| Ford Model TT | |
|---|---|
 | |
| Overview | |
| Manufacturer | Ford |
| Production | 1917-1928 |
| Designer | Henry Ford and Edsel Ford |
| Body and chassis | |
| Class | Heavy commercial |
| Body style | 2-doorpickup truck 2-doorpanel truck 2-doorcanopy express 2-doorbox truck 2-doorstake truck |
| Platform | TT chassis |
| Related | Ford Model T |
| Powertrain | |
| Engine | 201 CID (3.3 L)4-cylinder inline |
| Transmission | 4-speedmanual andreverse |
| Dimensions | |
| Wheelbase | 131 in (3,327 mm) 157.5 in (4,000 mm) |
| Length | Varied by body style |
| Width | 67 in (1,702 mm) |
| Height | Varied by body style |
| Curb weight | Varied by body style |
| Chronology | |
| Successor | Ford Model AA |
TheFord Model TT is a truck made byFord. It was based on theFord Model T, but with a longer wheelbase, and a heavier frame and rearaxle, giving it a rating of 1short ton (0.91 t).
When the first three units were produced in 1917, the Model TT was sold as achassis with the buyer supplying a body. The price was $600. Starting in 1924, the truck was available with a factory-produced body. By 1926 the price had dropped to $325.[1] In 1925, a hand-operated windshield wiper was added.[2]
In hisWorld Encyclopedia of Military Vehicles, author Pat Ware writes that: "During World War I, the Model T was ... standardized in the "light" class. The first truck, using a long-wheelbase chassis designated Model TT, was launched in 1917. Although Ford ... was a pacifist, he was ... happy to supply the US Army with more than 12,000 of these vehicles,..."[3] and:"There was no civilian production of the Model Ts between 1917 and 1918."
Further on, Ware writes: "The Model T was widely used by the US and British armies during World War I as a staff car, ambulance, van and cargo truck, even as an artillery tractor, for which application the truck was fitted with twinned rear tyres."[3] Many remained in service into the 1930s.
Below are the numbers of Model T trucks produced each year, not including Canadian production.[4]
| Year | Production |
|---|---|
| 1917 | 3 |
| 1918 | 41,105 |
| 1919 | 70,816 |
| 1920 | 53,787 |
| 1921 | 64,796 |
| 1922 | 154,039 |
| 1923 | 246,817 |
| 1924 | 259,118 |
| 1925 | 306,434 |
| 1926 | 213,914 |
| 1927 | 74,335 |
The rear axle of the TT has aworm drive[1] andcrown wheel, unlike the Model T's crown wheel andpinion. The worm is located at the end of the drive shaft and above the crown wheel. The wheelbase of the Model TT is 125 inches (3,175 mm), compared to 100 inches (2,540 mm) for the Model T. It was often equipped with an accessorygearbox, such as theRuckstell or Jumbo gearboxes, which allow the truck to have intermediate gears between low and high, useful for hill climbing.
The Model TT was very durable for the time, but slow when compared to other trucks.[5] With standard gearing, a speed of not more than 15 mph (24 km/h) was recommended, and with special gearing, a speed of not more than 22 mph (35 km/h) was recommended.[6] Standard worm gear ratio is 7.25:1, and special gearing gives a ratio of 5.17:1. Because of this, accessory catalogs offered items to help give the Model TT more power.[7]
It was replaced by theFord Model AA truck in 1928.[8]
There were also variousdepot hacks made on the chassis of theFord Model TT with bodies built by independent coachbuilders. The Depot Hack was made to hold luggage and passengers and was used as aminibus-like vehicle ortaxi. It was specifically built to hold a high capacity of people and their luggage, the depot hack was not on Ford's catalogue but was made by independent firms who then marketed it as a passenger vehicle. It had a 20 hp (15 kW), 176 cu in (2,884 cc),[clarification needed] four-cylinder engine, and a 2-speed planetary transmission.[9][10]
Gunnell, John A. (2003).Standard Catalog of American Light-Duty Trucks. Iola, Wisconsin: Krause Publications.ISBN 0-87341-238-9.
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