I designed a DRS system for the OpenRC-F1 design contest. I tried to keep modifications to the minimum. I modified the rear wing and added a pin and an extra diffuser. You still need the original diffuser as mine only serves as a servo holder. You’ll need a radio system with 3 channels (throttle, steering and DRS). All print with no supports (except rear wing as original), 0.2 layer, 20% infill, 30-40mm/s PLA You’ll need: DRS_rear_wing.stl DRS_wing.stl DRS_pin.stl DRS_diffusser.stl 3 x M3x12mm screws and nuts 1 x micro servo sg90 or similar Instructions (see pictures); it is not difficult to assemble but it’s better if you follow this order: First attach the pin to your servo with one of the servo’s screw Then put the servo in the servo holder using another servo screw Now you can screw the wing structure (without the moving wing) to the car Then attach the moving wing to the pin with a 3mm screw and nut Now gently force the moving wing into the wing structure holes Finally mount the original diffuser with the other two 3mm screws Video: https://youtu.be/wcOxkoGnHrM Isn’t this awesome? A 3D printed F1 car with working DRS system!! Hope you like it; I’d appreciate it if you vote!! Thanks!