Went to the store yesterday, and got a book on basic wiring. I won't need it for the near future, but a few months.

Anyway, I also got some flex track to do the train around the tree gig, and I also went to Atlas' website and downloaded their track planner utility.

My question (after a bit of rambling) is what is the tightest radius that an N gauge train can handle? I've come up with some interesting layouts, but I know that some of them the train won't take the curve, but I don't know the tightest curve it CAN take.

My current stock: 12 5" straight sections, two 5" rerailers, 4 pieces flex track, all Atlas type 80 N gauge.

Also, if I scratch build (I've been a rocket and other balsa modeler for years) a trestle set for a figure 8 type loop, what is the steepest or best recommended incline that an N gauge can take? I don't know the specific engine, but it comes out of a recent (~2 years) bachmann EZ track system complete set. 1 engine, 4 cars, and I got a couple cars as a supplement gift, and I just purchased 5 more off ebay. (Yeah, this hobby isn't addicting!)

Thanks, and additional thanks for putting up with n00b questions!

John