The negative of "The Romance of the Motorcar" is titled "The Motorcar and its Mechanism." This record details differences between the pos and neg reels for what is essentially the same film. Check against other records.
Reel 8. The Universal Joint is described via diagrams and animations. A joint is taken apart. Fabric discs are shown via diagrams. C/U of the part in the engine. Propeller shaft is described and shown. Bevel pinion is featured. Torque reaction is described via an animation. The torque tube is shown via a diagram. The back axle is described. Car chassis is turned over to show the location of the back axle. Internal workings are shown. Cornering is illustrated by two mechanics who turn two wheels at different rates. C/U of cogs being turned by hand. The Differential device is described. Stop frame animation used to show trajectory of wheels when a car turns. Problems that would be encountered if both wheels solidly connected to the axle are illustrated. Various parts of the differential are seen in C/U. Piece is assembled and rotated for the camera. Then inserted in place to show movement. Disc is rotated. C/Us of various cogs. Two wheels turn to show the movement of the differential. Chain is attached to one of the wheels to show what happens when only the other wheel is moved. Chain is then attached to the other wheel to show movement when only the other moves. C/U of cogs.