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Removing the Cups from Hub

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Removing the Cups from Hub

Old 03-13-09, 05:16 PM
  #1  
sooprvylyn
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Removing the Cups from Hub

Hello,
I am wondering if anyone has ever removed the steel cups from an aluminum hub before? If so what did you use? Did you manage to get them back in, and if so what did you use?

Thanks
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Old 03-13-09, 05:29 PM
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Some of Campy's older hubs had replacable races which were available as repair parts. I don't know if the current ones still do. AFAIK, Shimano hubs never had replacable races, just cones.
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Old 03-14-09, 05:00 AM
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If the cones & ball bearing need replacing, where could they be purchased?
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Old 03-14-09, 07:11 AM
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Originally Posted by deweyhtucker View Post
If the cones & ball bearing need replacing, where could they be purchased?
Any bike shop will either stock replacement cones or can order the proper ones for you. They also stock loose bearing balls in the needed size. Bearing balls are also available in bags of 25 or 100 from any bearing or industrial supply shop. Be sure to specify "Grade 25" balls.

There are two very good mail-order/internet-order places, Bike Tools Etc. (www.biketoolsetc.com) and The Third Hand/Loose Screws (www.thethirdhand.com), that specialize in bike parts and tools. They will certainly have the bearing balls and have a selection of cones.
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Old 03-14-09, 07:40 AM
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Replacing the races is tyically not worth it unless it is a campy hub where there are available replacements. Yes you can do it with shimano hubs, but it requires another donor hub. Essentially, you take a punch from the other side of the hub and pound it out.
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Old 03-14-09, 07:52 AM
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Originally Posted by nitropowered View Post
Yes you can do it with shimano hubs, but it requires another donor hub. Essentially, you take a punch from the other side of the hub and pound it out.
What's the condition of the "donor" race after you pound it out? Does it pop out with no harm or is it distorted?
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Old 03-15-09, 08:32 AM
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HillRider - Thanks for the great links.
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Old 03-15-09, 09:55 AM
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Originally Posted by HillRider View Post
What's the condition of the "donor" race after you pound it out? Does it pop out with no harm or is it distorted?
Those shimano races are really thick and tough. They usually come out unharmed.

But since you are replacing a race on a $5 hub using another $5 hub, I don't really think it matters.
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Old 03-15-09, 10:56 AM
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Originally Posted by nitropowered View Post
Those shimano races are really thick and tough. They usually come out unharmed.
Nice to know they can be salvaged. However, I've never had a Shimano hub where the cup was damaged. I've replaced cones and, of course, bearing balls but the cups always seem to go on forever.
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