| T1 light tank / T1 Cunningham | |
|---|---|
 A T1E1 light tank | |
| Type | Light tank |
| Place of origin | United States |
| Service history | |
| In service | Prototype only |
| Used by | United States of America |
| Production history | |
| Designer | U.S. Army, Ordnance Department |
| Designed | 1927 |
| Manufacturer | James Cunningham, Son and Company (Rochester, New York) |
| Produced | Prototypes only 1927–1932 |
| No. built | 6 |
| Variants | T1 prototype, T1E1, T1E2, T1E3, T1E4, T1E5, T1E6 |
| Specifications | |
| Mass | T1: 7.5 short tons (6.8 t) T1E1: 8.3 short tons (7.5 t) 4.62 without modules T1E2: 8.9 short tons (8.1 t) T1E3: 8.5 short tons (7.7 t) T1E4: 8.6 short tons (7.8 t) T1E6: 9.95 short tons (9.03 t) |
| Length | T1: 12 ft 6 in (3.810 m) T1E1, T1E2, T1E3: 12 ft 8+1⁄2 in (3.874 m) T1E4: 15 ft 5 in (4.699 m) |
| Width | T1, T1E1, T1E3: 5 ft 10+1⁄2 in (1.791 m) T1E2: 6 ft 2 in (1.880 m) T1E4: 7 ft 2+3⁄4 in (2.203 m) |
| Height | T1: 7 ft 1+1⁄2 in (2.172 m) T1E1, T1E3: 7 ft 1+5⁄8 in (2.175 m) T1E2: 7 ft 6+1⁄2 in (2.299 m) T1E4: 6 ft 6+3⁄4 in (2.000 m) |
| Crew | Two (commander/gunner, driver) |
| Armor | T1, T1E1: 0.25–0.375 in (6.4–9.5 mm) T1E2, T1E3, T1E4: 0.25–0.625 in (6.4–15.9 mm) T1E6: 0.375–0.625 in (9.5–15.9 mm) |
Main armament | T1, T1E1: 37 mm M1918 short tank gun T1E2, T1E3: 37 mm semi-automatic long-barreled Browning T1E4, T1E6: 37 mm semi-automatic M1924 T1HMC: 75mm M1 howitzer |
Secondary armament | .30 caliber (.30-06 Springfield) M1919 Browning machine gun (coaxial) |
| Engine | Gasoline, water-cooled. Most T1 variants: Cunningham V8. T1E6: American-LaFrance V12. T1: 105 hp (78 kW) T1E1: 110 hp (82 kW) T1E2, T1E3: 132 hp (98 kW) T1E4, T1E5: 140 hp (100 kW) T1E6: 244 hp (182 kW) |
| Suspension | T1, T1E1, T1E2: Equalizing links with four 2-wheel bogies, no springs T1E3: Coil springs with four 2-wheel bogies T1E4, T1E6: Semielliptic leaf springs with two articulated 4-wheel bogies |
Operational range | T1: 65 mi (105 km) T1E2, T1E3: 75 mi (121 km) |
| Maximum speed | T1: 20 mph (32 km/h) T1E1: 18 mph (29 km/h) T1E2: 16 mph (26 km/h) T1E3: 21.9 mph (35.2 km/h) T1E4, T1E6: 20 mph (32 km/h) |
The T1 light tank was a United States Army light tank of the late 1920s and early 1930s that was only built in prototype form. The tank was an Army design built by James Cunningham, Son and Company. Introduced in 1927, it was developed up through 1932 as a series of modified versions (T1E1, T1E2, T1E3, T1E4, T1E5, and T1E6). The tank was never mass-produced, nor was it ever used in combat.