Suspension Rebound, Buffer, Bump Stop

thingiverse

Coil spring base automotive suspensions typically feature a rubber rebound to limit motion when the maximum compression of the suspension is reached. Over time, older vehicles may experience deterioration in these rebounds. In my case, I found the "foamed polyurethane" rebounds on the rear suspension of my 1988 Merkur Scorpio to be nearly nonexistent. To mimic the elastic consistency of the original material, I experimented with printing small test cylinders using different infill percentages with a 90 durometer polyurethane filament. Thirty percent seemed suitable for my application, but you may need to experiment for your specific needs. Recognizing this design has broad applications, I made it parametric so users can customize settings to suit their own projects. The default settings and included .stl file should work well for Sierra/Scorpio/Xr4ti vehicles. The SCAD file is straightforward, making it easy to understand and modify. This application extends beyond automotive suspensions; you could also create rebounds for door stops as an example. Further discussion and more information can be found on the Merkur Club Forum at http://forum.merkurclub.com/forum/viewtopic.php?f=29&t=32858.