I made a CAD model showing the shock absorber of the SP (SportPro) models of the RS 125. The inner parts of such a component can be well presented in such a model.
Very interesting for me was the function of the valves of compression and rebound adjustment in equalizer tank and inside the piston rod.
![](https://hartrusion.com/wp-content/uploads/rs125-cad-SP-shockabsorber-01.jpg)
![](https://hartrusion.com/wp-content/uploads/rs125-cad-SP-shockabsorber-02-640x347.jpg)
![](https://hartrusion.com/wp-content/uploads/rs125-cad-SP-shockabsorber-03.jpg)
![](https://hartrusion.com/wp-content/uploads/rs125-cad-SP-shockabsorber-04.jpg)
![](https://hartrusion.com/wp-content/uploads/rs125-cad-SP-shockabsorber-05.jpg)
![](https://hartrusion.com/wp-content/uploads/rs125-cad-SP-shockabsorber-06.jpg)
![](https://hartrusion.com/wp-content/uploads/rs125-cad-SP-shockabsorber-07.jpg)
![](https://hartrusion.com/wp-content/uploads/rs125-cad-SP-shockabsorber-08.jpg)
![](https://hartrusion.com/wp-content/uploads/rs125-cad-SP-shockabsorber-09.jpg)
![](https://hartrusion.com/wp-content/uploads/rs125-cad-SP-shockabsorber-10.jpg)
![](https://hartrusion.com/wp-content/uploads/rs125-cad-SP-shockabsorber-11.jpg)
![](https://hartrusion.com/wp-content/uploads/rs125-cad-SP-shockabsorber-12.jpg)
Please note that these are not official drawings of the manufacturer but a model made from the parts. Some dimensions had to be estimated, since I have only rudimentary measuring equipment (caliper and radius gauge).
Download
The CAD model can be downloaded as export in different formats here (STEP AP203, IGES, 3MF, 3D-PDF, EASM). The 3D-PDF file is available both assembled and in exploded view. If you don’t have a CAD program, 3MF or the 3D-PDF are good for viewing. The EASM can be opened with the eDrawings Viewer which can be downloaded without any costs or registration needed.