train undercarriage 3d model

Low poly mechanical undercarriage components for a vintage train carriage, excluding wheels. Include simplified geometric forms representing suspension systems, axles, brake assemblies, piping, cylindrical tanks, boxy housings, support beams, and structural frames. Focus on clear silhouettes and modular pieces that can be reused and arranged beneath train cars. Shapes should be clean, slightly stylized but grounded in real mechanical design. Include variations in size and density to avoid repetition. Ensure parts feel functional and believable, with layered depth and overlapping forms. No text, no materials, no colors, no environment, isolated assets only.