I stumbled across Pierre Jansen's website https://www.pjvision.nl/
while searching for a project to challenge and demonstrate the capabilities of FreeCAD's development version. I intend to create a complete parametric model in all its gory details from Pierre's CAD drawings using the PartDesign workbench. Hopefully, I can duplicate his model (less rendering) as shown on his website. Pierre created his exceptional model and rendering using Bentley's high-end MicroStation V8i modeller and the Luxology rendering engine from measurements taken from an actual engine.
The Clerget 9-cylinder engine is unusual (to me, at least) in that the cylinders rotate and the crankshaft is stationary. So far, all of the major rotating housings have been completed as shown in the following screen grabs with a few comments about the process:
The extensive use of Draft>Arrays has created a large file (66+ Mb already) which slows FreeCAD's response significantly so it is likely I will delete all the arrays in my working file and only use them for display purposes. Next up are the major stationary parts such as the engine mounting structure and crankshaft. Stay tuned for an update.
OS: Windows 10
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.13826 (Git)
Build type: Release
Python version: 2.7.14
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.2.0
Locale: English/UnitedStates (en_US)