John, are you vying for my ‘Curmudgeion’ moniker?
Althoug I don’t necessarily disagree with the gist of John’s reply I think it could have been stated a bit more tactfully. From personal knowledge the type of layout you are describing will require a bunch of upkeep. Depending on how many hours per day you plan to operate.
Also keep something in mind, these are ‘toys’, regardless of what we think of them as. They are NOT engineered to be commercial operation items, operated for long periods on a daily basis. I looked at a local childrens museum that had a layout around the ceiling that only ran on weekends for a few hours. They were experiencing frequent derailments in corners. Reason: the inside head of the outer rail on every curve (R1 curves) waw heavily worn so the gauge was way out. Solution: replace all the curves. Secondary reason, all the wheels were worn to where the flanges would darn near cut your fingers. End soluition, not put back in service.
What you are proposing is doabe, but will require, as John stated, very regular maintenance. It would be good policy to have several locomotives so that a routing maintenance schedule could be adhered to. The trucks on the rolling stock is an ABS or other plastic. Even well lubricated, the steel axles are harder and the trucks will eventually wear out and fail. Another maintenance issue to be aware of.
You spoke of using battery power. The disadvantage of battery power for what you are proposing is run time. Depending on the locomotive/battery/and control package, combined with the layout (flat vs with grades up and down), runtime for each locomotive will vayr and therefore you will need a person to monitor so you don’t have a train parked somewhere along the mainline due to a dead battery.
Comments on small children and curious fingers in well placed. I would recommend a minimum 2-3 foot buffer to keep equipment a safe distance from inquisitive fingers.
Although I personally don’t like it, for trouble free operation the elimination of ballast is a good idea. No ballast eliminates ballast migrating into switch points and other places it is not desired. Track laid on a solid level foundation will give trouble free service. I also recommend using code 332 rail in this application. Although the most expensive, Stainless Steel rail is also the most durable.
It can be done Mark, but I think what most of us are saying is ‘Go into this with eyes wide open.’ Keep asking questions, we will keep answering to the best of our ability.