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M40/M43

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M40M43 (Stock)

AnnoM40M43.png
Totals
2700000 Price
400 Hit Points
36.61 / 37 kgWeight
Crew
  1. Commander
Armor
108/25.4/12.7Hull Armor(front/sides/rear, mm)
12.7/0/0Turret Armor(front/sides/rear, mm)
Maneuver
400 h.p.Engine Power
38.6 km/hSpeed Limit
20 deg/secTraverse Speed
Firepower
1250 Standard Shell Damage
88 mmStandard Shell Penetration
24.3 Time for Complete Loading
10 deg/secTurret Traverse Speed
Communication
380 mView Range
325 mSignal Range
M40/M43
VIII
M40/M43
2700000
The Long Tom and its successor, the M43, became the most powerful Allied artillery. The M40 fought in the battle for Cologne in 1945. Both vehicles were used during the Korean War.

The M40/M43 SPG was built on a widened and lengthened M4A3 medium tank chassis. The vehicle is designated as the M40 Gun Motor Carriage in a version that mounts the 155mm M1A1 "Long Tom" gun. The version that mounts the 8-inch (203mm) Howitzer is designated the M43 Howitzer Motor Carriage.

M40/M43

Stock

Level Gun Weight (t) Average Penetration (mm) Rate of Fire Dispersion at 100 m Aiming Time
gun VII 155 mm Gun M1A1 4352 88/90 1250/1250 2.47 0.72 6.5
Level Engine Weight (t) Engine Power (h.p.) Chance of Fire on Impact
engine IV Wright Continental R-975C1 516 400 20
Level Suspension Weight (t) Load Limit Traverse Speed (deg/s)
chassis VII M40 15000 37 20
Level Radio Weight (t) Signal Range (m)
radio IV SCR 510 0 325

M40A1

Speed

M43
Level Gun Weight (t) Average Penetration (mm) Rate of Fire Dispersion at 100 m Aiming Time
gun VII 155 mm Gun M1A1 4352 88/90 1250/1250 2.47 0.72 6.5
Level Engine Weight (t) Engine Power (h.p.) Chance of Fire on Impact
engine V Wright Continental R-975C4 550 460 20
Level Suspension Weight (t) Load Limit Traverse Speed (deg/s)
chassis VIII M43 15000 39.5 22
Level Radio Weight (t) Signal Range (m)
radio VI SCR 610 0 420

M43

Attack

Level Gun Weight (t) Average Penetration (mm) Rate of Fire Dispersion at 100 m Aiming Time
gun VIII 203 mm Howitzer M1 4645 102/241/102 1850/1450/1850 1.56 0.86 7.5
Level Engine Weight (t) Engine Power (h.p.) Chance of Fire on Impact
engine VI Ford GAA early 708 500 20
Level Suspension Weight (t) Load Limit Traverse Speed (deg/s)
chassis VIII M43 15000 39.5 22
Level Radio Weight (t) Signal Range (m)
radio X SCR 619 0 750

Compatible Equipment

Medium Spall Liner
Camouflage Net
Fill Tanks with CO2
Coated Optics
Enhanced Gun Laying Drive
Enhanced Horizontal Coil Springs 3 Class
Large-Caliber Artillery-Shell Rammer
Binocular Telescope
Toolbox
"Wet" Ammo Rack Class 2

Compatible Consumables

Automatic Fire Extinguisher
Case of Cola
100-octane Gasoline
105-octane Gasoline
Manual Fire Extinguisher
Large First Aid Kit
Large Repair Kit
Small First Aid Kit
Small Repair Kit

Player Opinion

Pros and Cons

Pros:


  • Gun range: stock: 1400 m, top: 1330 m
  • Fast and mobile
  • Nice gun arc
  • Impressive damage.


Cons:


  • Bad accuracy and slow aim time
  • Slow RoF
  • Horrid Camouflage Rating


Performance

The M40/M43 has an excellent traverse speed compared to the GW Tiger and Object 212 and its top speed is good as well. The M40/M43 has a lower damage output than both those SPGs but makes up for this with its mobility, giving it the ability to relocate quickly if it is spotted by enemy tanks.


