Bottom Bracket Help
10-26-08 | 07:43 AM
#1
Thread Starter
China_Biker
Joined: Oct 2008
Posts: 3
Likes: 0
Bikes: Aerelli
Bottom Bracket Help
I have an Aerelli mountain bike, and I recently snapped the axle. The model number is a Shimano BB-UN72-E. I believe the cups are Itallian threaded 36x24's but I am not 100% sure. Does anyone know where I can order annother one of these? Thanks
10-26-08 | 10:27 AM
#3
surly old man
Joined: Sep 2006
Posts: 3,393
Likes: 44
From: Carlisle, PA
Bikes: IRO Mark V, Karate Monkey half fat, Trek 620 IGH, Cannondale 26/24 MTB, Amp Research B3, and more.
You snapped an axle? You mean the spindle itself? You are a gorrilla, sir.
Sorry, I cannot directly help with the problem. If it is Italian threaded, it will take more leg-work to find a new BB, but not so hard. Don't give up on it.
By the way, can you just replace the spindle and not the cups themselves? That will open up many other options for replacement.
jim
Sorry, I cannot directly help with the problem. If it is Italian threaded, it will take more leg-work to find a new BB, but not so hard. Don't give up on it.
By the way, can you just replace the spindle and not the cups themselves? That will open up many other options for replacement.
jim
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Cross Check Nexus7, IRO Mark V, Trek 620 Nexus7, Karate Monkey half fat, IRO Model 19 fixed, Amp Research B3, Surly 1x1 half fat fixed, and more...
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SB forever
Cross Check Nexus7, IRO Mark V, Trek 620 Nexus7, Karate Monkey half fat, IRO Model 19 fixed, Amp Research B3, Surly 1x1 half fat fixed, and more...
--------------------------
SB forever
10-26-08 | 10:31 AM
#4
Member
Joined: Jul 2008
Posts: 24
Likes: 0
From: Denver
Bikes: 05 Haro F2, Two, Haro backtrails X2, daimond back viper, Dk eight pack.
You would think itd just be the spindle, But if he snapped the spindle, and it smacked the cup, it couldve cracked the cup, I dought it, but its a possablyity.
10-26-08 | 11:37 AM
#5
Always find my way home
Joined: Dec 2005
Posts: 190
Likes: 0
From: Kankakee, IL
Bikes: Madone, 8500
Not familiar with that bike but the BB you described is a sealed unit, negating the possibilinot ty of just a new spindle(axle, as you called it). There are other numbers on the label of the old BB shell that tell you the size/thread you need for the replacement. There should a number like 73x118, 73 the BB shell width and 118 is the spindle length. If the first number is 68 or 73 the shell is English thread- 70 is Italian. If the shell label is covered in rust these details should be visible. If in doubt, measure the shell and spindle w/ a caliper.
