@sam I live in Durham, NC, which is about 100x more compact geographically than Atlanta. Here we have a thriving Bicycle Co-op which has a physical space full of donated bikes/parts, and tools and repair stands, and the mutual aid part comes via training people to do maintenance and repair, and in exchange for time, they get to build a bike for themselves.

https://www.durhambikecoop.org/

It’s a great model that has been really successful, and my primary concern would be how to replicate it in a city as huge and sprawling as ATL.