@Devildog posted:Thank you. I guess it won’t work on my 42” radius layout that I have at home. I can run the MTH 18” cars on the layout and was looking for an Observation car to complete my passenger set. I found one but it is a 21” long car.
Are your curves 42" radius or 42" diameter?
42" radius = 84" diameter and a 21" car will certainly go around an O-84 curve.