Old 08-11-20, 03:34 PM
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jimbossa
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Location: Manhattan, New York
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Colnago Master Bottom Bracket Issue (NYC)

I have a late 80's/early 90's Colnago Master Piu with 1st gen 8speed dura ace. Recently, my cranks have started shifting laterally, about 2-3mm. I checked/tightened the chainrings so that isn't the problem. I have taken it to four different bike shops in Manhattan and they have all concluded that it is a bottom bracket issue but none have a square taper Italian BB and 3/4 shops tell me they do not know when they can get one. The last one was not confident when they would have it in and asked for me to check-in a week from now.

I remember relying on this forum and Sheldon Brown's (RIP) site back when I built the bike in 2009. I consulted Sheldon Brown's site again and just wanted to see if people could confirm that I need a 70mm x 113mm bottom bracket to match with my 8-speed groupset?
https://sheldonbrown.com/bbsize.html#dura

Would this work: https://www.ebay.com/itm/SHIMANO-BOT...8AAOxy9tpR84Fz

My plan was to originally upgrade my entire drivetrain to SRAM Force 22 and a new wheelset once Covid-19 died down and prices came back down but i just got laid off on Friday so that isn't an option anymore.

As an aside, are there any folks in the NYC area who have a spare Italian bottom bracket kicking around that i can buy or a spot/set up for me to attempt the BB change myself?

If I recall correctly about the rules of the forum, I have included a pic of my bike.
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