Need Help; Three rail power supply?

yogy,

You need command control of some kind (DCS, TMCC, etc). What you're doing is wrong, wrong, wrong! Yes it can be done....but not the way you're going about it!!!! Unplug everything and find a pro for help...Do yourself a favor (and your trains)

We have some forum members from down-under. Maybe Dave will chime in here.

yogi,

One of our forum sponsors is "The O-Gauge Guy". His banner reads,"Australia's O-Gauge Train Specialist". If you click on his banner you should be able to chat. I wish I could help.

How's anyone to reach you off forum for example? You need to put your email in your profile...just a suggestion.

Sounds like your two transformers are out of phase.

command control not needed

ed

Vogy, what is an Mtz controller?  Without more information I'm not sure what the source of the problem might be, but have you checked the way your controllers are plugged into the mains (or AC power receptacles) in your house?  You might try reversing the way one of the plugs is plugged in, if it is possible. (Here in the US we have both polarized and non-polarized two-prong plugs.  Additionally three-prong plugs with a ground are always polarized.  Polarized plugs cannot be reversed.) 

Pappy, I don't understand your statement that command control is required.  Block and cab control have been done with conventional control for much longer than the amount of time command control has been around.

Okay, so if I understand this correctly, you have one power brick feeding three speed controllers and that is a problem.  Even if everything is in phase (no reverse polarity), you will get a jump in the voltage when the train is crossing from the track controlled by one controller to another (it is unavoidable  - some of the wheels and power pick-ups will be on one section and one on another).  If everything is not in phase (there is reversed polarity) you will get short circuits because you are connecting one side of the power brick's output to the other.  Either way, the simplest solution is to use separate power bricks for each controller and make sure everything is in phase  from the plug in the outlet to the wires to the tracks.  You also might want to consider cab control where you basically keep each train or locomotive connected to the some power source and controller.  "How to wire your model railroad" by Linn Westcott (Kalmbach) covers cab wiring in detail and is available from Amazon in the US for as low as $3.50.  Basically with two controllers, you can use double throw switches and just keep switching the blocks on ahead of the train before it enters each block and switching them off after it leaves.   

What the hel% is an MTZ controller?Get a legacy system or a normal conventional system.Do it right.Nick