The Ford Model TT is a truck made by

Ford Ford commonly refers to: * Ford Motor Company, an automobile manufacturer founded by Henry Ford * Ford (crossing), a shallow crossing on a river Ford may also refer to: Ford Motor Company * Henry Ford, founder of the Ford Motor Company * Ford F ...

. It was based on the

Ford Model T The Ford Model T is an automobile that was produced by Ford Motor Company from October 1, 1908, to May 26, 1927. It is generally regarded as the first affordable automobile, which made car travel available to middle-class Americans. The relati ...

, but with a longer wheelbase, and a heavier frame and rear

axle An axle or axletree is a central shaft for a rotating wheel or gear. On wheeled vehicles, the axle may be fixed to the wheels, rotating with them, or fixed to the vehicle, with the wheels rotating around the axle. In the former case, bearing ...

, giving it a rating of .

Production

When the first three units were produced in 1917, the Model TT was sold as a

chassis A chassis (, ; plural ''chassis'' from French châssis ) is the load-bearing framework of an artificial object, which structurally supports the object in its construction and function. An example of a chassis is a vehicle frame, the underpart ...

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. In 1925, a hand-operated windshield wiper was added.

Military production

In his ''World 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,..." 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." Many remained in service into the 1930s. Below are the numbers of Model T trucks produced each year, not including Canadian production.

Drivetrain

The rear axle of the TT has a worm drive and

crown wheel A crown is a traditional form of head adornment, or hat, worn by monarchs as a symbol of their power and dignity. A crown is often, by extension, a symbol of the monarch's government or items endorsed by it. The word itself is used, partic ...

, unlike the Model T's crown wheel and pinion. The worm is located at the end of the drive shaft and above the crown wheel. The wheelbase of the Model TT is , compared to for the Model T. It was often equipped with an accessory

gearbox Propulsion transmission is the mode of transmitting and controlling propulsion power of a machine. The term ''transmission'' properly refers to the whole drivetrain, including clutch, gearbox, prop shaft (for rear-wheel drive vehicles), differe ...

, such as the Ruckstell 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. With standard gearing, a speed of not more than was recommended, and with special gearing, a speed of not more than was recommended. 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. It was replaced by the

Ford Model AA Ford Model AA is a truck from Ford. As the Model T and TT became obsolete and needed to be replaced, Henry Ford began initial designs on the Model A and Model AA in 1926. Basic chassis layout was done rapidly and mechanical development wa ...

truck in 1928. File:Ford Shell Fuel Lkw IMG 20180417 192801.jpg , 1926 Model TT tank truck File:Ford TT ombyggd.jpg , Ford TT used as a bus in Skanör, Sweden in 1920 File:15 23 1089 ford museum.jpg ,

Blue Bird The bluebirds are a North American group of medium-sized, mostly insectivorous or omnivorous birds in the order of Passerines in the genus ''Sialia'' of the thrush family (Turdidae). Bluebirds are one of the few thrush genera in the Americas. B ...

school bus built on a 1927 Ford Model TT

References

Bibliography

External links

Ford Model TT brochure from 1923
{{DEFAULTSORT:Ford Model Tt Model TT Motor vehicles manufactured in the United States Vehicles introduced in 1917