Tiny Trak wheelbase finder tools

thingiverse

Welcome to my very first published project!\ I've been experimenting with 123D design by remixing several Tiny Trak type models, and I'll upload them once they're complete. While remixing, I found it challenging to locate the exact wheelbase for undocumented Lego tracks or random eBay rubber tank treads. As I haven't printed this tool yet, here's a work-in-progress model that makes finding the correct wheelbase easier. To get started, print out the existing wheel models you plan to add to your design, or create new wheels from scratch. Next, print the motor block and idle block for the parts you'll use in your model. Mount the wheels onto your chosen drive and idle blocks and add the track. Space them apart with an M8 rod and suitable nuts, or the included printable one, which requires M3 bolts to secure it in place. You can adjust the balance between tension and motor load by experimenting with different settings. Measure the distance between the flats in the grooves (see image) of both blocks, and use this measurement in your model design. I've arranged the parts in a way that makes them easy to print, but feel free to rearrange them or modify the supports as needed. Some supports are modeled in, so you can turn them off in your slicer if desired. If you have a motor you'd like to use, let me know and I'll add it to this model to make it more useful for others. Just send me a message and we can take it from there. I've included a SMARS wheel, which is linked to its original source. If you're new to Tiny Traks, check out the community on here or YouTube, and also look for the Facebook group dedicated to these models: https://www.facebook.com/groups/181517579149618/.