I am a firm believer in universal and expandable.

I have found tank treads to be an art form in itself!

Nothing was working for me off of Thingiverse as far as "Tank Treads" because most designs were already built for some robot or too big or too small so I needed something that was "Just right". And sturdy / easy to build....

So I made some universal ones with the idea that others might be in the same boat.

These are for small to medium sized bots if your bot is larger than 12in by 12in I would find a different build though.

6in by 6in for the smaller cap.

They are test driven and work great!

Want to buy the Kit?
https://www.etsy.com/listing/119500536/universal-tank-tread-kit

You will need a

42 x 39.5 x 22.5mmWire length: 30cmWeight: 44g

Servo with full rotation for this build
The rest of the info is in the videos below

I have opened up a new youtube for inventing and support for "things".

Here is total support if you are building this.
http://www.youtube.com/playlist?list=PL7tGtxtIW0Iz4-HdzY9o4sXoViCJbVHw_

To make straight Pla Spikes watch this video
http://www.youtube.com/watch?v=WqNxYHWpYko

enjoy!

I am hoping to have them as a kit that you can purchase on my etsy site in the next few days.