I am running two trains with an old ZW. One train on a continuous outer loop on an 8x9 table and the 2nd train running on a reverse Y layout within the outer loop. Initially, the trains or lone engines, would slow substantially when the whistle switch was pushed so I replaced the whistle switch rectifiers with modern diodes. Slowing issue resolved.
Now, engines on the outer loop behave 'normally' without slowing at all or speeding up when the whistle switch is pushed BUT oddly enough the train/engines on the inner layout now SPEED up an whistle when the whistle switch is pushed! And this occurs even while running the inner track by itself without the outer rail being run.
A friend and I though it might be due to a voltage drop since the inside layout contains MUCH more track (at least 60 feet worth) and three switches, so I upgraded all the wires to a thicker gauge - 10 gauge bus/loop around the perimeter of the inside layout with several drops attached to it.
Mind you, there is no issue running the same transformer channel on the outside loop, with same engine.
What in the world am I missing here? As I mentioned, it can't be anything with the transformer as process of elimination has ruled that out.
Here's a video of the layout if it helps: https://www.youtube.com/watch?v=O-eZW-t3MqI
Please keep in mind that both channels ran the both engines SLOWER before I replaced the rectifiers with diodes.
Thanks - Ponz
