Ford Model AA
name = Ford Model AA
Ford Motor Company
production = 1927–1932
Ford Model TT
successor = Ford Model BB
class = Heavy Commercial
platform = AA Chassis
body_style = AA – Chassis 131 1/2”
AA – Chassis 157”
AA – Dual Chassis 131 ½”
AA – Dual Chassis 157”
AA – Dual
Pickup 131 ½”
Deluxe Pickup 131 ½”
Deluxe Pickup 157”
Express Pickup 131 ½”
Service Pickup 131 ½”
engine = 201 CID (3.3 L)
transmission = 4 speed and reverse
wheelbase = convert|131|in|mm|0|abbr=on
length = Varied by Body Style
width = convert|67|in|mm|0|abbr=on
height = Varied by Body Style
weight = Varied by Body Style
fuel_capacity= Convert|10.5|usgal|L impgal|0|abbr=on
Ford Model A
designer = Henry Ford and Edsel Ford
Ford Model AA is a
truckfrom Ford. As the Model Tand TT became obsoleteand needed to be replaced, Henry Fordbegan initial designs on the Model Aand Model AA in 1926. Basic chassislayout was done rapidly and mechanical development was moved forward quickly. Body design and style was developed and then outsourced to various body manufacturers, including Briggs and Murray. The designs of the Model A shared parts and materials with the Model AA Ford, notably the body, engineand interior. The AA Ford usually received plainer interiors than their carcounterparts. The Model AA Ford followed similar design changes that the Model A Ford underwent during the four year production, but often those changes followed on a delay, anywhere from threeto nine months. The mechanical changes and upgrades were done during production of the vehicles. Body changes that occurred between 1929 and 1930 were also integrated into the Ford AA production, but leftover parts were used longer in the heavy commercial trucks.
The Model AA Ford is powered by the same 201-cubic-inch (3.3 L) engine
Inline-4engine that the Model A Ford used. The engine produced a maximum of forty horsepowerat 2,200 rpm. The engine featured an up-draft carburetor, six-volt generator, 2-blade fan, mechanical water pump, mechanical oil pump, electric starterand four-row radiator. All of these features were identical to the Model A Ford except the radiator. The engine could also be crank started if necessary by a hand crankthat is inserted through a hole in the radiator shell. The Model AA was based on a chassis that was similar in design to the Model A Ford, except it was substantially larger and heavier to accommodate the work this truck was designed for.
Model AA Ford has a four-speed
transmission. The transmission is geared lower than the Model A Ford to provide more power to move a loaded truck. This lower gearing reduced the top speed of the truck when compared to the Model A Ford. The transmission also featured a lock-out on the shift knob for reverse that required a lever to be activated with the thumb so reversecould be engaged. This was done to prevent accidental engagement of reverse while the truck was in motion. Early trucks had a worm gearrear-end that limited the top speed of the truck. That rear-end was replaced by a normal rear axleto improve the speed of the truck. Later models were fitted with braces on the outer casing of the rear-end to provide additional support to the rear-end housing.
The suspension of the AA Truck was similar to the Model A Ford in the front end. A
leaf springis centered in the front ‘A’ frame over the front axle. Shock absorbers were available for the front end. The rear suspension differed from the Model A Ford. The AA had leaf-springs mounted to the chassis and shackled to the rear-axle. The rear suspension did not have shocks.
The controls in the Model AA Ford are entirely mechanical, except the
windshield wiperin later models. The brakes are mechanical and the truck has four oversized drum brakesto stop the vehicle. The mechanical system is a pull leversystem that applies the force from the pedal to a pivotthat pulls the brake rods that expand the brakes in the drums. The brake light is activated when the brake pedal is pushed. The brakes are proportioned more toward the rear drums. The parking brakeis a chromelever on the floor with a release button on the top. The windshield wipers started as hand cranked and later models were a vacuum pumppowered from the exhaustline. The horn button is mounted in the middle of the steering wheelassembly. Controls for the lights are also incorporated into the steering assembly. The switch was a three-stop switch for parking lights, headlightsand high-beams. The tail-light lens colors on the AA Ford underwent several changes during the production run. Two levers are mounted on the steering columnto adjust the engine. The left lever controls the manual advance of the timing. Adjusting the timing of the engine change the time that a spark will occur in the combustion chamber and those changes affect the performance of the engine. The right lever is a manual control for the throttle. The throttle can be adjusted to ease the shifting of the transmission and the idling speed of the engine. Underneath the dash on the right side is the choke rod. The choke can adjust the flow of gasolinefrom the carburetor into the engine. Turning the knobon the choke rod clockwisecloses the fuel flow, leaning out the engine; turning the knob counterclockwiseopens the fuel flow to the engine.
The gauge cluster in the Model AA Ford includes three basic gauges. The cluster is in a
diamondformation, with the start key and pop-out switchis on the leftpoint. The top of the cluster holds the gas gauge, which directly connects into the gas tank, behind the dashboard. The rightpoint holds the amp gauge, which shows the charge rate of the generator. The bottom of the dash holds the speedometerand odometer. Additional gauges can be mounted below the cluster if desired.
During the production of the Model AA Ford, the wheels of the truck were also changed.
Spoked wheelssimilar in appearance to Model A wheels but much heavier were used during the production in 1928-1929. Twenty inch Disc wheels were produced by Bud for Ford. In 1930, a new style of disc wheel was adopted. These wheels were used for 1930 and part of 1931. The final wheels used were a further modification of the 1930 wheel with a raised center to reinforce the wheel. Wheel nuts changed with each new style of wheel to meet the changes made in the designs of the wheel. Special wheels were produced for Ambulancesand Funeral Coaches. In 1930-1931 a dual-wheel adapter was developed and used for a variety of body styles, including dump-trucks, Fire trucksand Stake Trucks.
The Model AA Ford was available with a number of options. Two wheelbases were available, the short wheelbase of convert|131.5|in|mm and the long wheelbase of convert|157|in|mm. Various body styles were available on different chassis.
The Model AA Ford was available in a variety of body styles from the Ford Corporation. Specialty bodies include: Funeral Coach, Ambulance, Express Pickup, Dump Truck, and a cab without a bed. The cab only model was sold to customers who wanted a custom body to be built by an after-market company. Corporations could have custom paint and other modifications made by Ford for fleets of vehicles. The
U.S. Postal Servicepurchased a fleet of vehicles from Ford that had custom built bodies by outside builders.
Ford licensed the manufacture of the Model A and AA to a variety of nations, notably the Soviet Union. The GAZ AA was produced in the 1930s and 1940s.
The Model AA Ford was also built in several nations in Europe under license from the Ford Corporation. Several armored vehicles were based on the chassis. [ [http://www.armyvehicles.dk/armorproto.htm Danish Army Vehicles] , retrieved on
October 17 2007.]
Today, enthusiasm for the Model AA Ford continues. Preservation and restoration of these vehicles remains popular. There are two national clubs that support the Model A/Model AA hobby and one club dedicated specifically to the Model AA. The Model A Restorers Club and the Model A Ford Club of America, along with the Ford Model AA Truck Club work to support members with technical advice and support along with displaying members vehicles as they are being restored.
A Model AA Truck that was used by gangster
Al Caponeto transport beer is on display at the Historic auto attractionsmuseum in Roscoe, IL.
*Ford Model AA Truck Club - [http://www.fmaatc.org/]
*The Model A Ford Club of America - [http://www.modelarestorers.org/main/]
*The Model A Restorers Club - [http://www.modelarestorers.org/main/]
* [http://www.netclassics.com/truck/aa-truck.html The AA Truck Pages]
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