The above link is to a folder which contains a solidworks .prt file and an STL file for my flywheel cage for RS (and stryfe, though I don't have Stryfe to measure). This is designed for an 8.5mm flywheel gap on stock wheels, which should theoretically hit about 140FPS. This design is UNTESTED, I'm waiting on my friend to print some over winter break. If you use it, I'd love feedback.
I'm releasing this in the spirit of pushing forward the Hobby, because there are no open source cages that I'm aware of. Feel free to use, modify, etc. as you see fit. As long as you credit me, I'm happy. I have no desire to sell this particular cage, if you think you can, go ahead. If you want other file types, let me know and I'll supply them if I can.
Future goals in this project are a hyperfire cage, a single-piece multistage system, and experimenting with different geometries. If you have other stuff you'd like me to persue, let me know. I need a winter break project.
If there are specific gaps for certain flywheels that people want, let me know. That dimension is very easy to change.
Credit: 95% of this was done by measuring stock parts. Flywheel gap was chosen based on reported measurements of the Artifact Red system.