| T17E1: General | |||
| Date of first acceptance | October 1942 | Total acceptances | 2,844 |
| Manufacturer | Chevrolet Division of General Motors | Crew |
|
| T17E1: Dimensions | |||
| Combat weight | 30,705lbs 13,928kg |
Height | 112" 284cm |
| Length | 216" 549cm |
Width | 106" 269cm |
| Tread | 89" 230cm |
Wheelbase | 120" 305cm |
| Ground clearance | 15" 38cm |
Fire Height | 78" 200cm |
| Turret ring diameter | 54" 140cm |
Ground pressure, zero penetration | 60.5psi 4.25kg/cm² |
| T17E1: Armament | |||||
| Type | Mount | Ammunition | Traverse | Max traverse rate | Elevation |
| 37mm Gun M6 | M24 in turret | 103 rounds | 360° (manual and hydraulic) |
18°/sec | +40° to -7° (manual) |
| .30cal M1919A4 MG | Coaxial to 37mm gun | 5,250 rounds | 360° (manual and hydraulic) |
18°/sec | +40° to -7° (manual) |
| .30cal M1919A4 MG | Ball mount M13, D72084, or D32971 in right bow | M13: 34° (17° left and right; manual) |
-- | M13: +22°45' to -10° (manual | |
| Aiming equipment | |||||
| Periscope M4 with telescope M40 for gunner | |||||
| T17E1: Armor | ||
| Assembly | ||
| Welding | ||
| Hull | ||
| Rolled homogeneous steel | ||
| Location | Thickness | Angle from vertical |
| Upper front | .875" 2.22cm |
30° |
| Lower front | .625" 1.59cm |
45° |
| Sides | .75" 1.9cm |
13° |
| Rear | .375" .953cm |
30° |
| Top | .50" 1.3cm |
90° |
| Front floor | .50" 1.3cm |
90° |
| Rear floor | .25" .64cm |
90° |
| Turret | ||
| Cast homogeneous steel | ||
| Location | Thickness | Angle from vertical |
| Gun shield | 1.00" 2.54cm |
0° to 52° |
| Front | 1.75" 4.45cm |
45° |
| Sides | 1.25" 3.18cm |
22° |
| Rear | 1.25" 3.18cm |
12° |
| Top | .50" 1.3cm |
90° |
| T17E1: Automotive | |||||
| Engine | Twin GMC 270; 12 cylinder (6/engine), 4 cycle, in-line gasoline | ||||
| Horsepower | Net: 194@3,000rpm (97/engine) |
Torque | Net: 432.6 ft-lb@1,000rpm (216.3/engine) |
Fuel capacity | 62gal 230L |
| Transmission | Twin Hydramatic, 4 speeds forward, 1 reverse | ||||
| Steering | Steering wheel | ||||
| Brakes | Hydraulic, internal expanding | ||||
| T17E1: Suspension | ||
| Type | Road wheels | Shock absorbers |
| Semi-elliptic leaf spring | 2/side | On each wheel |
| T17E1: Performance | |||
| Max level road speed | 55mph 89kph |
Max trench | 18" 46cm |
| Max grade | 57% | Angle of approach | 57° |
| Angle of departure | 40° | Max vertical obstacle | 21" 53cm |
| Min turning diameter | 55' 17m |
Max fording depth | 32" 81cm |
| Cruising range with two 38gal (140L) jettison fuel tanks | ~450mi, roads ~720km, roads |
||
The 4x4 T17E1 was produced for the British, who dubbed it Staghound I. (Staghounds II and III were British modifications of the Staghound I and were armed with their 3" tank howitzer or the turret from the Crusader tank with the OQF 75mm Mk.V, respectively.) Standardization as the M6 was proposed in the US, but this never occurred. Each engine was provided with its own Hydramatic transmission and gear reduction case, and power was routed from these to a single two-speed transfer case. The engines could be operated singly as well as together. The hull was designed so that a frame was not required; elements including the suspension, transfer case, and steering gear were attached directly to the hull. Early T17E1s were equipped with an elevation stabilizer for the main gun. With 4" (10cm) of penetration, the ground pressure was reduced to 17.95psi (1.260kg/cm²).
Late-production T17E1s featured the combination gun mount M24A1 with a larger, angular, pyramid-like gun shield at the base of the 37mm gun that included an aperture for the coaxial machine gun. The side armor was raised ~30mm (~1.2") to better protect the turret ring; a visible step was present as it transitioned to the hull rear. The engine covers were changed to a hinged design instead of being bolted down, and the lifting hooks on the hull rear were consequently changed to a folding type that used the rear hinge as its base. A mount for another .30cal M1919A4 machine gun was added to the center of the turret roof rear during production, and a spotlight that could be controlled from the vehicle interior was installed near the turret roof center. From May 1943, a 2" smoke mortar was installed in the turret, firing through an opening in the roof. Fourteen smoke bombs were stowed.
