> Either they shake loose or break under the loads of the
trains. SAL used them in industrial areas and on ballast deck bridges
back in the 1960's, but the screw fasteners would break and could not be
removed
>
...and, there seems to be a long history of
premature failure due to manufacturing issues.
It's kind of
interesting that they seem to be used on heavy freight trackage out west,
while they're much more prevalent on passenger lines in the east.
I was hoping for some concrete flex track before I finished the mainline
on my layout- it's a little too late now.
Stan Stokrocki
