I’m getting frustrated with my spline roadbed I built for my elevated layout.
I don’t know what I’m doing wrong but I’m ready to rip it all out for the 4th time and rebuild with the track attached to a solid piece of PVC or wood.
Here’s my spline. PVC strips with pressure treated 2x2 pieces spaced every few feet. The PT pieces are then screwed down to my benchwork and leveled crosswise. Everything is then backfilled with sand( this might be my issue right here?). The track is then placed on top and allowed to float as recommended. Every 6’ or so i screw down a few hand spiked ties with a washer and a screw driven into the PT spacers. In a few places I’ve directly pin nailed the ties to the spacers ( seems to work slightly better). Every single place that’s in direct sunlight I get massive vertical movement and track gaps as the track moves. Other places in direct sunlight seem just fine and don’t have nearly as much vertical movement. A section along my fence line I’ve had to rebuild 3 times ( every summer) and then once winter hits it’s all screwed up again.
What the heck am I doing wrong? I know this method has been proven over and over again.
Is the fact that I’m handlaid the track and the ties are are “independent” of each other playing a role in this?
Or the use of sand?
I’m getting frustrated every single year around this time when I want to start running trains again and the track is messed up so bad and I spend a month or two rebuilding.
Some sections that I never added sand to over the summer are just fine.
Should I secure the track in more places? Or let it all just float? I’ve had 1 summer of each method and neither one seems to work.