Servo Turnout Motor for Model Railroads

thingiverse

Human: Parts to Build a Model Railroad Turnout Motor (Switch Machine) Using an SG90 Servo. Includes a bracket for mounting the servo and a plate to mount one or two SPDT microswitches for power routing or indicator applications. Two versions (L and R) are possible depending on which microswitch plate is used; not important in most cases, but I had a couple of really tight fits where the opposite hand unit made a difference! A short video of the finished device in action is included in the ZIP file. Print Settings Printer: XYZ Da Vinci AiO 1.0 Rafts: No Supports: No Resolution: Good or Excellent Infill: Default Notes: Best with ABS. Post-Printing Most of the holes should accommodate standard 2-56 machine screws or #2 sheet metal or wood screws. The two holes for securing the servo will accommodate the screws unmodified provided with a standard SG90 servo from eBay or other sources. The two holes on the bracket for mounting the microswitch plate work best if tapped to accept 2-56 machine screws. One or both of the small pivot holes for the 0.032" music wire actuator may need to be opened using a small drill bit. How I Designed This Original design was fabricated using various thicknesses of sheet styrene, then recreated using 123D Design software.