Oct 30, 2000
Does anyone have formulas for calculating spiral transition curves?
I will have to unpack my surveyor's books, but will find that for you.
I don't even understand the question
The perfect combination - BNSF and N Scale!
Andersley Western Railroad
Alan's American Gallery
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.
[This message has been edited by watash (edited 06 November 2000).]