T64 155mm Howitzer Motor Carriage

T64 155mm Howitzer Motor Carriage

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T64 155mm Howitzer Motor Carriage

The T64 155mm Howitzer Motor Carriage was a self propelled gun that mounted a howitzer on a lengthened M5A1 Light Tank chassis. The T64 never entered production, but a modified version based on the M24 Chaffee chassis did enter production as the M41 Howitzer Motor Carriage.

In May 1941 the US Army began work on the T16 4.5in Gun Motor Carriage, which was originally to use a chassis with components from the M3 Light Tank and the T7 Light Tank project. Most of the design work was done by Cadillac, who were also working on the M5 Light Tank. Their solution to the problem of fitting a big gun in the small chassis of the M3/M5 Light Tank was to produce a lengthened chassis based on the M5, with a third two-wheel bogie on each side. This modified chassis was then used on a variety of projects, including the T64.

Two prototypes of the T16 were ordered. The first was completed with the 4.5in gun, but the second was built with a 155mm howitzer and given the designation T64 155mm Howitzer Motor Carriage. It had the same layout as the T16, with the engine in the centre of the vehicle and the gun at the rear. Work on the T64 began in December 1942 and the single prototype underwent successful trials in 1943. By this point work had begun on the T24 Light Tank, which was expected to replace the M5 and so in August 1943 the Ordnance Board began to develop the T64E1, combining the T24 chassis with the basic layout of the T64. A pilot vehicle was authorised on 20 January 1944 and the type entered production as the M41 Howitzer Motor Carriage.

M114 155 mm howitzer

The M114 155 mm howitzer is a towed howitzer developed and used by the United States Army. It was first produced in 1942 as a medium artillery piece under the designation of 155 mm Howitzer M1. It saw service with the US Army during World War II, the Korean War, and the Vietnam War, before being replaced by the M198 howitzer.

The gun was also used by the armed forces of many nations. In some countries, the M114A1 still remains in service.


A new carriage was under development for much of the 1930s for the existing World War I-era M-1918 155 mm howitzer, which was a license-built French Canon de 155 C modèle 1917 Schneider until 1939 when it was realized that it did not seem logical to put a new carriage underneath an obsolete howitzer. So development began anew with a carriage designed to be used for either the 155 mm howitzer or the 4.7-inch (120 mm) gun. This was completed by 15 May 1941 when the Howitzer M1 on the Carriage M1 was standardized. The howitzer itself differed from the older model by a lengthened barrel of 20 calibers and a new breech mechanism. Uniquely it was the sole 'slow-cone' interrupted screw mechanism to enter service after 1920. Ώ] This meant that two separate movements were necessary to open the breech, versus the single movement of the 'steep cone' mechanism that simultaneously rotated and withdrew the breech.

The M1A1 was redesignated as the M114A1 in 1962.

World War II Database

ww2dbase Development of the 155 mm Howitzer M1 weapons began in 1939, and the designation was given on 15 May 1941. They saw extensive service during WW2, and would go on to participate in combat during the Korean War and the Vietnam War with the US Army. During the Korean War, some of these weapons fought as the mounted weapon on 155-mm Howitzer Motor Carriage M41 self-propelled guns. In 1962, those in US service were redesignated M114, and were not made obsolete until the arrival of the M198 howitzers in 1979 production of the M1/M114 weapons had ceased since 1953. Of the over 10,000 examples of M1/M114 howitzers built, many were exported to US-friendly nations such as Canada, Republic of China (Taiwan), Denmark, France, Israel, Philippines, South Korea, Turkey, and many others, some of which are still in service at the time of this writing.

Last Major Revision: Oct 2013

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Visitor Submitted Comments

1. BILL says:
14 May 2009 05:24:05 PM

I'm listing the Bazooka under Artillery this weapon gives the the infantryman an edge against tanks. But do you know the story behind the name Bazooka. Bob Burns unique musical instrument made by Arkansas Comedian Bob Burns, and used this instrument in his comedy act.
When looking at the new rocket launcher, one soldier said " It looks like Bob Burns Bazooka to me" and so the name stuck with GI's.

