Planetary Gearbox - 3.5:1 Reduction & Assembly Study

Make a compact mechanism understandable through detailed CAD, sections and exploded views. This planetary gearbox study uses a fixed ring, sun input and carrier output, with three planets and a theoretical 3.5:1 reduction. Project work includes an editable FreeCAD assembly, involute-based gear profiles, STEP files, selected prototype STL parts and drawings. Gear clearances were checked at sampled positions and across three pressure-angle configurations. The gallery exposes the gear arrangement and component structure. Need a mechanical assembly model or clear technical views for a design review? Send your references, dimensions and required deliverables through Cad Crowd. Independent portfolio demonstrator. Motion is prescribed; torque, efficiency, durability and production suitability require engineering review and physical testing.