i found this recently. quite a monster. the video might not work for dial up.
http://www.youtube.com/watch?v=1RJfnk2S330&feature=PlayList&p=DC726C6194912B16&playnext=1&playnext_from=PL&index=104
the below should be ok for dial up.
walther's has a ho scale model.
http://www.walthers.com/exec/productinfo/933-2966
imagine a ho layout with three of these like the video
http://en.wikipedia.org/wiki/Hulett
lex