T83 et en mars 1944, 5 modèles pilotes furent commandés. Après des tests satisfaisants, le T83 fut accepté pour la production début 1945 et fut standardisé en mai 1945 sous la désignation de M40 155 mm Howitzer Motor Carriage.

Wishing to replace the motorized howitzer M12 based on the chassis of Medium Tank M3 and armed with the veteran howitzer of 155 mm M1918, US Army decided to develop a new machine of the same type, on the basis of chassis of Medium Tank M4 equipped either with the standard vertical suspension but with the new horizontal suspension (HVSS) and with the most powerful gun of 155 mm M1 or m2. The prototype was indicated T83 and in March 1944, 5 pilot models were ordered. After satisfactory tests, T83 was accepted for the production at the beginning of 1945 and was standardized in May 1945 under the designation of M40 155 mm Howitzer Motor Carriage.

Le M40 est basé sur le châssis du M4A3 à suspension horizontale HVSS. La caisse fut allongée pour fournir un compartiment de combat suffisant pour accueillir l' obusier de 155 mm. Le char était divisé en trois parties, la cabine de pilotage à l' avant munie de deux coupoles de vision sur le toit (ainsi qu' une trappe de secours sur le plancher), le compartiment moteur au centre et le compartiment de combat à l' arrière qui occupe la moitié de la longueur du char. L'équipage du M40 avait un équipage de 8 hommes dont le pilote et le copilote qui prenaient place dans la cabine de pilotage. Le reste était divisé entre le poste de combat et un transport de munitions. L' armement du M40 consistait en un obusier de 155 mm M1A1 ou M2 sur affût M13 installé sans le compartiment arrière. Cette arme avait une portée maximale de 23 km. Le M40 embarquait 20 projectiles de 155 mm. Le M40 était dotée d' une large porte à rabattement arrière avec une rampe de chargement/accès pour que les 6 servants du canon puissent opérer à l' aise, et faciliter le chargement des munitions. Comme le M12, cet obusier automoteur était doté d' une large bêche à l' arrière qui enfoncée dans le sol empêchait le char de reculer en raison du recul de l' arme lors que celle-ci était utilisée.

M40 is based on the chassis of the M4A3 with horizontal suspension HVSS. The hull was lengthened to provide a sufficient compartment of combat to accomodate the howitzer of 155 mm. The tank was divided into three parts, the cockpit in front provided with two cupolas of vision on the roof (as well as a trap door of escape on the floor), the engine compartment in the center and the compartment of combat to the back which occupies half of the length of the tank. The M40 had a crew of 8 men which the driver and the copilot who took seat in the cockpit. The remainder was divided between the station of combat and an ammunition carrier. The armament of M40 consisted of an howitzer of 155 mm M1A1 or M2 on M13 mount installed to the back compartment. This weapon had a maximum range of 23 km. M40 embarked 20 projectiles of 155 mm. M40 was equipped with a broad door with back folding back with a slope of loading/access where the 6 gun crewmen can operate at ease, and which facilitated the loading of the ammunition. Like M12, this motorized howitzer was equipped with a broad spade to the back which inserted in the ground prevented the tank from moving back because of the recoil of the weapon at the time this one was used.

Le moteur installé au milieu était un Continental R975 C4 essence de 9 cylindres développant entre 400 et 460 CV à 2400 tours/minute. Le M40 pouvait atteindre sur route les 39 km/h et avec les 976 l embarqués parcourir environ 160 km sur son propre carburant. La suspension de type HVSS, c' est-à-dire à ressorts horizontaux comportait 3 paires de chariots munis chacun de deux double-galets de roulement, une paire de poulies de tension arrière, une paire de barbotins avant et cinq paires de rouleaux porteurs. Les chenilles montées avec la suspension HVSS était plus large que celles montées sur la suspension VVSS (Verticale) et atteignait les 580 mm de large. Cette disposition assurait au char une meilleure stabilité et une pression au sol acceptable. La suspension horizontale devait aussi être moins éprouvée par le recul du canon que la suspension verticale.