2. BILL says:
14 May 2009 05:31:17 PM

I was able to fire the 3.5in Bazooka this model was an improved version still used by the U.S. Army in the 1960's. When you fired the weapon, you could see the round going down range. Took my turn as loader and gunner. Fort Bliss, Texas

3. BILLAnonymous says:
14 May 2009 05:57:37 PM

Launcher,Rocket M1/M1A1 2.36in Official designation. The weapon fired a 3.4 lb,M6A3 rocket,of 60mm calibre . Range 650 yards.
An improved model the M9 this weapon was able to be broken down into two halves for easy of carrying. As the war ended the all-aluminium M18 was being introduced. By the time the war ended, 476,628 bazookas of all types had been produced, along with 15,603,000 rockets of all kinds.

4. Bill says:
28 Oct 2009 08:20:12 AM

The Germans captured early models of the
bazooka, and improved on the design with
their own version,called the Panzerschreck
The weapon like its American counter-part
was crewed by two soldiers gunner and the
loader, the weapon fired the RPzBGr-4322 hollow charge round.
From 1943 to 1945 314,895 weapons, were
produced, and over 2.2 million rounds.
Panzerschreck anti-tank, rocket launcher
3.4 inch/88mm.
The other version was the 3.9 inch/100mm
model,and was built in small numbers.

5. Bill says:
6 Nov 2009 04:31:56 PM

More data on the Panzerschreck RPzB-43.
Rate of fire was about 2rds. per minute.
Effective range 150m, Weight of the launcher
was 9.25Kgs. The 88mm round weighted 3.25Kgs.
The maxium armor perforation was 200mm

6. Bill says:
11 Dec 2009 02:00:31 PM

The Panzerfaust (Armor fist) this was an
inexpensive anti-tank weapon, it was also
disposable, launch tube fired by one soldier.
The weapon had its drawbacks, it was noted,
not to stand behind the weapon because of its backblast. The warning read:
Achtung! Feuerstrah! (Beware! Fire Jet)
The Germans produced over 6,000,000 from
1943 to 1945.
The Panzerfaust 150 variant, was the basis
for the development of the Russian RPG-2 that
evolved into the RPG-7 Shoulder Fired Anti- Tank Weapon.

7. Bill says:
10 Aug 2010 09:43:28 AM

The Germans used different types of hand
grenades one of the most famous was the
"Potato masher"

This weapon known to the Germans as the M-24 Stielhandgranate or(Stick hand grenade)was
used by the German army throughout WWII.

To activate the weapon, unscrew the cap at
the bottom of the handle, and the pull cord falls out, pull on the cord and throw!

The M-24 could be thrown between 30-40 yards
To speed production, a more simpler version
was the M-43 used near the end of the war.

The Model M-39 (Eierhandgranate)or egg hand grenade was introduced in 1939, and produced
until the end of the war.

To activate the weapon, unscrew the cap on
the top and pull-cord falls out, tug sharply
and throw! because it had a 4 second fuse.

To see the M-39 used,German official has two M-39 hand grenades, under the family dinning
table,and uses them to kill his family.

Academy Award Nominee Best Foreign Language Film.
"Downfall"/ Sony Pictures 2005. The Last Days of the Third Reich, takes you into
Hitler's bunker in Berlin, April 1945.

8. Bill says:
12 Aug 2010 09:56:39 AM

Sd.Kfz Zwergpanzer was a remote-controlled
tracked vehicle used as a tank-buster, mine,
demolition and reconnasince, some were even
fitted with a camera.

Used by Special panzer and engineer units
Goliath was controlled by wire,and guided to its target by the operator.

The first models,carried 75Kgs of explosives
later versions carried as much as 100Kgs of
exposives. Improved models, were powered by larger batteries,or by gasoline engines.

9. Bill says:
12 Aug 2010 01:03:15 PM

The British Mills Bomb was pineapple shaped with a cast iron body, deeply grooved to
allow it to break into fragments.

The soldier grasps the grenade holding the lever, pulls the pin, and throws as the
grenade leaves the soldiers hand, the lever
flies off starting the fuse, and dive for
The Mills Bomb, could be fired from a rifle
using a blank cartridge to launch the
grenade, range about 200 yards or 182 meters

Grenade, Hand, Fragmentation Mk 2 or better
known to American GI's, as the "Pineapple"
This grenade has a killing radius of 5 meters
with a casualty-radius of 15 meters.

