09-18-2009, 08:45 AM
Rob,
I've noticed this movement when setting up temporary loops of track on the basement carpet for my kids. You might be able to model the movement by using a "less supportive" roadbed (like carpet) for a longish section of track (say one length of flex). Drill out the holes in the ties a little larger and loosely secure with track nails to allow up and down movement, but not side to side.
A certain amount of movement is normal (kind of like flex in airplane wings). The rails would have to be immensely strong - and therefore larger and more expensive - if there was to be no movement at all.
Andrew
I've noticed this movement when setting up temporary loops of track on the basement carpet for my kids. You might be able to model the movement by using a "less supportive" roadbed (like carpet) for a longish section of track (say one length of flex). Drill out the holes in the ties a little larger and loosely secure with track nails to allow up and down movement, but not side to side.
A certain amount of movement is normal (kind of like flex in airplane wings). The rails would have to be immensely strong - and therefore larger and more expensive - if there was to be no movement at all.
Andrew