Types de chenilles montées sur le M40:

T66 type: guide central, simple goupille, moulée, acier
Largeur: 580 mm - Pas (espacement): 150 mm - Patins: 2x86 - Contact au sol: 4.17 m
T80 type: guide central, double goupille, caoutchouc et acier
Largeur: 580 mm - Pas (espacement): 150 mm - Patins: 2x86 - Contact au sol: 4.17 m
T84 type: guide central, double goupille, caoutchouc
Largeur: 580 mm - Pas (espacement): 150 mm - Patins: 2x86 - Contact au sol: 4.17 m

The engine installed in the middle was Continental R975 C4 gasoline of 9 cylinders developing between 400 and 460 hp to 2400 rpm. M40 could reach on road the 39 km/h and with the 976 L embarked to run approximately 160 km on its own fuel. The suspension of the type HVSS (Horizontal Volute Springs Suspension) comprised 3 pairs of bogies provided each one with two double-road wheels, a pair of back idlers, a pair of front sprocket-wheels and five pairs of return rollers. The tracks assembled with suspension HVSS was broader than those assembled on suspension VVSS (Vertical) and reached the 580 mm broad. This provision ensured the tank a better stability and a pressure on the ground acceptable . The horizontal suspension resisted better to the recoil of the gun as the vertical suspension.

Types of tracks assembled on M40:

T66 type: central guide, single pin, steel, rubber
Width: 580 mm - Pitch: 150 mm - Links: 2x79 - Track ground contact: 3.84 m
T80 type: central guide, double pin, steel, rubber
Width: 580 mm - Pitch: 150 mm - Links: 2x79 - Track ground contact: 3.84 m
T84 type: central guide, double pin, rubber
Width: 580 mm - Pitch: 150 mm - Links: 2x79 - Track ground contact: 3.84 m

M40 155mm GMC
(Patton Museum)

M40 155mm GMC
(Patton Museum)

Le blindage du M40, était très léger et ne dépassait pas les 25 mm. Seuls les deux pilotes étaient entièrement protégés dans la cabine de pilotage alors que les servants étaient très exposés dans le compartiment de combat ouvert au dessus et à l' arrière . Étant donné que le M40 opérait pratiquement comme une pièce d' artillerie classique, c' est-à-dire depuis les lignes arrière, à longue distance, ce défaut (voulu pour ménager la suspension et la mobilité du char) n' avait que peu d' importance.

Un total de 418 M40s furent fabriqués en 1945 par Pressed Steel Car Co. dont 24 furent plus tard convertis en M43. Les M40 remplacèrent peu à peu les M12s et leurs vieux canons de 155 mm datant de la 1re guerre mondiale. Quelques-uns furent utilisés en Europe de l' Ouest, durant la bataille d' Allemagne, notamment lors de la prise de Cologne.

The shielding of M40, was very light and did not exceed the 25 mm. Only the two drivers were entirely protected in the cockpit whereas other crewmen were very exposed in the open (top and back) combat compartment. Since M40 practically operated like a traditional piece of artillery, i.e. since the rear lines, at long distance, this defect (desired to spare the suspension and the mobility of the tank) had only little importance.

A total of 418 M40s were manufactured in 1945 by Pressed Steel Car Co which 24 were converted later into M43. M40 replaced little by little M12s and their old guns of 155 mm dating from the 1st world war. Some were used in Western Europe, during the battle of Germany, in particular at the time of the catch of Cologne.


Create Wishlist

Constructed from a widened and lengthened M4A3 chassis, the M40 Gun Motor Carriage was the mobilized variant of the 155mm M1 "Long Tom" rifle. Capable of firing a 95lb explosive shell out to 25,175 yards, the M40 was standardized in November of 1945 (missing out on action in World War II) and provided support for ground forces during the Korean War.

Specifications:

Crew: 8
Armament: 155mm main gun
Speed: 24 mph (38 kph)
Range: 106 mi (170 km)

Additional information about this Brickmania® custom building kit:

The M40 kit features an elevating and depressing gun, simulated suspension, a detailed breach, and posable stabilizer. Also included is a custom minifig, sticker sheet, crew sticker sheet, and BrickArms® M1 Steel Pot helmet.

Model Statistics:

Designed by Cody Osell
775 LEGO® & BrickArms® elements
1x custom printed minifig designed by Landon Reimer
1x BrickArms® M1 Steel Pot helmet
High-quality sticker sheet
Full-color printed building instructions
1/35th scale to match other Brickmania kits
Intermediate Skill Level (4-6 years building experience recommended)

All Brickmania® model kits are made of new-condition LEGO® bricks. This model comes disassembled, includes complete printed building instructions and comes packaged in a sealed box. This is a limited-edition kit and production may be discontinued at any time.