Millions were produced during WWII, and used
during later conflicts. Some were even used
during the Vietnam war. The Mk 2 has been
phased out of service, the last service to
use the Mk 2, was the US Navy.

Japanese Type 91,was a fragmentation grenade
that could also be fired from a small mortar

In the grenade role the pin is pulled and the striker is hit against the boot-heel to
start the fuse, before throwing.

The Italians also developed hand grenades with all-ways impact fuses which had a habit
of not always working when they landed, but were effective when they did.

Italian Bomba a Mado Mod. 35
For some reason, these grenades were painted
red and given the nickname "Red Devils".
This weapon had a reputation for being very
dangerous when found in a unexploded condition.
Other Italian grenades are, Breda Mod.45 and
Mod.35 Bomba a Mano Tipo S.I.P.E. grenade.

During WWII The Italians used both German and
captured allied hand grenades.

During Basic training I got the feel of throwing those "Blue" training grenades, before using the live ones.
Trained with the old Mk 2 hand grenade, the army was using the last of them up in the

Advanced to the M 26 hand grenade and the
M 79 40mm grenade launcher. And other anti-
personnel weapons.

"Watch Out Left Handed Thrower!"

Being left handed, I had to hold the grenade
upside down,with the lever away from me,pull
the pin with my right index finger, before throwing, you yell grenade!, as I throw the grenade the lever flies away, and I hit the dirt.
Right handed men, threw the grenade right-
side up. In training I remember left handed men to the left, right handed men to the right.

Russian hand grenade RG42,type 42 used by the Red army during WWII, shaped like a tin can with a grooved diamond pattern, it had
a 3-4 second fuse.

Type 1, M33 also used by the Red army and looked like the American Mk 2 and the WWII British Mills Bomb with cast iron body.

RDG33 Stick grenade looked like the German M-24. RKG3 and 3M Anti-Tank grenade and the
Years later these weapons were used by
Communist forces during the Vietnam war.

All visitor submitted comments are opinions of those making the submissions and do not reflect views of WW2DB.

M41 Gorilla

The M41 Howziter Motor Carriage is a self-propelled howitzer of US origin. In US service it was also known as the Gorilla. This self-propelled howitzer was developed to supplement the earlier M12 Gun Motor Carriage. Compared to the older M12 the M41 had improved mobility


The M41 Gorilla mates the existing 155mm M1 towed howitzer with the chassis of the M24 Chaffee light tank. The chassis was redesigned with the engine mounted in the center. A similar modification was carried out to create the M19 self-propelled anti-aircraft gun. An open roof firing compartment at the rear houses the howitzer. Shells are stowed underneath the mount. In the firing position the tailgate is lowered and serves as a crew platform.


The 155mm M1 howitzer has a similar performance as its towed counterpart. It has a maximum range of 14.6 km and a sustained rate of fire of 4 rpm. A total of 22 shells are carried on the vehicle. Additional ammunition is provided by M39 Armored Utility Vehicles. The M41 has a limited direct fire capability.


The steel armor protects the crew from small arms fire when on the move. The M41 is an open roof vehicle. In the firing position the crew is exposed behind the vehicle. Crew survivability is mainly improved compared to towed guns by the mobility that the tracked chassis provided.


The tracked chassis of the M24 Chaffee light tank provides good off road mobility for World War 2 standards. Two 110 hp V8 petrol engines provide propulsion. On roads the M41 can achieve 56 km/h. Fuel consumption is high and as a result the effective range is low.


The M41 was developed during World War 2 but never saw service during that conflict. The initial requirement was for 250 vehicles. This was reduced to 85 as World War 2 ended. The M41 was used by the US Army during the Korean war. The sole export user was France. In both nations the M41 was reportedly well liked. In French service the M41 was replaced by the Mk F3.

