Can this be done with relays? Basically I have a loop with an inside passing siding that goes through a ‘helix’. While one train is traversing the the passing siding ( ‘helix’ ), the train on the outer loop has time to make a trip around the perimeter track but I want it to stop and wait for the train that has just traversed the ‘helix’ to re-enter the mainline and susequently take the siding ( ‘helix’ ) again and repeat the process.
Most of the circuitry I’ve seen thus far deals with trains overtaking one another and preventing rear-end collisions, Can anyone point me in the direction to literature dealing with this type of automatic operation? TIA
The Bog
If I understand you correctly, yes. You want one train to start the other that’s in the control block, right? Just insulate the track the controlling train is to be in & wire to normally open. The controlling train activates the control block from a safe distance & starts the train in the control block.
The train on the perimeter track stops automatically in the insulated control block until the other train sends power through the insulated tracks.
I bought my relay from scottsodds-n-ends.com. His are designed for toy trains & he offers excellent help, both with diagrams & via telephone.
wyomingscout
Thank you Wyomingscout. That confirms my thoughts on what I’m trying to do alright. I got a Radio Shack DC relay that requires a full-wave bridge rectifier to work with my AC Lionel layout under construction. I’ll wire it up with a ‘Stop Block’ and a ‘Trip Block’ as you suggested. I think the complications, if any, will come when I try to wire in the Lionel #153 block signals that will indicate ‘Green’ when the opposing train ahead clears into the siding ( ‘helix’ ) and the train on the outer loop powers up and leaves. I’ll let you know how it all turns out. Maybe even post a video.
The Bogester
The 153 block signal is not a problem if you got a DPDT relay. One side will be to power the track where it is ‘normally open’, or no power. The other side of the relay goes to the 153 signal where it will be ‘normally closed’ i.e. red.
When the controlling train enters the insulated track(s), the power is transferred through the wheels & axle to the insulated rail & thus to the control block. That powers up the control block & changes the 153 signal from red to green.
Good luck!!
wyomingscout