I think the bike is an 85 or 86 Bianchi Campione D'italia. Everything looks OK, it’s the worse of the two 80’s Bianchis I got in a package deal. I am using this bike to do a light practice restoration with painting.
In any case, I am wondering how I go about replacing the bottom bracket on this thing. From what I can tell, it is a Ofmega Master Class, printed on the ‘axle’ is Ofmega 70.c. It appears to be symmetrical. Im willing to change cranks but everything appears stock on this bike (including brake pads, wheels, and tires) so wouldn’t mind keeping them.
Unsure about how these are measured. Including some pics. Hoping I can replace with a more modern BB.
Oh, and the reason I am replacing is because the plastic ‘cartridge’ that sits between the BB cups is busted. Guessing this is usually just how grease is contained. Still new to this. Any info/tips appreciated!
Thanks!
by kirkofalltrades
1 Comment
You’ve got the bottom bracket shell width and spindle length (you’ll need them in metric for replacement purposes) which are most important. Given this is a Bianchi you’ll also have to check whether the bb is Italian standard or English standard. Italian bb’s are right hand threaded on both sides, have a larger diameter shell and are 70 mm vs English’s 68. Based on your pictures it seems it’s Italian but check!
You might also be able to reuse this bottom bracket if the races on the cups and spindle aren’t damaged. The plastic sleeve is to keep stuff clean and you might be able to find a new one. It’s not essential so if this bike isn’t going to be seeing heavy use you could go without.