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Key Structural Design Considerations for Compact Chassis with Zero Turn Radius

This document highlights crucial structural design considerations for developing small or zero-degree turn radius chassis. It examines size restrictions, ground clearance, friction, and the implications of weight and center of gravity on wheel design. Different wheel types, including multi-directional and standard rubber wheels, are explored for optimal performance. Material selection focuses on lightweight and machinability, alongside chassis shapes, such as square and octagonal. The design incorporates innovative steering mechanisms, ensuring the assembly utilizes modified servos effectively for robust operation.

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Key Structural Design Considerations for Compact Chassis with Zero Turn Radius

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Presentation Transcript

  1. Structural Design Considerations • Small or 0° turn radius • Given size restriction and ground clearance • Friction • Type of drive-train • Weight and center of gravity location

  2. Wheels • First considered to determine range of chassis size to work with • Quantity and type which help with finalizing drive-train • Explored track style, multi-directional and standard hobbyist rubber wheels • Size to provide enough ground clearance

  3. Chassis and Drive-train • Shapes and sizes • Square, triangular and rectangular • Material • Lightweight and easy to machine • Deck quantity • Quantity, speed and torque of motors • Steering mechanism

  4. Wheels-Current Design • Multi-directional • Rubber coated to provide enough friction • (4) 4” diameter wheels • Assembled 90° apart • Provides 0° turn radius

  5. Chassis and Drive-train/Current Design • Octagonal shape keeping wheels 90° apart • Aluminum chassis • Two decks • Four modified servos to drive • No steering required

  6. Rough Assembly Sketch

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