I'm looking to build a passing siding with a timed relay to stop a train entering the siding, pause it there for a 45 seconds or so, and then release it to running the rest of the siding and back onto the main track. The siding will be hidden under a tunnel, so the effect is that the train enters the tunnel and disappears for a while.
I'd love to have the CTT Electrical Forum's members advise me on how to do this. How exactly should I wire the sections of track? Here's what I came up with, but am not at all sure (see attachment) that it will work as intended. I also have these specific questions:
Also, what size timed relay -- 1NO 1CLSD, 2 NO/2 CLSD, # volts, can the bridge rectifier be incorporated into the relay so no extra wiring?
I'd appreciate any guidance you can provide. I searched the forum with no success, but I'm unsure of the right search terms.
Thanks in advance for any help you might be able to provide.