I remember seeing the Lionel Culvert Twins back in the early 90's and thinking "WOW! I want those!" But they were big money for me then for a good pair in operating order. Then Lionel, LLC made the can-motored versions. I bought them. They were over engineered and underwhelming in the performance department. Eventually both units died. One died from a bad electric eye... the other was just too touchy in dropping the pipes.
Thanks to the bay, I just took delivery on two Post War units. One from Trainz and the other from a private seller.
Are they loud? Yup! Do they pick up and drop the pipes EVERY. SINGLE. TIME.? YUP! Sometimes the old ways are the best ways!
Jon