FYI: I am still making parts for the Ugly Loco 7-1/2 in. gauge. I wish I had chosen a smaller scale/gauge at the beginning as this darn thing is getting HEAVY!! Al Messy in Ashland City, TN Al, Pour some alum water on the ugly loco and see if it will shrink down to where you and Harry Wade can think about building that 3-1/2" track. Jesse in Troy TN. (Should have stayed with "N" scale. MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.