Cool Science

Discussion in 'Off Topic' started by Fabian, Oct 6, 2013.

  1. Fabian

    Fabian Well-Known Member

    Last edited by a moderator: Dec 15, 2015

  2. professor

    professor Active Member

    Great find Fabian. Real science. Tempered glass.
    Reminds me of when I tried to smash a ceramic ball bearing that I took out of a bearing. Placed it on my one inch thick "work table" and smacked it with a hammer.
    It bounced the hammer off.
    Hummm, next was the home made sledge hammer. I tried to make it strike as flat as possible> expecting to see a vapor of ceramic dust fly out from under the blow>
    No dust. The little white ball left a little divot in the steel top and the ball was fine.
    I gave up. Totally amazed.
  3. Fabian

    Fabian Well-Known Member

    Glad you have mentioned ceramic bearings because i would like to find a ceramic replacement bearing for the Sick Bike parts Heavy Duty Freewheel bearing. Things is that ceramic bearings are available with different types of chemistry, and i am not sure which is the optimal chemistry for this type of application?

    The bearing style is a 6708-2RS, and what are my options, aside from 52100 "Chrome Steel" for the shells and balls?