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Hub cup wear - how much is too much?

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Hub cup wear - how much is too much?

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Old 06-22-15, 01:34 PM
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Hub cup wear - how much is too much?

I'm in the process of overhauling my early 80's Lotus Odyssey, and discovered some minor wear in the hub cups (both front and rear):



I know Saint Sheldon recommended replacement of cup or cone if there is any sign of a flaw, but I'm wondering if this is the widely accepted rule - especially when dealing with vintage kit that isn't so easy to replace?
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Old 06-22-15, 02:01 PM
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I have a friend who is a bike mechanic, and as she refers to herself very "OCD". She would tell you to change those out absolutely. I would say put lots of grease, new ball bearings and get it adjusted perfectly. Keep an eye on it after that.

Go ride and have fun.
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Old 06-22-15, 02:13 PM
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They're bad and will only get worse. Try polishing them with a Dremel fist.
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Old 06-22-15, 02:49 PM
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Originally Posted by Velocivixen
I have a friend who is a bike mechanic, and as she refers to herself very "OCD". She would tell you to change those out absolutely. I would say put lots of grease, new ball bearings and get it adjusted perfectly. Keep an eye on it after that.

Go ride and have fun.
Exactly my thoughts and would not hesitate to reservice and use.
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Old 06-22-15, 03:07 PM
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You can regrease and reuse, but when you adjust the cones - you will feel it. You won't get them adjusted "perfectly". Time to keep a lookout for new cups.
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Old 06-22-15, 03:35 PM
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It looks like the hard chrome surface of the race had flaked off in some areas. That means the bearings will be rolling on the softer metal that used to be under the hard chrome finish. It might last some more miles, as such, but the wear on the cup will accelerate exponentially as more of the chrome flakes/wears off, so be ready to change out the cup race and cone (always do such as a set) more sooner than later......
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Old 06-22-15, 06:18 PM
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Originally Posted by Velocivixen
I have a friend who is a bike mechanic, and as she refers to herself very "OCD". She would tell you to change those out absolutely. I would say put lots of grease, new ball bearings and get it adjusted perfectly. Keep an eye on it after that.

Go ride and have fun.
Originally Posted by OldsCOOL
Exactly my thoughts and would not hesitate to reservice and use.
Thanks for the advice. I may just do this, since I suppose I'll be right where I started at the end of the day - needing to replace the cups and cones anyway.

Originally Posted by miamijim
They're bad and will only get worse. Try polishing them with a Dremel fist.
I'll give this a try, although I suspect the issue is as described by Chombi...

Originally Posted by Chombi
It looks like the hard chrome surface of the race had flaked off in some areas. That means the bearings will be rolling on the softer metal that used to be under the hard chrome finish. It might last some more miles, as such, but the wear on the cup will accelerate exponentially as more of the chrome flakes/wears off, so be ready to change out the cup race and cone (always do such as a set) more sooner than later......
Originally Posted by Ex Pres
You can regrease and reuse, but when you adjust the cones - you will feel it. You won't get them adjusted "perfectly". Time to keep a lookout for new cups.
I didn't realize it's possible to get new cups, separate from hubs. Is replacing the cups relatively straightforward? (These are Sunshine Pro Am hubs, for reference.)
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Old 06-22-15, 07:53 PM
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Originally Posted by Mainah
I'll give this a try, although I suspect the issue is as described by Chombi...
Use small felt attachment on the Dremel with some type of polishing compound. If it goes away your good to go but....Chombi is right, if its through the hardened surface they're toast.
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Old 06-22-15, 08:05 PM
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Originally Posted by miamijim
Use small felt attachment on the Dremel with some type of polishing compound. If it goes away your good to go but....Chombi is right, if its through the hardened surface they're toast.
Ok cool -- I'll give this a try tomorrow. Thanks!
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