The above designs for a rolling road work well for the smaller, lighter moðlels where the loco can be lifted on̈ to and off the rollers but present problems with the larger units. What I am looking for is a design of rolling road which would allow the loco to be pushed onto the rollers via a length of transfer track without any need for lifting. I fear however any such design would be quite complicated to make up. Interested however to see what might be out there.