I am currently running my old (1952) Lionel train in the UK. Tennents Trains here in the UK supplied me with a custom made step down transformer that has an 18 volt AC output to operate with an MTH RailKing controller. I had previously purchased a step down transformer to operate some of my US power tools. They seem to do fine on 50 Hz ouput of the stepdown ( UK power is 240 volt, 50 Hz). Why couldn't I just plug my standard Lionel controller into the 120 volt outlet on the stepdown tansformer? Would the 50 Hz power cause problems with the motor in my old train?