Gears and transmission
Stair-Climbing Wheelchair Assembly
- Bounding box
- 960.0 × 1815.0 × 1170.0 mm
- Engine
- Precision B-rep
- Parameters
- 26
- Published
- August 27, 2026
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The prompt
Create a conceptual stair-climbing wheelchair assembly. Use two identical tri-star wheel systems, one on each side. Each system has three medium-sized wheels positioned 120 degrees apart around a central rotating hub. Connect the hubs to left and right shafts. Add bearings supporting the shafts in the wheelchair frame. Place a simple differential gearbox between the shafts. Create a lightweight rectangular chassis and seat. Make all major dimensions editable.
Parameters
| Name | Value | Range |
|---|---|---|
| Wheel Diameter | 150 mm | 80 – 250 |
| Wheel Width | 40 mm | 20 – 80 |
| Tri-Star Arm Radius | 100 mm | 80 – 160 |
| Hub Diameter | 80 mm | 40 – 120 |
| Wheel Axle Diameter | 20 mm | 10 – 40 |
| Drive Shaft Length | 450 mm | 300 – 700 |
| Drive Shaft Diameter | 20 mm | 10 – 40 |
| Bearing Inner Diameter | 20 mm | 10 – 40 |
| Bearing Outer Diameter | 40 mm | 20 – 80 |
| Bearing Width | 12 mm | 8 – 30 |
| Differential Length | 100 mm | 60 – 200 |
| Differential Width | 80 mm | 50 – 150 |
| Differential Height | 80 mm | 50 – 150 |
| Frame Length | 900 mm | 600 – 1200 |
| Frame Width | 600 mm | 400 – 900 |
| Frame Height | 500 mm | 300 – 700 |
| Frame Tube Diameter | 30 mm | 15 – 60 |
| Frame Ground Clearance | 100 mm | 50 – 300 |
| Chassis Length | 800 mm | 500 – 1100 |
| Chassis Width | 500 mm | 300 – 800 |
| Chassis Thickness | 20 mm | 10 – 50 |
| Seat Width | 450 mm | 350 – 600 |
| Seat Depth | 450 mm | 350 – 600 |
| Seat Cushion Thickness | 50 mm | 20 – 100 |
| Backrest Height | 500 mm | 200 – 800 |
| Backrest Thickness | 50 mm | 20 – 100 |
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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