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PostPosted: Fri Aug 09, 2013 10:23 am 
Retro Guru

Joined: Fri Dec 14, 2012 5:19 pm
Posts: 487
Location: Italy
Hello,
I'm looking for the following BB ( NOS or nice condition ) :
- No. 1 : BB UN90 or BB UN91 : 68mm - English threads - 107 or 113mm axle
- No. 1 : BB UN72 or BB UN71 : 68mm - English threads - 122mm axle
BB Pics will be appreciated
Thanks


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PostPosted: Mon Aug 12, 2013 11:13 am 
Gold Trader
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Joined: Thu Oct 01, 2009 12:31 pm
Posts: 1281
Location: Munich, Germany
Hi,

I was looking for the same bottom brackets like you and ended up buying some BB-UN55.
These ones have the metal cups just like the ones you are looking for. The difference to up to my knowledge is that on one side the bearing and the cup is one unit and can't be changed seperately.
I think i still have some of these laying around doing nothing. Either they are 107 or 113mm. I don't know right now.
If you are interested i will have a look. Let me know.

Cheers,

Adam


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PostPosted: Mon Aug 12, 2013 2:43 pm 
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Joined: Tue Jun 28, 2011 4:22 pm
Posts: 1935
Location: Berlin
Another difference between BB-UN5X and -UN/9X/7X: around 100g heavier! But at least readily available. :)


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PostPosted: Mon Aug 12, 2013 3:00 pm 
Retro Guru

Joined: Fri Dec 14, 2012 5:19 pm
Posts: 487
Location: Italy
Thanks mates for your tips ,
yes, BB UN-55 could be an alternative solution to my original request ....


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