Assembly Instructions

The entire model was constructed from:

• Cardstock or thick paper
• Standard Printer Paper
• Toothpicks
• Hot Glue
• Standard Glue
• Masking Tape

Karakuri Models used were:

• Cam D (x2)
• Gear B
• Gear B Supplemental [Gear B Supplemental.pdf]
• Original F1 Car Model (x3) [Original F1 Car Model.pdf]

Follow guidelines in the book to create 2 Cam D models and one Gear B model from card stock. Exclude part 13 when constructing model Gear B as we will replace it with Rotating Body 3. Note that regular printer paper will not be durable enough to translate the input torque through the system, and the input shaft will crumple as a result. Connect the 2 Cam models so that the cam orientations are offset from each other by 180° then use standard glue to attach the input shafts. Construct the 3 F1 Car Models from lightweight standard printer paper. Create toothpick harnesses for the Car models using hot glue as shown below and attach them at the following locations relative to the cams with hot glue. 

Attach the completed F1 car models to the toothpick harnesses using hot glue or masking tape (depending on how temperament the desired bond). Ensure that the Ferrari at its maximum right position does not interfere with the Red Bull in its maximum left position while placing the cars.

Construct Rotating Body 3 in "Gear B Supplemental.pdf" from lightweight paper. Note that the dimensions of the outer cylinder face are too large to be printed on standard paper, so I glued 3 sheets of 11" paper together and resized the sheet to the appropriate length. I then joined the cylinder faces with masking tape. Add an appropriately-sized background of your choice to the rotating body! From card stock, create a circle as shown in "Gear B Supplemental.pdf" with radius slightly larger than the rotating body 3. Glue the support disk to the top surface of the gear model to keep the rotating body level and therefore the horizontal gear 2 level. Glue the Rotating Body 3 to part 8 allowing the lower surface of the body to rest on the support disk.

When combining the Cars and background assembly, determine the direction of input rotation that has the cars moving smoothest then orient the background so it revolves counter to the direction the cars are pointed. If the background is rotating in the same direction the cars are moving, rotate the background assembly 180°, and it will be going in the correct direction. Use standard glue to connect the background assembly with the cam assembly.

The finished model going well below one rev/s is shown below.