spiral transition curves

mascur Oct 30, 2000

  1. mascur

    mascur New Member

    1
    0
    17
    Does anyone have formulas for calculating spiral transition curves?

    Mason
     
  2. watash

    watash Passed away March 7, 2010 TrainBoard Supporter In Memoriam

    4,827
    12
    64
    I will have to unpack my surveyor's books, but will find that for you.

    ------------------
    Watash
     
  3. Alan

    Alan Staff Member TrainBoard Supporter

    10,793
    396
    124
  4. watash

    watash Passed away March 7, 2010 TrainBoard Supporter In Memoriam

    4,827
    12
    64
    Alan, a spiral curve going up hill or down hill, like a helix. In the real world these usually coiled around a mountain, so reached their tightest curve radii near the top. To conserve space, a helix is used on scale layouts which is more like the threads on a bolt, all the same radii all the way up, or down. There is a formula for right and or left, I have it, but have to wait to post it, because I had to scan it.

    [​IMG]



    [This message has been edited by watash (edited 06 November 2000).]
     

Share This Page