Summary

This Robotic track system has been in use in my classroom for two years. It is strong, robust and maintainable.

This model is the track only, but comes with a mount for the Pololu 25D series motors. There is also a frame mount that I used for the prototyping version (purple and yellow one in the images) of the tankbot which was able to withstand a 3kg rig being used in the classroom by 14 year olds for 4 semesters. The only time they broke was when they were driven off a table.

Here is a video of it in action in the classroom -> https://youtu.be/EVI0HyWWj3E

I cannot share the original CAD files I am sorry.

All parts and printing instructions are in a PDF Assembly Guide uploaded here.