Much of my personal US1 Trucking set is original from the 1980s. Recently I decided to get it out of the storage tote and set it up. I quickly realized that some vital parts were missing like the backstop for the car unloader accessory. Without this small plastic piece, the cars will not unload from the trailer! After a little research, I discovered that there are free 3-D files for many of these parts! You can download the .STL file and print these on your own 3D printer, or you can take them to a local 3D print shop or upload the .STL file to an online printer like Shapeways!
![Tyco Us1 Operating Log Loading Bulldozer 3D Printed Automatic Reverse Retractor Modification #3415](https://tycous1trucking.com/wp-content/uploads/2022/09/us1-trucking-modifications.jpg)
Tractor Self-Reset
Tyco US1 Tractor Self-Reset Modification. Allows the tractor to return to its original position without pushing it back. This is a must-have IMHO. I never liked forcing the bulldozer back into place! Check out our installation video and demonstration of this cool US1 Trucking mod!