Here's a demonstration in coupler pull...
We've got a Proto 2000 SD60M mated to a Walthers 89' Autorack. Couplers are Sergent EC87. The Autorack is weighted to NMRA specs, and has had its extra wide coupler swing boxes permanently centered (so they work like normal boxes). The radius is 22", on Life-like power lock track, resting on a 1/4" carpet base. The P2K coupler is about 1/16th of an inch too low, have not figured out if I'll try to raise it any.
Now for the review...
I've heard in the past that you can yank a truck off the tracks on 22" radius in some long car situations. I decided to test this today, since I was installing my latest batch of 10 EC87's. With the Sergent its darn near impossible to get a coupler to accidentally uncouple in tight situations, and it performed perfectly here. The weight of the Walthers car may have helped, I do not have one that has not been weighted, to test.
Though the P2K would not gain much speed due to the way they built it, it got up to around 20 scale miles per hour on full power from the Athearn DC power pack I have. Even with the way the BLI AC6000 picked the joints, neither the SD60M or the Walthers car derailed.
Very good performance, has anyone else tried this with kadee's?