FourSpeed Gearbox Simple Simulation Model 3D2 Overview A 3D printable, educational gearbox model that demonstrates the mechanics of a fourspeed transmission. The 3D2 model is designed for straightforward printing, assembly, and testing to help users visualize gear ratios, shifting, and basic power transfer. Key benefits Clear demonstration of mechanical principles: Shows how different gear pairs change output speed and torque, useful for teaching and handson learning. Easy to print and assemble: Designed for desktop FDM printers with parts that fit common build volumes and minimal postprocessing. and testable: Printable components allow users to modify gear sizes, spacing, or add mounting features for prototypes and experiments. Compact and durable when printed in standard filaments: Works well with PLA, PETG, or ABS depending on strength and wear requirements. Practical for quick iterations: Fast to reprint and modify, making it useful for classroom labs, maker projects, and functional prototypes. Function and performance Four distinct gear ratios selectable by a simple shifting mechanism that mimics core transmission behavior. Smooth meshing when printed with correct tolerances and assembled according to instructions, enabling reliable manual operation and observation. Demonstrates load distribution, gear train sequencing, and reversible motion for basic testing and educational use. Compatibility and material guidance Designed for common FDM 3D printers and slicers; parts print with standard nozzle sizes and typical layer heights. Recommended filaments: PLA for ease of printing and dimensional accuracy, PETG or ABS for higher impact resistance and wear performance. Print orientation and slight tolerance adjustments may be needed to ensure smooth gear engagement depending on printer calibration. Typical use scenarios Classroom and workshops: Use as a handson teaching aid for mechanics, physics, or engineering courses to illustrate gear ratios and transmission concepts. Prototype and product development: Integrate the model into small machinery mockups or robotics projects to test fit, movement, and spatial arrangements before committing to metal parts. Maker projects and demonstrations: Build a display or kinetic model that shows shifting between four speeds for exhibits, hobby builds, or technical demonstrations. What you get A readytoprint fourspeed gearbox simulation model labeled 3D2, intended for educational and prototyping use. Parts designed for straightforward assembly and repeatable testing after printing and minor finishing. Notes for results Calibrate printer for accurate dimensions and check clearances between gear teeth before final assembly. Choose filament based on desired balance between printability and wear resistance. Use light lubrication or slight dimensional adjustments if gears bind after initial assembly. Suitable for educators, makers, students, and engineers who need a lowcost, modifiable gearbox model to study, prototype, or demonstrate fourspeed transmission behavior.