Mechanical parts
Motorcycle Cylinder Block (Ceramic Series)
- Bounding box
- 95.0 × 90.0 × 100.0 mm
- Engine
- Precision B-rep
- Parameters
- 14
- Published
- November 4, 2026
Download
Free to download and use. See the terms.
The prompt
Act as a precise mechanical 3D CAD generator. Create a parametric 3D model of an aftermarket racing motorcycle cylinder block (ceramic series) by strictly following these step-by-step geometric Boolean operations in millimeters (mm): Base Body: Create a main asymmetric rectangular block that is 95.0 mm wide (X-axis) and 90.0 mm deep (Y-axis), extruded to an exact Z-axis deck height of 78.0 mm. Central Bore: Cut a central cylindrical hole with a diameter of exactly 54.0 mm completely through the Z-axis of the base body. Bottom Spigot: From the bottom face of the base body, extrude a cylinder downwards by 22.0 mm along the Z-axis. This bottom cylinder must have an inner diameter of 54.0 mm (matching the bore) and an outer diameter of 58.0 mm. Bolt Pattern: Cut four vertical clearance holes, each 7.0 mm in diameter, completely through the 78.0 mm base body. Position them in a rectangular pattern measuring 48.0 mm by 50.0 mm, perfectly centered around the main bore. Add counterbores (10.0 mm diameter, 7.0 mm deep) at the top and bottom of these holes for dowel pins. Timing Chain Cavity: On the extreme left side of the base body, cut a large vertical slot (obround shape) measuring approximately 26.0 mm wide and 55.0 mm long, completely through the Z-axis, to create the hollow cavity for the timing chain. Cooling Fins & Vertical Ribs: Apply a horizontal rib pattern to the outer exterior of the base body. Create 6 horizontal cooling fins across the Z-axis with 3.0 mm empty grooves between them. Crucially, add 5 evenly spaced vertical support ribs on the exterior faces that intersect the horizontal fins, forming a reinforced grid-like anti-vibration structure. Apply 1.0 mm fillets to all inner corners of this grid."
Parameters
| Name | Value | Range |
|---|---|---|
| Block Width (X) | 95 mm | 80 – 120 |
| Block Depth (Y) | 90 mm | 70 – 110 |
| Deck Height (Z) | 78 mm | 50 – 100 |
| Cylinder Bore Diameter | 54 mm | 40 – 70 |
| Spigot Length | 22 mm | 10 – 35 |
| Spigot Outer Diameter | 58 mm | 55 – 75 |
| Bolt Pitch X | 48 mm | 30 – 70 |
| Bolt Pitch Y | 50 mm | 30 – 70 |
| Bolt Hole Diameter | 7 mm | 5 – 10 |
| Counterbore Diameter | 10 mm | 8 – 14 |
| Counterbore Depth | 7 mm | 3 – 12 |
| Timing Chain Width | 26 mm | 18 – 35 |
| Timing Chain Length | 55 mm | 40 – 70 |
| Cooling Fin Count | 6 mm | 4 – 10 |
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.
More models
Browse the full gallery →Plastic Bottle with Screw Cap
A plastic bottle with a twist-on screw cap. Adjustable bottle diameter, height, and cap height.
Copper Cold-Plate Base with Fin Channels and Face-Seal Groove
1. Copper Base Create a rectangular copper base 84 × 84 mm. Use C110 ETP copper. Finished overall base thickness is 5.70 mm. The bottom floor thickness below the channels is 2.50 m
Spring Cup
"Create a cylindrical spring cup. The main body has an outer diameter of 14 mm and a total height of 5 mm. Cut a centered recessed pocket into the top face that is 8.5 mm in diamet
M6 Thumb Screw
Create ONLY a mechanical thumb screw. This is NOT a knob. Create a real M6 thumb screw used in industrial machinery. Features: • Circular head 22 mm diameter • Head height 12 m
Engine Piston
make me a cylinder/piston for an engine. The bottom hole to connect to the cranckshaft needs to be 24 mm in diameter
Nuclear Medicine Center Functional Floor Plan (Parametric Wall Model)
Create a **2D architectural floor plan in DWG format** for a new **Nuclear Medicine Center**. This is a **generic conceptual functional layout**, NOT a construction-ready project.