leaf spring frame
thingiverse
A leaf spring frame could potentially be suitable for a 4x4 model. To assemble, attach 4 wheels, 2 frames, and 4 leaf supports to the leaves. Then glue 2 axles and 2 transverse bars to the frame. Use acetone to bond the leaf support and frame together. Next, attach the leaf supports to the frame using a paper clip. Glue the axles to the leaves for added stability. To enhance traction, fit bicycle tubes around the wheels. Once complete, you can customize your creation as desired, and enjoy the benefits of your handiwork; perhaps even sharing it online for others to see in action, like this example: http://www.youtube.com/watch?v=wenR0qu2uEY.
With this file you will be able to print leaf spring frame with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on leaf spring frame.