Hey guys i'm looking into buying a vintage bianchi fork for my 80's bianchi frame.



The fork is this one:

Bianchi Dedacciai Forks Celeste Green Vintage Road CR MO | eBay

My frames headtube is around 13,9 cm (5,47inches) and the ebay description says that the forks steerer tube is 14,3cm (5,62inches). Will it fit?

The shortest stack threaded headset I am aware of needs a steer tube at least 30mm longer than the head tube. The fork you describe is only 4mm longer than the frame's head tube, so no.

You should measure your headtube of your frame and the stack height of your planned headset (crown race height up to the topmost lockring nut sans portions that are to be pressed into the frame) to compare to the length of steerer on that ebay fork. Eyeballing it, the fork looks too short. It's better to be slightly longer than too short as you can put 1" spacers under the lockring nut. If you get a fork that's too long, getting new threads cut is going to cost an arm & leg as it's a pretty specialized operation these days with many shops outright lacking the tap & die.

P.S. unicrown forks are fugly and you should get a lugged fork for that frame.

That's what i was afraid off, thanks for the quick answer

Thanks for the enlightment and the quick answer, now i know what kind of forks i can look for

And with the lugged fork, you are so right. I never thought about it until now, a lugged fork would look amazing!