Originally Posted by
unworthy1
I dunno about that being caused by a bad press-in of the lower cup (it's possible, for sure, but that's a Campy HS): the head tube will be deformed by that as well, and it does have a replacement fork...I'd guess a front-end crash. AL will crack when steel will bend. And it is an ALAN, but re-badged as Fanini (another one I didn't know about, add it to the growing list of re-badges for ALAN)
Question: did they cut threads in either of those headtube joints? Or were those joints just glued? I'm guessing that threads could also weaken the lugs just a bit.
I dunno. I can't envision a crash scenario where the bottom lug would fail that way (maybe straight down?). It still could be that the head tube was reamed for a JIS headset originally (29.8 or so) and the campy bottom race would be 30.2. Or it could be a lousy reaming job.
Mash that sucka in there and hit a bump...ta da!