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When is 3/16 actually 1/8?

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When is 3/16 actually 1/8?

Old 10-23-16, 02:41 PM
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When is 3/16 actually 1/8?

Building my nutty Italian, I had a bad set of Campy Athena headset bearings and went shopping for a new set.

I bought "HS-HD110 3/16 bearing balls" and waited with bated breath! Well this showed up, the bearings are 1/8.

I thought, no problem, mis-packaged! Well every other picture of these looks exactly the same from other vendors.

From the pics you can see my old bearing is huge by comparison. It measures 3/16!, the replacements are 1/8.

So I am wondering what the 3/16 measurement on the package is referring too? Thanks
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Old 10-23-16, 02:44 PM
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Good Luck .. another Campag problem when you choose to use their Parts .
Headsets? I dont need no stinkin retainers..
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Old 10-23-16, 04:50 PM
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Are you sure they're 1/8" and not 5/32"? 5/32" is a fairly common size for headset balls; BITD Campagnolo road headsets used 3/16" balls while the track headsets used 5/32" balls. And many Japanese and French headsets also used 5/32" balls.
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Old 10-23-16, 06:52 PM
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Or perhaps another example of first garbage in and always garbage out after? It's pretty common to cut and paste visuals (and data) on line these days. Few suppliers actually do their own photo and editing. Andy.
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Old 10-23-16, 07:14 PM
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I can't speak to the specifics, but I wonder if this is a generational issue.

Campy likes to recycle names, and it's possible that your Athena headset has absolutely nothing in common with current ones except the name. So, you're getting balls for the current version, not yours.

Buy the loose balls in the size you need by dimension, not model fit, and you'll be fine. Just hand pack the loose balls the same way most of us do anyway (many even believe loose is better, but let's not open that can of worms).

As for the label, simply someone not tracking when changes were made. Wouldn't be the first time, won't be the last.

Anyway, as I said, I can't speak to exactly what happened, this is just one possibility.
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