Classic and Vintage Bicycles: What's it Worth? Appraisals and Inquiries - Colnago bottom bracket question

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HonoluluMatt
12-11-10, 04:19 PM
I need to upgrade the bottom bracket on my older Colnago - currently has loose bearings Zeus 2000 36x24, with a tapered 118 x 57C axle. Strangly enough, both sides of the bracket are proper threading ("righty-tighty, lefty-loosy"), even though that goes against what Sheldon B has on his site. I'd like to put in a Shimano cartridge to support an older Ultegra octalink crankset vice the late-80's Campy C-Record that I have currently, but I'm not wedded to the idea...any suggestions?

wrk101
12-11-10, 04:33 PM
Sounds like standard Italian threading to me. Which Sheldon has on his site as well.
T-Mar
12-12-10, 05:28 AM
+1, Italian is 36mm x 24TPI and both cups are right hand thread. Nothing strange there.

Bianchigirll
12-12-10, 07:58 AM
an "older ultegra octilink"? that sounds odd considering you are talking to a group that thinks a cartridge square taper BB is the 'latest and greatest' cycling invention

I don't understand why you want to take a Campi crank off but I think your hardest problem may be finding a Italian octalink BB
T-Mar
12-12-10, 06:07 PM
There's no problem getting Italian threaded, Octalink cartridge bottom brackets. The only issue is that they don't make inexpensive versions. You have to go with 105, 600 Ultegra or Dura-Ace.
HonoluluMatt
12-12-10, 11:16 PM
Only reason I was going with the possibility of a cartridge was that the bearings were definately shot on the current set-up, and I had the Ultegra set on hand. I checked the races and they seemed to be in good shape, so I ordered new .25" bearings off of SB's site. Hopefully, this will do the trick. Thanks for the comments.