It could be a wiring error, but you can make a quick test of the supply.
Disconnect the wires at one of the two switch machines. Puch the controller button. If the remaining switch throws normally, disconnect it and reconnect the other. Repeat test.
If each throws independently then it is likely that the power supply cannot supply sufficient current for the two at once. Don't despair! Search for posts on capacitor discharge or capacitive discharge supplies.
If neither switch throws independently then perhaps you can post a wiring diagram here.
Two trains at once is a milestone. Enjoy it! I am up to four (on DC) but if I look away for a milli-second, one will crash - often into the rear of another.
Good luck.
Karl
The mind is like a parachute. It works better when it's open. www.stremy.net
Good evening gents! I am having some good progress on my wiring this evening. I have been wiring up my switches, got two trains running at once(no big deal for many of you but for this beginner it was pretty exciting), and so forth.
I ran into a problem when the layout plans called for the connection of two switches to one switch controller. For those of you who want to see exactly what I am talking about you can refer to the atlas up and over dogbone layout and see switches #3. In this case I ran both the 3N's together and then into the switch control, same for the r's and the common. You get the point. When I test the switch controller, both switches respond slightly but don't actually throw the bar(it is not getting hung up on cork or anything). BTW, I am using a separate power source for switches so I am guessing it is a pretty isolated problem probably relating to the reverse loop issue where these switches are located.
Can anyone help in very simple terms? Am I on the right track - no pun intended?
Thanks!