Time to add the piece that absorbs the mechanical shock of small jolts to the wheel. This is the flexidisk! In this part we will be adding the motor hub attachment piece, then fastening the flexidisk to that. This is the part that will be very tedious and will require much patience. Best to take your time on this one. For this part you will need the two small flexi disks, the larger flexidisk, the motor hub attachment piece, 4x M3 8mm screws, and 5x M3 5mm screws and hex nuts. As well as the metal motor hub, its set screw, and allan key. All of these fasteners would be best to have blue threadlock on them, unless you plan on disassembling it without using it as a robot first.