Gears and transmission
Educational 2WD Robot Chassis (Exploded)
- Bounding box
- 1821.8 × 170 × 70 mm
- Engine
- 3D Printing B-rep
- Parameters
- 47
- Published
- November 4, 2026
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The prompt
Design a compact, low-profile, 1.5 kg class, 2WD educational robotics chassis inspired by the attached reference image. **Overall dimensions** - Length: 260 mm - Width: 210 mm - Height: 120 mm maximum - Target robot mass: approximately 1.5 kg - Keep all dimensions within the specified envelope. **Chassis design** 1. Create a compact central chassis with a rigid base plate. 2. Use curved, organically shaped side body panels similar to the reference image. 3. Design a removable upper deck secured with bolts. 4. Keep the centre section spacious for electronics, battery and wiring. 5. Make the overall structure low-profile and compact. 6. Include rounded external edges and accessible maintenance points. **Drive system** - Two-wheel-drive configuration. - Two Johnson 300 RPM geared DC motors. - Two independently driven rear wheels. - Two passive front skids. - Create adjustable motor mounting brackets. - Include mounting slots compatible with the actual motor dimensions supplied by the user. - Do not assume motor dimensions or hole spacing. - Keep the motor shafts properly aligned with the wheel mounting positions. **Front section** - Two independent passive skid mounting locations. - Reinforced mounting points. - Smooth, low-profile front geometry. **Electronics and assembly** - Dedicated battery compartment. - Mounting locations for a motor driver and receiver. - Cable routing channels. - Removable electronics cover. - Modular mounting points on the upper deck for non-weapon accessories. **CAD requirements** - Generate a complete 3D model, not just a concept illustration. - Use editable, parametric geometry. - Keep components as separate parts. - Show an isometric view, top view, front view and side view. - Provide dimension annotations in millimetres. - Generate an exploded assembly view. - Flag any dimensions that require user measurement rather than inventing them. **Visual style** Follow the attached reference image: white 3D-printed body, curved side panels, exposed wheels, metallic upper plate, visible fasteners and a compact industrial robotics appearance. Prioritise manufacturability, serviceability and structural integrity. i have also provided the skecth of drive motors with dimesion for holes to mount them . and also a demonstration of the robots final look
Parameters
| Name | Value | Range |
|---|---|---|
| Gap between exploded parts | 40 mm | 10 – 150 |
| Base plate length | 220 mm | 150 – 260 |
| Base plate width | 170 mm | 120 – 230 |
| Base plate thickness | 6 mm | 3 – 12 |
| Plate corner radius | 10 mm | 0 – 30 |
| Electronics bay length | 95 mm | 40 – 180 |
| Electronics bay width | 90 mm | 40 – 160 |
| Electronics bay depth | 3 mm | 1 – 5 |
| Battery bay length | 85 mm | 40 – 150 |
| Battery bay width | 55 mm | 30 – 120 |
| Battery bay depth | 3 mm | 1 – 5 |
| Cable channel width | 8 mm | 3 – 20 |
| Cable channel depth | 2 mm | 1 – 4 |
| Panel length | 240 mm | 150 – 260 |
| Panel max height | 55 mm | 20 – 80 |
| Panel end height | 20 mm | 5 – 55 |
| Panel thickness | 8 mm | 3 – 15 |
| Fastener boss diameter | 10 mm | 5 – 20 |
| Fastener boss height | 5 mm | 2 – 12 |
| Deck length | 210 mm | 150 – 255 |
| Deck width | 150 mm | 100 – 200 |
| Deck thickness | 5 mm | 2 – 10 |
| Deck corner radius | 6 mm | 0 – 25 |
| Cover length | 120 mm | 60 – 180 |
| Cover width | 90 mm | 50 – 150 |
| Cover height | 12 mm | 5 – 30 |
| Cover wall thickness | 2.5 mm | 1.2 – 6 |
| Cover corner radius | 8 mm | 1 – 25 |
| FLAG MEASURE: motor shaft diameter | 6 mm | 3 – 12 |
| FLAG MEASURE: shaft centre height | 20 mm | 5 – 35 |
| FLAG MEASURE: motor hole spacing | 25 mm | 10 – 40 |
| Motor screw clearance hole | 3.4 mm | 2.5 – 6 |
| Bracket foot length | 45 mm | 25 – 80 |
| Bracket width | 30 mm | 20 – 60 |
| Bracket plate thickness | 4 mm | 2 – 10 |
| Bracket upright height | 28 mm | 15 – 50 |
| Wheel diameter | 70 mm | 30 – 120 |
| Wheel width | 26 mm | 10 – 60 |
| FLAG MEASURE: hub bore to match shaft | 6.2 mm | 3 – 15 |
| Skid length | 35 mm | 15 – 60 |
| Skid width | 20 mm | 10 – 50 |
| Skid height | 15 mm | 5 – 35 |
| Screw shank diameter | 3 mm | 2 – 6 |
| Screw head diameter | 5.5 mm | 3 – 10 |
| Spacer outer diameter | 6 mm | 3 – 15 |
| Spacer inner diameter | 3.4 mm | 2 – 10 |
| Spacer length | 10 mm | 3 – 30 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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