So, I put together my HO layout, and I'm a newbie to this, so bear with me... I find that pulling maybe 40 or so cars is a big problem. Not because the loco can't pull it, but because going around the turns, the "tug" of pulling all those cars tends to make them want to topple over to the INSIDE of the turn. What's rather funny (but not surprising I suppose, due to the forces involved) is that if you have plenty of speed, they are less likely to topple over. So this makes we wonder: Should the track be banked in the turns, to the OUTSIDE of the turn? (Which would be contrary to "common sense"). For those of you interested in seeing the layout in its very rough form now, I have a youtube video. It's really silly, but you can at least see the radiuses I am dealing with: youtube video