| No. 1: General | |||
| Date of first acceptance | 1915 | ||
| Manufacturer | Jeffery Motor Co. | Crew | 4 men |
| No. 1: Dimensions | |||
| Combat weight | 12,600lbs 5,720kg |
Height | ~96" ~240cm |
| Length overall | 216" 549cm |
Width | ~76" ~190cm |
| Tread | ~70" ~180cm |
Wheelbase | 124" 315cm |
| Ground clearance | ~16" ~41cm |
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| No. 1: Armament | |||
| Type | Mount | Traverse | Elevation |
| Two .30cal Colt or Benet-Mercie Model 1909 MGs | Turret mounts | Upper turret: 360° (manual) |
+80° to -10° (manual) |
| No. 1: Armor | |
| Maximum | .2" .51cm |
| Minimum | .15" .38cm |
| No. 1: Automotive | |||
| Engine | Buda HU; 4 cylinder, 4 cycle, vertical L-head gasoline | ||
| Horsepower | 40 | Fuel capacity | 20gal 76L |
| Transmission | 6 speeds forward, 6 reverse | ||
| Steering | Dual steering wheels | ||
| No. 1: Suspension | |
| Type | Road wheels |
| Leaf spring | 2/side |
| No. 1: Performance | |||
| Max level road speed | 25mph 40kph |
Turning radius | 28' 8.5m |
The armored car Number 1 was based on the Jeffery Quad truck chassis. This was a 4-wheel drive vehicle that also featured 4-wheel steering and dual controls at the front and rear of the vehicle. The rear driver may not have been able to perform gear changes, however. The vehicle had two turrets, one on the roof and one behind the cab which had part of its traverse fouled by the front of the vehicle. Two spare machine guns were carried.