Carriage variants

The carriage was also used by the 4.5 inch Gun M-1. It went through a number of minor changes over time. The original Warner electric brakes were replaced by Westinghouse air brakes on the M1A1. Both the M1 and M1A1 carriages used a mid-axle firing pedestal that was extended by a ratchet mechanism. The M1A2 replaced the ratchet with a screw-jack system and also modified the traveling lock. The M1A1E1 carriage was intended for use in jungle and muddy terrain and replaced the wheels of the M1A1 with a free-wheeling tracked suspension, but the project was terminated after V-J day without having reached production. The T-9 and T-10 carriages were projects using low-grade steel alloys that were canceled when no longer needed. The T-16 was a light-weight carriage using high-grade steel that was estimated to save some 1,200 lb (540 kg) work began in July 1945 and continued after the war, although nothing seems to have come from it. [1]

A mid-1960s variant was the 155mm XM123 & M123A1 auxiliary-propelled howitzers. The XM123 was produced by American Machine and Foundry and outfitted with two 20 horsepower air-cooled engines produced by Consolidated Diesel Corporation, driver’s seat, steering wheel, and guide wheel on the left trail, allowing it to be more rapidly emplaced when detached from the prime mover, while the XM123A1 provided a single 20 horsepower motor with electric steering. The extra weight on the left trail displaced the howitzer after each round was fired requiring it to be realigned and the project was abandoned. The concept was copied from the Soviet 85mm SD-44 auxiliary-propelled antitank gun developed in 1954 and used by airborne forces.

M43 Howitzer Motor Carriage

Authored By: Staff Writer | Last Edited: 05/14/2019 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

The M43 Howitzer Motor Carriage was a World War 2 (1939-1945) development and a further evolution of the M40 Gun Motor Carriage line. The two were, therefore, closely related products from the Pressed Steel Car Company and emerged in 1945. The hull, chassis and running of the M40 was retained (itself taken from the M4 Sherman line) though the M43 mounted the massive 203mm howitzer system and early trials were carried out through the T89 Howitzer Motor Carriage pilot vehicle. After their acceptance in November of 1945 - following the end of war - the T89 emerged as the standardized M43. 576 units were part of the original U.S. Army order but the end of the war reduced total procurement to just 48 - twenty-four of these completed by war's end and a further twenty-four converted from existing M40 systems. The single pilot vehicle did, in fact, see combat service before the close of the war though its production brethren were not used in anger until the Korean War (1950-1953).

The finalized vehicle was a 41.5-ton product requiring a crew of eight with the gunnery section operating in an open-air environment (the driver was in the hull). The main gun was the M115 land howitzer standardized in 1941. It fired a 240lb shell at a muzzle velocity of 1,925 feet per second out to 10.5 miles away. It was typically arranged atop an eight-wheeled, twin-axle carriage system that included the tow arms, recoil mechanism and mounting hardware. Beyond the carriage, this was carried over to the M43 vehicle. A rear-mounted recoil support was lowered prior to firing to help counter some of the violent effects of the action.

Varianter af kanonlavetten [ redigér | redigér wikikode ]

Kanonlavetten blev også anvendt af 120 mm M1 kanonen. Den gennemgik en række mindre forandringer i tidens løb. De oprindelige Warner elektriske bremser blev erstattet med Westinghouse trykluftbremser på M1A1. Både M1 og M1A1 lavetter havde en affyringspedal, som blev forlænget med en skraldemekanisme. På M1A2 var skralden udskiftet med et donkraftsystem og transportlåsen var også modificieret. M1A1E1 lavetten var tænkt til anvendelse i jungle og mudret terræn og hjulene på M1A1 var udskiftet med ubundet bælteaffjedring, men projektet blev stoppet efter den japanske kapitulation uden at være nået til produktionsstadiet. T-9 og T-10 lavetterne var projekter som benyttede stål af lav kvalitet, som blev opgivet da der ikke længere var brug for dem. T-16 var en letvægtslavet, som anvendte stål af høj kvalitet, som kunne reducere vægten med 540 kg. Arbejdet begyndte i juli 1945 og fortsatte efter krigen, om end det ikke lader til at der kom noget ud af det. Ώ] En variant fra midten af 1960'erne var 155mm M123A1 med motor, førersæde, rat og styrehjul, altsammen placeret på den venstre lavetsvans, hvilket gjorde det muligt hurtigere at opstille den, når den var spændt fra sin traktor. Den ekstra vægt på venstre lavetsvans betød, at haubitsen flyttede sig når den blev afskudt og sigtet måtte justeres, og projektet blev opgivet. Metoden var kopieret fra den sovjetiske 85 mm SD-44 panserværnskanon med hjælpemotor, som blev udviklet i 1954 og anvendt af de luftbårne styrker.

Watch the video: World War 2 Footage - M12 self-propelled gun in action, Normandy


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