A7 Medium Tank
The A7 Medium Tank[lower-alpha 1] was a British experimental medium tank design of the period between the two World Wars.
Medium Tank A7E1 Side View MT9639
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Medium Tank A7E1 Back View MT9639
Medium Tank A7E2 Front Side View MT9640
Medium Tank A7E2 Back Side View MT9640
Medium Tank A7E3 BMM117
The A7 was designed under the Chief Superintendent of Design at the Royal Ordnance Factory, Woolwich who built three prototypes between 1929 and 1937. The A7 never went into production as all prototypes proved mechanically unreliable.
| Type | Engine | Gearbox | Suspension | Theoretical Top Speed | Weight (tons) | Armament |
|---|---|---|---|---|---|---|
| A7E1 (1929-1931) | 120 hp V8 Petrol air cooled Armstrong Siddeley | 4-speed Armstrong Siddeley | Leaf Springs | 40 kph (24 kph during trials) | 14 | One 3pdr gun and two .303in Vickers machine guns |
| A7E2 (1929-1931) | 120 hp V8 Petrol air cooled Armstrong Siddeley | Wilson hydraulic planetary | Vertical Coil Springs | 40 kph (24 kph during trials) | 16.8 | One 3pdr gun and two .303in Vickers machine guns |
| A7E3 (1934-1937) | Associated Equipment Company (AEC) Twin 6-cylinder Diesel 7.74 L 126 hp (bus engines) | Wilson hydraulic planetary | Each road wheel received an individual vertical coil spring. | 39 kph on roads and 26 kph off-road | 18.2 | One 3pdr QF gun and two .303in Vickers machine guns |
See also
- Medium Mark III - another British medium tank under development at the same time
Notes
- the A7 was the British General Staff number identifying the specification
References
Wikimedia Commons has media related to Medium Tank A7.
- Rickard, J (22 February 2012), Medium Tank A7
- Archives, Tank (5 January 2019), The First Cruiser
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