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Bottom bracket frame tube question

Discussion in 'Bicycle Mechanics and Repairs' started by Night Train, 20 May 2008.

  1. Night Train

    Night Train Guest

    I have been digging around in my stores and rediscovered two raw and unused steel frame components, bottom bracket tubes, that I bought over 15 years ago during my last phase of bike building.

    They are 68mm long and 40mm outside diameter with a clock wise screw thread in one end and an anticlockwise screw thread in the other end.

    I know bike bits are sometimes timeless and other times changable and easily outdated so is what I have still standard fitment?

    Also am I remembering correctly that the anticlockwise thread is the left side?

    Thank you.
  2. Bokonon

    Bokonon Über Member

    Almost certainly going to be a British/ISO thread, which is as common as they get, so getting a suitable bottom bracket won't be a problem. Further details on bb's on www.sheldonbrown.com.
  3. OP
    Night Train

    Night Train Guest

    Thanks for that. It means I can use it as one of the fixed points for my design work.