Here is my problem. I have a large layout that has the main line wired in 12 blocks that are controlled by relays to cut off power in the block behind a train so they don't catch up with each other. At present I run five trains on the main line. All the engines are wired to go forward automatically when power comes on again. I use MTH, Lionel and Williams engines. Each engine has a rectifier installed to control the direction of travel since the second engine in a set is actually running backwards. I bypass or eliminated all electronic control systems. Each block has it's own transformer set at the appropriate speed for that block so no train is effected by the stop or start of another. So far so good. The problem arises when sets of engines run at different speeds with each transformer set at a certain power level. Most diesels run pretty much at the same speed except for Williams which seem to run faster. I double head them to slow them down a bit. When I run steamers they use a lot more power and if I crank up the transformers to run the steamers the diesels go at 150 mph!!! I'd like to rum both steam and diesel at the same time and not have to exchange them and change all the transformer settings each time.
Here is the real question: If I wire the dual motors in the diesels in series instead of in parallel will that slow them down and but will that hurt the windings in the motors???
Does anybody have an answer???
