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Old 05-26-12, 12:29 PM   #1
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hub question

what is this called and do I need one on the drive side of the hub,

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Old 05-26-12, 01:30 PM   #2
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Dust caps.

If it originally came with one, yes...

They do a minimal job of keeping dirt out....note the use of the word minimal.

4000+ wheels built since 1984...


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Old 05-26-12, 04:02 PM   #3
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They're called hub dust caps, and not readily available except for the most expensive hubs. If your hub is fairly common a local shop or bike coop might be able to find a used one in the "junk hubs" bin.

If it's a freewheel hub, it's less critical since the bearing is recessed fairly deep behind the freewheel. If you don't have one for the right side, you can improvise one with a piece of thin metal or rigid plastic cut out and trapped between the freewheel and hub.
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