Been working on a revised track plan for the JRM Museum:
The two O27 switches in the above diagram will be spring loaded such that the dogbone will always be running clockwise. My question is: Is it easier to modify 1022 manual or 1122 electric switches to be spring loaded? I've got plenty of both knocking about the residence...
Thanks!
Mitch
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You can do it electronically by linking the terminals of the 1122 switches that are equipped with non-derail functionality. You simply need to run a wire link between the two center posts and another wire link between the post furthest from the switch machine.
There is further discussion here about using the non-derail functionality to control train paths here:
bmoran4 posted:You can do it electronically by linking the terminals of the 1122 switches that are equipped with non-derail functionality. You simply need to run a wire link between the two center posts and another wire link between the post furthest from the switch machine.
Yeah, I've done that in the past. I'd really rather just spring load 'em, though, as it'll be simpler and have less potential for messing up... 
Mitch
M. Mitchell Marmel posted:bmoran4 posted:You can do it electronically by linking the terminals of the 1122 switches that are equipped with non-derail functionality. You simply need to run a wire link between the two center posts and another wire link between the post furthest from the switch machine.
Yeah, I've done that in the past. I'd really rather just spring load 'em, though, as it'll be simpler and have less potential for messing up...
Mitch
Only real reliability concerns I envision would be use of track voltage to actuate the switches...
1) It may not be high enough to fully and securely activate frog
2) Frequent or constant activation can burn out the switch coils.
Both of those concerns can be addressed by using an accessory/fixed voltage and some very basic electrical components like so:
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