01-08-2009, 05:09 PM
I am guessing, with the small wheel size inherent in this design, that most switches and crossings where these are operated have "swing-nose" or movable frogs. It would seem otherwise the traverse of the open part of the frog could be problematic at some speeds ? Or not. Bob C :?
James Thurber - "It is better to know some of the questions than all of the answers."