My new EM1 keeps derailing - it seems to be the drawbar going into 22 radius curves.
wvwoodman,
I found I had to put a very, very tiny bend in the drawbar to prevent it from lifting the tender on a curve. Tolerances are tight, and that drawbar is very long. Also, make sure the drawbar clears the trailing truck on a curve. The drawbar shape is critical on this locomotive. The tweaks required are tiny, so don't overdo it.
Regards,
Jonathan
My EM-1 would always derail and I found the cause in my case to be the two wiring harnesses were interfering with the draw bar and causing it to derail.
The wires were too long coming out of the tender and hung down too far.
It was only a problem in one direction, as when turning in the other direction, the draw bar just moved away from the wires.
I was able to shove the wires into the tender farther and made a sharp bend in the harness so the wires would ride above the draw bar, and that resolved my problem.