12-roller 66mm Omni wheel

thingiverse

This wheel design is part of a robot car project I made with some friends for a school competition, perfectly compatible with common 12mm hex wheel adapter. More details at: https://oddeyemotion.github.io/odd/projects/p04-submarine/p04-30-39-technical-details/p04-32-hardware/p04-32-00-drivetrain/#customized-omni-wheels I used the original design as a guide to redraw it with the same diameter as my tractor wheels, which are approximately 66-67mm in diameter. I replaced the paper clips, which are about 1mm in diameter, with a bunch of 2mm steel rods that were cut to 25-27mm in length. Our printer has an error margin of about 0.4mm. It is recommended to use 3 layers of heat shrink tubing for each roller's coverage. Order of assembly: Top half 1 - Top half 2 - Middle plus - Middle - Bottom half 2 - Bottom half 1 (I am sorry for the confusion T__T) Secured with: - 6x regular 8mm M3 bolts layered with 3x female M3 brass hex standoff pillar rod spacer in the middle - 12x regular pairs of 12mm M2 bolts and nuts (recommended 10mm in length for better fit)