This is model of a Racing/Motorsport lightened flywheel, tested within Solidworks FEA at 500Nm of torque. This design passes both stress and frequency tests.
Modelled within Solidworks 2015, updated and rendered within Solidworks 2016. Up to 5064 polygons and 5196 vertices. Solidworks material is AISI 4130 Steel (Annealed at 865 Celsius). Photos include PhotoView 360 and RealView Graphics.
Feel free to use this model how you desire. Suitable for 3D renderings for visualizations, vehicle simulation, real-time scenes, CAD/FEA work, etc.