Track making/making tracks: the good, the bad and the ugly, advice and thoughts wanted, explanation is giving(incl mistakes)

Greg Elmassian

Greg Elmassian

8 Mar 2014
San Diego
It is considered flange bearing if the INTENT is that the flange of the wheel rides in the bottom of the flangeway.

Yes, indeed, it clearly depends on the wheel flange.

If you study mainline/prototype switches, you will see that flange bearing frogs are common, but they rely on a consistent flange depth.

Our hobby has anything BUT consistent flange depths.

Now, if you "control" your environment and have all flanges the same depth, matched to flange bearing frogs, then it actually works very well, as there are indeed substantial benefits to a flange bearing frog.

But, my main point is that for those of us have rolling stock with widely varying flange depths, flange bearing frogs are not a good solution.

Again, the classification of a frog being flange bearing or not flange bearing is by design of the frog, and makes assumptions of the flange depth of the wheels running through it.

The classification of a frog changing because you use different wheels, some may ride in the bottom of the flangeway and some not is not correct... I get your point you could define things from how they operate, given different "inputs", but there is more to the frog geometry than flangeway depth, MUCH more....

justme igor

justme igor

17 Apr 2020
Netherlands Westwoud
A Lot of good info, hints tips and links....please don't think i am ungrateful cous i did not reply.
There is a lot of stuff to learn and to do!
This is not a project that holds one item....
I will get back to the turn out this week....
There are some solutions and changes made, please wait to you see the next result.
Thanks for sharing all the info! All of it.