Saturday, July 23, 2011

Ode to the Bearing



Behind the scenes bicycle enabler

Cyclists don't always give ball bearings the credit they deserve. I say that because it's possible to alter many of the pieces and parts that make up a bicycle, different frame materials, different configurations, carbon fiber this, suspension or not, three wheels, one wheel, recumbent, increased bottom bracket stiffness, and so on, but there's one essential component which makes the high efficiency rolling machine possible: the ball bearing. Or at least, the bearing, since there are variations used in some parts because we can't seem to leave well enough alone out of a belief that ceramic needle bearings (I don't know if they actually exist) would yield .001% less friction on the drive-side or something. Not that there isn't oneupmanship with ball bearings themselves: once you find out that there's a grading system, and Grade 25 is possibly better and very attainable, you're headed down a slippery slope. Or at least, spinning around a slippery race. 

Ball bearings: I love them. Keep them happily gooped up with grease and relatively clean, and they last a long time on a bicycle, performing their critical supporting role. This one is from the FLC project headset, before careful cleaning. Cages, or free? Hmmm.

6 comments:

  1. A very worthy post! And yes, ball bearings last a LONG time. Only this week, after 20 years of service, did I need the bearings in my Trek's front wheel replaced. Good job, bearings!

    ReplyDelete
  2. Bearing a bear of a job, it takes balls.
    Or something.

    ReplyDelete
  3. Oh, cages, definitely, JRA.

    Ya don't wanna wind up losing any of your balls.

    ReplyDelete
  4. I like races - they save time.

    ReplyDelete
  5. I'm a big fan of the humble ball bearing as well.Loose?Absolutely, because you get twice as many of them and half the wear and tear.

    cheers,

    ian
    Melbourne

    ReplyDelete
  6. Bearings are generally out of sight and little considered. As such, I don't think about them much, and other than what I have mentioned here, don't know much more about them, really. This ignorance makes me possible prey for nonsensical marketing ploys, as well as cheapening schemes in the guise of innovation. I notice that Dura Ace still uses cone and race, free balls. That is something I would like to understand better.

    ReplyDelete

Please feel free to comment here, almost anything goes, except for obvious spam or blatantly illegal or objectionable material. Spammers may be subject to public ridicule, scorn, or outright shaming, and the companies represented in spam shall earn disrepute and ire for each occurrence.