This question got my curiosity going. As luck would have it, I had some 031 track I was fooling with and the LC +2.0 was sitting on a nearby shelf. I plan to run mine on 042 and 054 but here are some shots of what it looks like on 031. This was hand placed and was not running. I was surprised at the swing of the back end... about 2-2.5" -but it makes sense when you see where the back drive truck is located, otherwise, the pictures show one inch is a good estimate for other BB areas and depending on where your wall is located.
