Radii  were provided with the Bachmann Cavalier Spectrum.  So I don't think it is that. My coal car appears to attached to the steam engine. I have placed weight on the coal car and have achieved some measure of success but don,t breath or expect more than one lap without a derailment.  I just don't see how this could possibly be set up on a carpet. Unless there is something wrong with my train.
I have inspected every inch of the track and soldered the joints thinking that that would help and it did  help but still not good. HELP!! I am loosing patience and interest and I am bare getting started on my railroad town.

I am new to model railroading and am having trouble keeping my train on the track. It seems that my coal car is  the culprit. It seems to leave the track first. Is there any way to adjust the track pressure on the car? I am puzzled because this train is for ages 12 and up and I am much older than that. The track is layed out on a 4 x 8 table on a solid 1 inch styrofoam base.