Well,
Since I could not find any extensions for the Bachmann log cars I decided to make it myself. I ended up sacrificing one of my log cars to make the extension. I did not totally loose it it just will remain the original length once i place extension back together.
I Original car is scale at 18’ at 1:20.3 scale. With the new extension it would move to 24’ in length. I took the original car and marked off a 6 scale foot section. I used my Microlux table saw to remove the section. I then cut a piece of basswood to the correct size and length . I glued the bachmann piece together and then installed to new wooden extension.