- Bearings/Wheel friction
- Wheel inertia
- Eyelet friction
- General axle and cartridge Alignment
I looked around and determined that a few free open source suites, including openFOAM were up to the task. However I took stock of my skill and found that is was going to take me quiet a while to polish my skill set to feel like I was getting any sort of realist results from the software.
I later found a virtual wind tunnel program in the Autodesk Labs, Project Falcon. This piece of software provides a CFD results for testing body shapes for cars, motorcycles etc. with only a STL triangulated model and a few model parameters.
So I wiped up some simple body shapes in my CAD software an gave it a whirl. Now, I don't expect that the project Falcon is providing my results that are even within 20% of reality, But it did give me a method to compare the relative differences between the designs.
I made many digital models and came up with some general ideas of what the car should be shaped like.