The point was that the inner chain ring was so far inboard that the derailleur "bottomed out" on the seat tube before it carried the chain to the ring. Having the chain ring(s) as far inboard as possible while clearing the chain stay is not the goal -- clearing the chain stay, getting the Q-factor right, and getting the chain line right are the goals. Sometimes Q-factor and chain line cannot both be optimized.
Last edited by dy60; 10-04-22 at 06:51 AM.
Reason: Added thought