Thanks for all the imput. I am using 22 degree curves and have tried most of the solutions everyone has offered. This is the only engine I am having this problem with. I will try adding weight and shortening the spring. Any other suggestions would greatly appreciated.

I am having problems keeping this particular engine on the tracks. It is the only model I have that constantly derails. Any ideas that could solve this problem, would be appreciated,

In ho scale what is the standard width of a city street and the width of a country highway?

Can these be used using EZ command and reversing swiches on function 10 for analog engines?