I'm sure someone has run in to this problem many times before but I haven't been able to find any other threads on the issue. What I need to do is span 3ft but with no pillars, pylons, etc. I also only have 1/2in on the underside of the track to do it with. This will be supporting a legacy Big Boy so, of course, it's also heavier than most. I had hoped that there might be a miniature I-beam manufacturer but they all seem to be ABS plastic, not metal. I think a threaded steal rod might be the next best bet but again, I fear it will flex too much.
Anyone have any thoughts or suggestions?
