Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10 beta 3/9/83; site nbs-amrf.UUCP Path: utzoo!watmath!clyde!burl!ulysses!harpo!seismo!rlgvax!cvl!umcp-cs!nbs-amrf!libes From: libes@nbs-amrf.UUCP Newsgroups: net.bicycle Subject: sealed bearings Message-ID: <193@nbs-amrf.UUCP> Date: Wed, 22-Feb-84 07:46:31 EST Article-I.D.: nbs-amrf.193 Posted: Wed Feb 22 07:46:31 1984 Date-Received: Thu, 23-Feb-84 05:34:31 EST Organization: National Bureau of Standards Lines: 17 I'm considering several bikes, some of which have sealed bearings, some of which don't. I would like to hear people's stories on sealed bearing and also the answers to some questions, which I have never heard (probably because sealed bearings are relatively new): How long do sealed bearings last? How do you know when they need to be replaced? Do they suddenly freeze or do they slowly go bad like unsealed bearings? Are they inordinately expensive to replace when the time comes? I've seen most sealed bearings on hubs, but I've also seen them on headsets, rear derailleurs and bottom brackets. Do they really make sense in all these places or is this just gimmickry? Are they a compromise? Do they not work as well as carefully adjusted unsealed bearings? Thanks for all replies. Don Libes [allegra!seismo]!umcp-cs!nbs-amrf!libes