That first one you linked to (the WAGR X class diesel) I mentioned in an earlier thread here: http://forums.auran.com/trainz/showthread.php?t=17796&page=28 . But yeah, it's a weird one all right. (And apparently it was based on the infamous BR 'Type 2' Co-Bo as well - because the WAGR needed the class to run on really light track however, Metro Vickers changed the wheel arrangement to a 2-Do-2 arrangement, and the rest is history. ) Here's a fairly recent image I took of one of the operable preserved units of the class (XA 1402) showing her bizzare wheel arrangement: http://i581.photobucket.com/albums/ss258/Enkidoh_Roux/Picture012.jpg . Strange things to be sure, but I still like them nonetheless.