Jack

Jack is a friendly and enthusiastic front loader, who works for the Sodor Construction Company.

Personality
Jack is brave and will not take any hassle, as seen whenever he stands up to Max and Monty when they bully him and Alfie. He is also kind and caring, he also likes to jump in and get the job done even with other jobs that the other vehicles are assigned to do. But despite the fact that he was trying to be helpful and mean well, he has learned from Miss Jenny's words, to not jump into another job that is not his own.

Basis
Between the sixth and twelfth series, Jack was based on a Nuffield tractor with an added front loader.

Since the special, King of the Railway, Jack was designed as a International 454 tractor. Because of this, his face shape has changed dramatically from round to rectangular.

Livery
Jack was painted red with the top half of his cab and his wheels painted cream. He had the number 11 painted in cream on his sides. From King of the Railway onwards, the top half of his cab and his number are painted white, his back wheels are painted grey and his front wheels are painted red.

Appearances

 * Season 1 - The Trouble With Trucks (cameo)

Trivia

 * In some promotional sketches of the Pack, Jack is seen with a backhoe arm and bucket. According to an SiF interview with Chris Lloyd, the arm was built, but was too problematic as it was hard to store all of the radio gear inside the model. An interview with Phil Fehrle gives a very different reason: "...if a story required Jack to be digging (using his back-hoe) and interacting with another character working at the same time, his face would be facing away from the action. For story purposes, it was important to feature the faces as much as possible; thus, the backhoe was removed".
 * Jack has had a few modifications in the television series:
 * King of the Railway:
 * He gained hydraulics.
 * His exhaust pipe became taller and gained holes on the sides, as well as a handle.
 * He decreased in size.
 * His face changed from round to square.
 * His rear wheel cover was moved back.
 * The tread patterns on his tyres changed slightly.
 * The colour of his alloys also changed from cream to grey.
 * His roof became completely orange.
 * His number increased in size.
 * His bucket increased in size.
 * The colour of his cab changed from cream to white.
 * Nathan Clarke did an audio sample for Jack on his DAA Management Page.
 * A semi-complete face mask of Jack was preserved by the Top Props preservation group.
 * Jack's Trackmaster Push Along toy lacks his number, his larger wheel is also sized down.