headtube and stem

dragon-1982
dragon-1982 Posts: 5
edited September 2008 in MTB beginners
could some one explain to me what 1.5" and 1.1/8" means on the stem description i assume its something to do with the width of the steering tube size if so how do you measure properly any answers would be most appreciated thanks.

Comments

  • nicklouse
    nicklouse Posts: 50,675
    it is the diameter of the steerer tube of the fork.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • whats the proper way to measure stem and fork
  • nicklouse
    nicklouse Posts: 50,675
    the way you measure a diameter, across the circle.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • do you measure from the outside of the headtube and fork, i know these are simple questions but i just wont to get it spot on as the parts im wanting to get are not very cheap cheers.
  • nicklouse
    nicklouse Posts: 50,675
    it depends on what you are wanting to measure.

    for the steerer it is the out side while it is the inside for the stem.

    bars outside/ stem inside.

    seat post out side/ seat tube inside.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • thanks mate most helpful