This is not a LEGO® Product. LEGO and the LEGO minifigure are trademarks of the LEGO Group, which does not sponsor, authorize or endorse this product. The LEGO Group is not liable for any loss, injury or damage arising from the use or misuse of this product


Specifications of the M-40 155mm Gun Motor Carriage

Crew8
Weight41 tons
Height9 feet 4 in.
Width10 feet 4 in.
Length21 feet 10 in.
EngineContinental R-975-C4 (9 cyl radial)
Horsepower395 bhp
Road Speed24 mph
Range100 miles


A pair of M-40 155mm Gun Motor Carriages of Battery B, 937th Field Artillery Battalion, providing fire support to U.S. Army 25th Infantry Division , Munema, Korea, 26 November 1951.


M-40 155mm Gun Motor Carriage.


M40 GUN MOTOR CARRIAGE and M43 Howitzer Motor Carriage in WWII and Korea

L&rsquoorigine, lo sviluppo, le prove e l&rsquoimpiego dell&rsquoM40 Motor Carriage e dell&rsquoM43 Howitzer Motor Carriage esaminati attraverso una ricca iconografia e agile testo ricco di dettagli.

The M40 Gun Motor Carriage and M43 Howitzer Motor Carriage are featured in over 200 photographs, providing a detailed study of the conception, development, testing, and combat use of these key vehicles. As the US entered WWII, the nation lacked heavy self-propelled artillery, instead relying heavily on towed artillery, much of it WWI-surplus. Only 100 examples of the nation&rsquos first heavy self-propelled gun, the M12, were built. Finding favor once deployed, attention was turned to developing an improved model. Initially designated the T83, and later as the M40, the new 155mm Gun Motor Carriage was first fielded in the closing months of WWII. Already scheduled for mass production, the M40, and its companion 8-inch howitzer-armed M43, continued to see extensive use during the Korean War, providing crucial support to infantry and armor formations. Historic period images, as well as, meticulously photographed surviving examples, provide a detailed look at this important piece of US military hardware. Part of the Legends of Warfare series.


Ordnance maintenance : 155-mm gun motor carriage M40 and 8 in. howitzer motor carriage M43 hull and suspension.

Contains a description of procedures for "inspection and repair, and necessary disassembly and assembly of hull and track suspension group." This information pertains only to 155-mm gun motor carriage and the 8-inch howitzer motor carriage.

Physical Description

iii, 82 p. : ill., diagrs. 22 cm.

Creation Information

Context

This book is part of the collection entitled: Government Documents A to Z Digitization Project and was provided by the UNT Libraries Government Documents Department to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 2548 times, with 11 in the last month. More information about this book can be viewed below.

People and organizations associated with either the creation of this book or its content.

Authors

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

Descriptive information to help identify this book. Follow the links below to find similar items on the Digital Library.

Titles

  • Main Title: Ordnance maintenance : 155-mm gun motor carriage M40 and 8 in. howitzer motor carriage M43 hull and suspension.
  • Added Title: War Department technical manual TM 9-1747.
  • Alternate Title: 155-mm gun motor carriage M40 and 8 in. howitzer motor carriage M43 hull and suspension
  • Series Title:War Department technical manual

Description

Contains a description of procedures for "inspection and repair, and necessary disassembly and assembly of hull and track suspension group."
This information pertains only to 155-mm gun motor carriage and the 8-inch howitzer motor carriage.

Physical Description

iii, 82 p. : ill., diagrs. 22 cm.

Notes

Includes bibliographical references (p. 79-80) and index.

Supersedes portions of the following which pertain to materiel described in this manual: TB 9-1750K-2 (27 July 1944), TB ORD 41 (12 Feb. 1944), and TB ORD 150 (15 June 1943).

Listed in 1948 Monthly catalog, p. 273.

Subjects

Keywords

  • 155-mm guns
  • 8-in howitzers
  • armored vehicles
  • armoured fighting vehicles
  • assault guns
  • combat vehicles
  • direct fire
  • field artillery
  • gunnery
  • indirect fire
  • mobile artillery
  • motor carriages
  • self-propelled artillery
  • tank destroyers

Library of Congress Subject Headings

Language

Item Type

Identifier

Unique identifying numbers for this book in the Digital Library or other systems.


Technical Details

155 mm Gun Motor Carriage, M40
Crew
Crew 8
Physical Characteristics
Weight 36.3 t
Length 9.07 m
Width 3.15 m
Height 2.68 m
Performance
Speed (max) 38.6 km/h
Engine
Engine Continental R-975
Net h.p. 353
Armament
Primary weapon 155 mm M2 (1)


Watch the video: AIFV KENTAURUS - ΤΟΜΑ ΚΕΝΤΑΥΡΟΣ - HELLENIC VEHICLE INDUSTRY - (May 2022).


Comments:

  1. Quenton

    There is nothing cool here



Write a message