Before revision: History A Model T chassis ready for its body All steel chassis and all steel bodyBody by Edward G Budd Manufacturing Company of Philadelphia for John and Horace Dodgepage 106, George A Oliver, A History of Coachbuilding, Cassell, London, 1962 The Ford Model T carried the tradition of body-on-frame over from horse-drawn buggies, helping to facilitate high volume manufacturing on a moving assembly line.Great Moments in Body-on-Frame Car Construction WSJ, May 2, 2014 In the United States, frequent changes in automotive design made it necessary to use a ladder frame rather than unibody construction to make it possible to change the design without having to change the chassis , allowing frequent changes and improvements to the car's bodywork and interior (where they were most noticeable to customers) while leaving the chassis and driveline unchanged, and thus keeping costs down and design times short.
After revision: History A Model T chassis ready for its body All steel chassis and all steel bodyBody by Edward G Budd Manufacturing Company of Philadelphia for John and Horace Dodgepage 106, George A Oliver, A History of Coachbuilding, Cassell, London, 1962 The Ford Model T carried the tradition of body-on-frame over from horse-drawn buggies, helping to facilitate high volume manufacturing on a moving assembly line.Great Moments in Body-on-Frame Car Construction WSJ, May 2, 2014 The use of steel ladder and X frame chassis allowed numerous vehicles to share a chassisdrivetrain while making changes to bodywork and interiors relatively easy, and thus keeping costs down and design times short.