SummarySayha - X FPV Race Frame Quadcopter frame based on the Impulse RC Alien and Lumenier QAV-R with center X removable arms. Its available in various sizes supporting 4", 5" and 6" propellers. Its light and super stiff if printed in ABS 100% infill. Included are all the .STL files for all the models and also the 123Design files in case anyone wants to continue and improve the work I did on these. The frame is quite light and stiff, but if extra strength is necessary there's plenty of ways to achieve this and maintain the overall aesthetics. I threw the frame over and over against a wall and from a 5th floor balcony and it survived perfectly. Only thing I hope is.. if you remix or modify the original model to keep using the same base name for the frame (Sayha). I sent a couple frames to a UK fpv racer who threw a quick build and gave it ago and the feedback was positive! If you end up building one.. let me know your feedback! Cheers!Print SettingsPrinter Brand: RepRapPrinter: Wanhao Duplicator i3Rafts: NoSupports: NoResolution: 0.2mmInfill: 100%Notes: ABS recomended. Some of the STLs might need proper orientation onto the print bed.InstructionsThe hardware required to assemble the frame is:Sayha 4" / 5" (for either) 4x - M3x20mm (4 arm screws that will come up of the bottom plate, serve for the flight controller mount) 24x - M3x12mm 12x - M3 Nyloc Nuts 8x - 35mm Spacers Sayha 6" 4x - M3x20mm 28x - M3x12mm (4 extra for the arms) 12x - M3 Nyloc Nuts 8x - 35mm Spacers The assembly should be straight forward, but have a look at the pictures if you have questions, or post something in here and I'll try to answer it the best I can.Thing FilesSTLs / 123dx (File Structure)This is the naming convention used in the files: X = Frame Size (4,5,6) Complete Frame: SX_A_All.stl - All four arms SX_B_Plate.stl- Bottom plate SX_B_PlateLock.stl - Bottom plate lock SX_T_Plate.stl - Top plate SX_T_Plate_XT60.stl - Top XT60 lock L_Pads.stl - Landing Pads for the arms Individual Arms: SX_A_FrontLeft.stl - Arm front left SX_A_FrontRight.stl - Arm front right SX_A_BackLeft.stl - Arm back left SX_A_BackRight.stl - Arm back right Some of the STLs might need proper orientation onto the print bed.