Gears and transmission
500 cc Single-Cylinder Two-Stroke Engine Assembly
- Bounding box
- 285.0 × 371.8 × 369.7 mm
- Engine
- Precision B-rep
- Parameters
- 26
- Published
- October 23, 2026
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The prompt
Create a complete 3D CAD model of a 500 cc single-cylinder two-stroke engine (90 mm bore, 78.59 mm stroke). I need BOTH: 1. **Fully assembled 3D model:** All components correctly positioned, connected and assembled into a functional mechanical layout. 2. **Exploded view:** The same components separated along logical assembly directions, clearly showing how they fit together. Include the cylinder, piston, piston rings, wrist pin, connecting rod, crankshaft, two-piece crankcase, cylinder head, direct fuel injector, spark plug, external mechanical air compressor, fresh-air ducts, separate pressure-fed oil system, rotary exhaust valve at the exhaust outlet, toothed belts, pulleys, bearings, seals and fasteners. The piston must move with the crankshaft through a connecting rod. The compressor supplies fresh air independently of the crankcase. The rotary exhaust valve is belt-driven by the crankshaft. Create actual editable 3D solid geometry, not just a picture, rendering or illustration. Keep components as separate parts in the CAD assembly. Provide the assembled model, exploded view, sectional views and STEP export if supported. Do not generate only an exploded picture. If you cannot create a functional CAD assembly, clearly state this limitation.
Parameters
| Name | Value | Range |
|---|---|---|
| Cylinder Bore | 90 mm | 20 – 200 |
| Stroke | 78.59 mm | 20 – 200 |
| Crank Radius | 39.3 mm | 10 – 100 |
| Connecting Rod Length | 150 mm | 50 – 300 |
| Exploded Layout Gap | 40 mm | -260 – 200 |
| Assembly Mode (0=assembled, 1=exploded) | 0 | 0 – 1 |
| Cylinder Liner Wall Thickness | 8 mm | 3 – 20 |
| Cylinder Liner Height | 145 mm | 50 – 300 |
| Inlet Port Width | 40 mm | 10 – 80 |
| Inlet Port Height | 25 mm | 5 – 50 |
| Exhaust Port Diameter | 35 mm | 10 – 80 |
| Cylinder Head Height | 40 mm | 10 – 100 |
| Combustion Chamber Depth | 20 mm | 5 – 50 |
| Injector Angle (deg) | 30 deg | 0 – 60 |
| Piston Height | 50 mm | 20 – 100 |
| Wrist Pin Diameter | 22 mm | 6 – 50 |
| Crankpin Diameter | 34 mm | 10 – 60 |
| Main Journal Diameter | 40 mm | 10 – 80 |
| Crankcase Wall Thickness | 8 mm | 3 – 20 |
| Rotary Valve Diameter | 40 mm | 10 – 80 |
| Crank Pulley Diameter | 50 mm | 20 – 100 |
| Valve Pulley Diameter | 35 mm | 15 – 80 |
| Compressor Pulley Diameter | 45 mm | 15 – 90 |
| Compressor Bore | 45 mm | 10 – 100 |
| Fresh Air Duct Diameter | 25 mm | 5 – 60 |
| Oil Filter Diameter | 50 mm | 10 – 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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