bachmann gp 30 down hill speed

[odd]

I have a Bachmann GP 30  that want s to run away going down a 4%  grade. Does it even when no cars are attached.
My other locomotives seem to do it. I am using a Bachmann dcc system. none of the of the others contolled by this seem to runaway.
Any ideas on how to control it better?
Thanks

[Jim Banner]

GP 30  ... want s to run away going down a 4%  grade ... My other locomotives seem to do it... none of the of the others contolled by this seem to runaway.

I am confused.  Are you saying your GP30 and your other locomotives run away going down your 4% grade but only the GP30 runs away when you use a Bachmann DCC system? 

If so, we need some more information:
- which Bachmann DCC system are you using?
- what do you use to run your trains when they ALL run away?
- do all your locomotives have decoders in them?

I hope you will reread your original post to see why I am confused and then post again to unconfuse me.

Jim