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I have a mid-sized 8x12 layout that can only realistically run one train at a time so I want to increase my engine capacity such that my grandsons can each run an engine simultaneously.   I don’t have room on my current layout for another loop so my only option is to go vertical and add a second level track.   Due to the size of the layout it doesn’t really make sense to have an incline to allow a train to climb to the second level, I’ve decided to make the upper level independent of the one below; the only way for one train to go from one level of track to the other would be to physically move it by hand.   I’ve decided to make the upper level a double track so I can run two trains above and one below.

I have a Legacy set up currently so my questions involve how to wire the new level.  Since I’m essentially running three separate layouts electrically, my initial thought was to buy two more transformers and wire each of the new tracks independently.  So how do I integrate my legacy base into the new layouts?  Is it as simple as adding a wire from each new layouts outside rail to the binding post of the command base?  Will that allow me to control three trains at once, each on a separate track?   Or do you phase the two new transformers together with my existing transformer and run feeder wires to the three separate tracks like they are one big layout and then run a single outside rail wire to the binding post?

If the three track loops had their negatives tied together at the binding post of the command post then they are now electrically connected (at least partially) so I would think that the latter scenario would be needed (or maybe you can’t do what I’m proposing).  Any guidance is greatly appreciated.

michael

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Michael-

Legacy can run the two loops together easily; just ensure each loop has a wire connected to the common post on the base.

In terms of power you can wire both loops to the same transformer, or use two different transformers. Two transformers would be needed if you have wish to operate conventional locomotives alongside the Legacy locomotives.

-John

michael……..no question is dumb. This is a common one as one’s railroad empire grows…

You MUST phase the transformers to use the same Legacy Base on all three loops.

Said a little differently, you must connect the common grounds in phase of all three transformers to be able to use the same command base.

I have two electrically isolated (due to isolation pins) independent loops powered by a ZWL and a phased and connected PostWar ZW for lights, switches and accessories. These switches and accessories are using the Legacy signal.

Here are pictures.

I have a Base3. It is connected to the ZWL common ground and the ZWL and ZW are phased and connected with this common ground.

IMG_4493IMG_4492

Hope this helps.

Peter

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thanks for the responses.

so for phasing the transformers...I've read a couple of write-ups on the forum and I see how to temp hook up two transformers and test them to see if they are in phase.   If they aren't in phase it seems the fix is to reverse the polarity of the wall plug.  So if I have all modern transformers with polarized plugs does that mean they are already phased properly?  if not, how do i reverse the polarity at the plug (since you can physically plug them in only one way) if they are indeed out of phase?



thanks

michael

@mrkerr35803 posted:
.  So if I have all modern transformers with polarized plugs does that mean they are already phased properly?  if not, how do i reverse the polarity at the plug (since you can physically plug them in only one way) if they are indeed out of phase?


thanks

michael

I wish that was true……but it is not.

What to do? There is a fix, but we will need the electrical gurus here for the answer. It is beyond my knowledge/skill base. That’s why I used a refurbished PostWar ZW for ancillaries……you can reverse the plug.

Peter

John

i have an mth 40-1000 now; i will probably go with new brick transformers for the new loops like the powerhouse.

So if you have a situation with a modern transformer that is out of phase and you need to reverse the plug, can you just file down the wide blade so that you can physically reverse it in the outlet?

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