My beater setup:
Sugino RD
Mystery loose-ball BB, JIS taper
Formula/EAI

The chainline was way off when I had the chainring on the outside of the crankarms... I decided instead of switching out spindles, I could flip the chainring... did it, everything looks perfect now.*

*** Disclaimer: have yet to read this bike, sitting in a shop right now. My chain may still explode in a climactic fashion.