Armored Car Number 11-5

No. 1: General
Date of first acceptance 1915
Manufacturer Jeffery Motor Co. Crew 4 men
No. 1: Dimensions
Combat weight 12,600lbs
Height ~96"
Length overall 216"
Width ~76"
Tread ~70"
Wheelbase 124"
Ground clearance ~16"
No. 1: Armament
Type Mount Traverse Elevation
Two .30cal Colt or Benet-Mercie Model 1909 MGs Turret mounts Upper turret: 360°
+80° to -10°
No. 1: Armor
Maximum .2"
Minimum .15"
No. 1: Automotive
Engine Buda HU; 4 cylinder, 4 cycle, vertical L-head gasoline
Horsepower 40 Fuel capacity 20gal
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
Turning radius 28'

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.




  1. Hunnicutt, R.P. Armored Car: A History of American Wheeled Combat Vehicles. Novato, CA: Presidio Press, 2002. Reprinted from Armored Car, R.P. Hunnicutt ©2002, available from Presidio Press, 505B San Martin Drive, Suite 160, Novato, CA 94945.
  2. Haugh, David R. "Armored Car No. 1 (Jeffery)." Ed. Patrick Keenan. 21 April 2008. Accessed 9 December 2023 <>.
  3. AGF Board No. 2. Development of Armored Vehicles, volume II: Armored Cars, Scout Cars, and Personnel Carriers.
  4. Crismon, Fred W. U.S. Military Wheeled Vehicles. Minneapolis: Victory Publishing, Ltd., 2001.
  5. Tank Data, vol. 2. Aberdeen Proving Ground, MD: US Army Ordnance School, Jul 1958.
Last updated 9 Dec 2023.
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