Early Research

  • Both upgrade engines and both upgrade radios carry over from the M12 if researched there.
  • The suspension upgrade is necessary to handle the weight of the top engine and gun.
  • Stock vehicle is the M40 version with 155mm gun.
  • With the 8-inch Howitzer mounted the vehicle becomes the M43 version.
  • Size matters in selection of arty guns. Get the big one. It adds 10 seconds to reload time, but little aim time difference.


Historical Info

M40 in the US Army Ordnance Museum

The 155 mm Gun Motor Carriage M40 was a US self-propelled artillery vehicle built on a widened and lengthened Medium Tank M4A3 chassis, but with a Continental engine and HVSS (Horizontal Volute Spring Suspension) that was introduced at the end of the Second World War. Equipped with a 155 mm M2 gun, it was designed to replace the earlier M12 Gun Motor Carriage. Its prototype designation was the T83, 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, which was sometimes also equipped with a 155 mm barrel.[1] From there, it was deployed during the Korean War.

After World War II, the M40 was used by the British Army, who designated it the 155mm SP M40.


A version on the same chassis mounted an 8-inch (203 mm) howitzer and was designated the M43 Howitzer Motor Carriage. It was standardized in August 1945, 48 were built. The M43 saw action in the Korean War.

Variants

The Army planned to use the same T38 chassis for a family of SP artillery:

  • Cargo Carrier T30- a few built before cancellation in December 1944 to make more chassis' available for GMCs.
  • 8 inch Howitzer Motor Carriage M43- 8 in (203 mm) HMC, standardized August 1945, 48 were built.


Historical Gallery

Sources and External Links

USA
Light Tanks IT1 Cunningham IIM2 Light Tank IIT1E6-X IIT1E6-X1 IIT2 Light Tank IIT7 Combat Car IIIM22 Locust IIIM3 Stuart IIIMTLS-1G14 IVM5 Stuart VM24 Chaffee VIT21 VIT37 VIIM41 Walker Bulldog VIIT71 VIIIM41B Brazilian Bulldog VIIIT49
Medium Tanks IIT2 Medium Tank IIIM2 Medium Tank IVM3 Lee VM4A2E4 Sherman VM4A2E4 Ripper VM4 Sherman VM7 VRam II VIM4A3E8 Sherman VISherman Fury VIM4A3E2 Sherman Jumbo VIIT20 VIIT23E3 VIIIM26 Pershing VIIIT26E4 Super Pershing VIIIT26E4 Freedom VIIIT69 VIIIT95E2 IXM46 Patton IXT54E1 XM48A1 Patton
Heavy Tanks VT14 VT1 Heavy Tank VIM6 VIIT29 VIIIM6A2E1 VIIIT32 VIIIT34 IXM103 XT110E5 XT57 Heavy Tank
Tank Destroyers IIT18 IIIT82 IVM8A1 IVT40 VM10 Wolverine VT67 VIM18 Hellcat VIM36 Jackson VIIT25/2 VIIT25 AT VIIIT28 VIIIT28 Prototype IXT30 IXT95 XT110E3 XT110E4
Self-Propelled Artillery IIT57 IIIM7 Priest IIISexton I IVM37 VM41 VIM44 VIIM12 VIIIM40/M43 IXM53/M55 XT92
Self-Propelled Guns
USA IIT57 IIIM7 Priest IIISexton I IVM37 VM41 VIM44 VIIM12 VIIIM40/M43 IXM53/M55 XT92
UK IILoyd Gun Carriage IIISexton II IIISexton I IVBirch Gun VBishop VIFV304 VIICrusader 5.5-in. SP VIIIFV207 IXFV3805 XConqueror Gun Carriage
Germany IIG.Pz. Mk. VI (e) IIISturmpanzer I Bison IIIWespe IVPz.Sfl. IVb IVSturmpanzer II VGrille VIHummel VIIG.W. Panther VIIIG.W. Tiger (P) IXG.W. Tiger XG.W. E-100
France IIRenault FT 75 BS IIILorraine 39L AM IVAMX 105 AM mle. 47 VAMX 13 105 AM mle. 50 V105 leFH18B2 VIAMX 13 F3 AM VIILorraine 155 mle. 50 VIIILorraine 155 mle. 51 IXBat.-Châtillon 155 55 XBat.-Châtillon 155 58
USSR IISU-18 IIISU-26 IVSU-5 VSU-122A VISU-8 VIIS-51 VIISU-14-1 VIIISU-14-2 IX212A XObject 261
China
Japan
Czechoslovakia
Sweden