I am considering taking my son's bike, equipped with Sora, stripping it and putting the modern components on an Austro-Daimler Steel frame as a commuter. I'm guessing that I'll run into problems like FD clamp fit/braze-on issues and bottom bracket issues.
Questions I have: How do I know what size FD?
Will the bottom bracket swap out or will I need a new one? How will I know?