DS Texas,
The fiber pins in the control rails of the switches should stay, and just add another fiber pin to the center rail to separate the blocks. You are correct in straight route = green light and curve route = red.
After considering your operations and assuming the traffic will mostly flow in a clockwise direction, my suggestion on power separation is shown below.
In my picture below:
Black dots are center fiber pins.
M1, M2, and M3 are the mainline and on the same right handle of the zw . Each M can be on or off independently of the others. Think of this as each being on a separate light switch for now.
I1 and I2 are on the inside and on the same left handle. So you could have a train sitting on I2 (turned off) while operations are performed in I1.
I visualize the movement of trains as this:
Beginning state:
(All clockwise) Train 1 in making full loops of the main line. Train 2 is is making full loops on I1. Train 3 is waiting on I2.
Movement:
Train 1 (locomotive) stops in M3. Train 3 pulls out of I2 and onto M1 stopping at M2. Train 2 moves from I1 to I2 stopping to stage there. Train 1 leaves M3, into M1, then switches into I1.
Result:
Train 1 is doing laps on I1. Train 2 is staging on I2. Train 3 doing laps on the mainline.
You could also run 2 trains on the mainline at a time with the 3 power blocks. Spacing of M2 should be tailored to the length of trains you plan to run.
You can control each block by toggle switches or by insulated rails and relays. Also look at pgs 32 and 29 in this link:
https://ogrforum.ogaugerr.com/...83860657/Booklet.pdf
JD
