Hey Guys
I took mine home yesterday and gave them "the test"
On Atlas code 55 track, they went through #4's with no problems.
The trip pins do hang low, just like the RC Autoracks.
I had one car that got stuck on a frog, but it was an easy fix.
I pulled them in the front of a 50 car train and had no derailments.
So I'd say that the weight is fine on the car.
These cars rock, and I can't wait for more.
Thanx
Rob