This 9 Cylinder Radial Engine is Designed and Simulated in CATIA V5. All Dimensions are real.The original CAT PART and CAT PRODUCT files are available and also you can download STEP and CGRFiles. The model is rendered in KEYSHOT 5.The model is correctly assembled and you can simulate the mechanism in CATIA DMU Kinematics and it is very helpful for learning CATIA constraints and also according to real dimensions , It is good for 3D Printing.You can watch the animated video of this model in the link below on youtube.https://youtu.be/mShIHrpj91kif you have any problem in this model, please do not hesitate to contact me.Best Regards