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T40/M9 Tank Destroyer

From Wikipedia, the free encyclopedia

3 inch Gun Motor Carriage T40
3-inch Gun Motor Carriage T40 (M9)
TypeTank destroyer
Place of originUnited States
Production history
Produced1941/1942
No. built1
Specifications
Mass33 tons
Length18.54 ft (5.65 m)
Width8.86 ft (2.70 m)
Height10.24 ft (3.12 m)
Crew5

Main
armament
3-inch gun M1918
EngineWright R975 EC2
Maximum speed 25 mi (40 km)

The 3 inch Gun Motor Carriage T40, later given the production model number M9 was a US tank destroyer (a self-propelled anti-tank gun), of the early part of World War II. It mounted a 3-inch anti-aircraft gun on a M3 Medium Tank hull. A small production run of 50 tanks was planned in 1942. This was cancelled due to the unavailability of suitable guns, and the entry into production of a similar vehicle, the M10 GMC tank destroyer which used a later version of the gun.

History

The M3 hull was used as the basis for a tank destroyer mounting the 3-inch gun, a reworked World War-era weapon - by removing the turret, sponson gun and hull roof. It was developed in September 1941 but in tests the resulting vehicle was judged to be too tall and the gun mount was not suitable for mass production so the T24 project was cancelled in 1942.[1][2][page needed]

The T40 was the T24 prototype rebuilt by Baldwin Locomotive Works in 1942[3] on the existing M3 Lee chassis to use redundant 3-inch M1918 anti-aircraft guns. The gun mounting was lower than the T24; on the T24 the gun had been level with the original hull roof. Fifty guns were thought to be available, and following successful trials of the T40, the design was standardized with designation M9 GMC with a "limited standard" production of fifty vehicles in April 1942. However only 28 guns were available and the M9s were not expected to be complete by the time the superior M10 tank destroyer design was in production, so the M9 was cancelled in August 1942.[1]

As well as doubts in the Ordnance Board about the design, the Tank Destroyer Board felt that the vehicle was too slow.[4]

See also

References

  1. ^ a b Chamberlain Ellis (1981) p 111
  2. ^ Chamberlain & Ellis 1970
  3. ^ Rickard, J. (1 February 2017). "T24 3in Gun Motor Carriage". historyofwar.org. Archived from the original on 1 July 2023. Retrieved 19 December 2023.
  4. ^ Zaloga p6-7

Sources

External links

This page was last edited on 22 April 2024, at 00:37
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