Skip to main content

My layout has two loops, an inner and and outer. A train can pass from the inner loop to the outer loop via either of two pairs of switches. The center rails are electrically isolated via fiber pins where the switches meet, so I can operate two conventional trains simultaneously.

 

Each loop has its own transformer, which I think are phased properly because nothing has blown up yet.

 

What is the proper way to traverse from one loop to the other? Ideally I would like the train to scoot across and continue on without disruption, but I am worried that having both transformers powered would cause some sort of problem in the moment when the pickup rollers are on opposite sides of the fiber pin.

 

Right now, I let the locomotive coast across the border until it loses power, power down the first transformer, then power up the other transformer. Of course, the locomotive then goes into neutral or reverses direction so there's a mad dash to stop it before it backs up too far...

Last edited by Matt Kirsch
Original Post

Replies sorted oldest to newest

If the transformers are in phase, the transfer from one loop to the other can be as smooth as you want it to be by setting the throttles roughly the same.  Sometimes, I forget, and one throttle is very different than the other and this is no big deal either.  As soon as the locomotive is completely on the next loop, it will speed up or slow down drastically since they were not matched up.

 

 

 

 

 
I'm not sure what you are saying.  Can you expand?
 
Originally Posted by ADCX Rob:
Originally Posted by Matt Kirsch:

For now, I'm using a CW80 on the inner loop and the 40W from my childhood UP 4-4-2 steamer set on the outer loop.

You are OK with this combination.  It is not recommended with two older(non-electronic, contemporary) transformers, and especially not recommended for two handles on the same transformer(Z,ZW,V,VW,R,KW,SW)

 

Originally Posted by sinclair:

Especially since the manual for my ZW-C shows how to wire a loop with all 4 handles of the ZW.

Of course, you read the part that says "not recommended with two older(non-electronic, contemporary) transformers, and especially not recommended for two handles on the same transformer(Z,ZW,V,VW,R,KW,SW)".

 

You are good to go with the ZW-C, as it is an electronic transformer.  Carry on!

Post
The Track Planning and Layout Design Forum is sponsored by

AN OGR FORUM CHARTER SPONSOR

OGR Publishing, Inc., 1310 Eastside Centre Ct, Ste 6, Mountain Home, AR 72653
800-980-OGRR (6477)
www.ogaugerr.com

×
×
×
×
Link copied to your clipboard.
×
×