Historical Vehicle Fleet
1928 Antique Dump Truck (Model AA) History
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This is the first Model AA and replaced the Model TT.
- Weight empty: 3,500 pounds
- Load capacity 1.5 yards, 2 tons
- 131 inch wheelbase
- 20 inch wheels
Approximately 5,000,000 Model As and AAs were made.
- Wood-frame steel body cab safety-glass
- Windshield opens for ventilation
- Hand operated windshield wiper (driver’s side only)
- Hand operated dump body (crank on helper’s side)
Advertised in 1928 as “…ample room for a driver and two helpers.”
- Cost of Ford AA cab & chassis in 1928: $610
- Cost of dump body & hand operated hydraulic hoist in 1928: $175
1928 Model AA* Heavy Duty Ford Truck
- 4 cylinder 200 cubic inch engine
- 4.2:1 compression
- 40 break HP @ 2200 RPM
- 128 foot-pounds of torque @ 1000 RPM
- Engine oiling is pump,splash & gravity system
- Three-speed transmission and dual-drive auxiliary transmission: 6 forward and 2 reverse speeds
- 6 volt electric or hand-crank engine starting
- Mechanically actuated brakes
- Front shocks only
Hauling Comparison
| 1928 | 2006 | |
|---|---|---|
| Capacity | 2 tons | 100 tons |
| Empty weight | 1.5 tons | 80 tons |
| Top speed | 40 mph | 40 mph |
* Ford’s Model AA Truck was the heavy duty version of the Model A car and pick-up truck
1950 Antique Concrete Mixer History
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In 1950, Graniterock purchased its first “new” fleet of concrete mixers: eleven Ford F-6 Cab-Over-Engine (COE) trucks equipped with 2-yard Willard mixers from the Ford dealer in Salinas.
For 1950 F-Series Trucks
- First all-new post-war truck design from Ford–the beginning of Ford’s “F-Series Trucks.”
- Advertised as the “Million Dollar Cab”– wider cabs with larger doors, more head room and leg room, better visibility and better ventilation.
- A new “floating” driver’s seat (coil spring with hydraulic shock absorber) to improve the ride.
Flathead V8 Engine
- Advertised in 1950 as having a “Top Speed of 51 mph”
- 239.4 cubic inch Flathead V8
- 100 hp @ 3600 rpm
- 180 ft lbs torque @ 2000 rpm
- 4-speed transmission, 2-speed axel
Willard Concrete Mixer
- Mixing capacity: 2-yards @ 8–12 rpm
- Agitating capacity: 2½-yards @ 2–5 rpm
- Drum driven by truck motor via Power Take Off (PTO) and chain, 18 gallon water tank
Mixer Comparison
| 1950 | 2009 | |
|---|---|---|
| Empty weight | 4½ tons | 14½ tons |
| Loaded weight | 8½ tons | 35 tons |
| Wheel base | 9 feet | 23 feet |
| Wheel base | 17 feet | 40 feet |
