Been awhile since you've been on a train Whistlenut? This isn't the North Conway Scenic Railroad, they replaced jointed rail with ribbon-rail 20 years ago (technically it is called CWR, or Continuously Welded Rail, but for railroaders it is ribbon rail, but then again we know jointed rail is 39 feet and not 40 feet too!)
. I think you will find the ride to be much smoother now then back in the day in any case.
You are right on the pitch and rolling though. We used to travel up the tracks around 10 mph in work mode, and when I sat down in the brakemans seat, within 5 minutes I was sleeping. That is not good when you are the Railroad Safety Coordinator, but for anyone, it was impossible NOT to sleep with the side to side motion.
It was so sleep inducing that when my first daughter was born, I decided to build her a cradle in the shape of a locomotive. It had rockers that rolled her side to side, and was dovetailed together except for the drawers where the air brake assembly and batteries were located, that was "lovetailed" which is like dovetails except they were in the shape of hearts. Along with the battery and air brake drawers, I made it so the fuel tank opened up, the dog house opened up as well and the radiator also contained a spot to store stuff. At age 6 she uses the cradle as a toy box, but still came out good.
I always said if I had a boy I was going to build a bulldozer cradle, but since we are having another girl (4th) I lost all interest.