This assembly brings together three printable files to secure a small motor to a 16 mm structural tube within an experimental FPV project. It includes two alternative variants of the main body—one standard and one with a different fillet finish—and an independent top cover to close the tube clamp in the fully printed configuration. Each body combines a vertical semicircular cradle for the tube with a lightweight, perforated circular plate for the motor. The three STLs are independent, standalone, and reproducible pieces; they do not include the motor, carbon tube, propeller, inserts, screws, or metal clamps.
The source describes two possible configurations. The first uses the printed body and the printed cover, secured by four screws. The second employs one of the bodies with external aluminum top clamps. It also mentions M3 heat-set inserts at the bottom. These indications identify the design intent, but the dimensions of the holes, the motor pattern, the length of the screws, and the fit over the tube must be measured and verified during actual assembly. Universal compatibility and structural strength are not guaranteed.
To prepare for printing, check each STL separately and maintain the millimeter scale. The two bases measure approximately 39.92 × 26.15 × 70.36 mm; the cover measures 28.30 × 33.32 × 11 mm. Orient the pieces seeking a stable base and minimizing supports inside the holes and the cradle. As a starting point, a layer height of 0.16–0.20 mm, four or more perimeters, and moderate-to-high infill can be used. The source recommends PA6 or carbon fiber-reinforced PLA, but any loaded material requires a wear-resistant nozzle and proper drying. A test print in a simple material is preferred before committing hardware.
This design is an experimental component, not a certified aeronautical part. Before installing the motor or propeller, check the tightness, alignment, tube retention, layer integrity, inserts, and the absence of interference. Perform static tests at low power first, with eye protection and no people nearby. Do not use the part in manned systems, critical loads, or operations over people or property. Replace any component with cracks, delamination, looseness, or thermal deformation.
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