Cant deficiency diagrams

Published on 2026-06-27 by Admin

Vector graphics (SVG) files are in the archive.org item.

Cant deficiency is one of the static legal limits limiting train curving speeds. I made some improvements and drew some geometric relationships based on the original cant deficiency diagram used on Wikipedia's cant deficiency article. Original: https://commons.wikimedia.org/wiki/File:Cant_deficiency.svg

Diagrams:
(1) Vector components for track/superelevation and centrifugal force on a curve in underbalance (deficiency) condition
(2) Track/superelevation and centrifugal forces from diagram #1 overlapped with angle relationships
(3) Vector components of underbalance and balance condition and relationship to cant deficiency (additional superelevation of track required to balance train)

Tags: trains, railroad, cant deficiency, underbalance, engineering
Copyright: CC BY-SA 4.0 Attribution-ShareAlike 4.0 International Creative Commons License; Remix of "File:Cant deficiency.svg" (User:Z22) licensed under CC BY 4.0 via Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Cant_deficiency.svg (see file link for download and full license information)
Files: whirledtc-cant-deficiency-diagrams
Flickr links: Album, diagram #1, diagram #2, diagram #3


Cant_deficiency_1_track.svg Cant_deficiency_2_superimposed_underbalance.svg Cant_deficiency_3_superimposed_balance.svg