M40/M43

M40M43 (Stock)

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

M12

M40/M43

M53/M55

VIII

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.

• M40A1
• B-C 155 55 bis
• B-C 155 56

M40A1

Stock

B-C 155 55 bis

	Level	Gun	Weight (t)	Average Penetration (mm)		Rate of Fire	Dispersion at 100 m	Aiming Time
	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
	IV	Wright Continental R-975C1	516	400	20

	Level	Suspension	Weight (t)	Load Limit	Traverse Speed (deg/s)
	VII	M40	15000	37	20

	Level	Radio	Weight (t)	Signal Range (m)
	IV	SCR 510	0	325

B-C 155 55 bis

Speed

B-C 155 56

	Level	Gun	Weight (t)	Average Penetration (mm)		Rate of Fire	Dispersion at 100 m	Aiming Time
	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
	V	Wright Continental R-975C4	550	460	20

	Level	Suspension	Weight (t)	Load Limit	Traverse Speed (deg/s)
	VIII	M43	15000	39.5	22

	Level	Radio	Weight (t)	Signal Range (m)
	VI	SCR 610	0	420

B-C 155 56

Attack

M53/M55

	Level	Gun	Weight (t)	Average Penetration (mm)		Rate of Fire	Dispersion at 100 m	Aiming Time
	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
	VI	Ford GAA early	708	500	20

	Level	Suspension	Weight (t)	Load Limit	Traverse Speed (deg/s)
	VIII	M43	15000	39.5	22

	Level	Radio	Weight (t)	Signal Range (m)
	X	SCR 619	0	750

Compatible Equipment

Compatible Consumables

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.

click to read more...

Historical Gallery

• 

  The M40 variant, with the 155 mm Gun M1A1

• 

  The M43 variant, with the 203 mm Howitzer M1

Sources and External Links

External Links

• M40 Gun Motor Carriage and M43 Howitzer Motor Carriage Photos & history.
• [Wikipedia]

USA

Self-Propelled Guns

ja:XBOX:M40M43