Originally Posted by
Schlafen
This right here is where my trust issues with steel frames come from lol 😅.
On a side note, internal guide tubes (ones I've seen anyway) are usually brass tubes, not steel, brazed to the top tube, so there's really no potential for rust damage, it is the worst place for constant water ingress as the tubing is at its thinnest.
Oh absolutely, though chances are this particular bike was left outside in the rain for longer periods of time. I had a hell of a time to remove the rusted sealed bottom bracket and well.. this is how I bought it: