That does not make the direction independent on each of those sections, it just allows you to cut power and park a train on any of those tracks with a toggle between the raila nd the power, which is as much as you can do with SPDT.
But as I said way back, there's little point having a center off directional DPDT toggle for each yard/siding, there's generally no need to change the direction on just a siding but not the connected main - in fact if the siding and main are set to opposite directions and metal wheels or a powered loco or lighted car crosses the gaps, it's a short.
--Randy
Modeling the Reading Railroad in the 1950's
Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.
rrinkerin fact if the siding and main are set to opposite directions and metal wheels or a powered loco or lighted car crosses the gaps, it's a short.
Another reason to go DCC,
Henry running and ducking
Henry
COB Potomac & Northern
Shenandoah Valley
diagram from HOmainline
if mainline DPDT is intended to control direction on all mainline and yard tracks corner terminals should be "cross wired" as shown in diagram below and connections A and F connected to top 2 terminals that motor is connected to below, along with any other mainline track connections
greg - Philadelphia & Reading / Reading
Based on that drawing - the mainline DPDT only functions as a terminal strip to join the wires.
Also missing a wire from the South Yard SPDT to the South Yard isolated rail.
rrinker Based on that drawing - the mainline DPDT only functions as a terminal strip to join the wires. Also missing a wire from the South Yard SPDT to the South Yard isolated rail. --Randy
Randy,
On your first point above, more comments coming soon.
As to your second: I'll make that correction. Thanks!
Kerry
gregc diagram from HOmainline south yard SPDT center terminal needs to be connected to gapped south rail (this is different from north yard SPDT. based on diagram, mainline DPDT has no function if all mainline tracks are connected to the mainline DPDT the same way, i don't know how direction is controlled on mainline if mainline DPDT is intended to control direction on all mainline and yard tracks corner terminals should be "cross wired" as shown in diagram below and connections A and F connected to top 2 terminals that motor is connected to below, along with any other mainline track connections
Greg,
1. Great! That's what I'm looking for. I'll then connect the south yard's SPDT center lug to the gapped south rail.
2. I didn't bother to show the cross wiring - or the wiring for the other four lugs - on the mainline DPDT because I mentioned a few times before that it - and the reverse loop DPDT - have been functioning flawlessly for two years now (and continue to do so) and because it's also not the (direct) focus of my question, though, of course, it's critical.
Granted, however, without showing the cross and top & bottom lug wires in my diagram, it is misleading. Guilty as charged!
So, both DPDTs are cross-wired, and all six lugs on each are properly wired for mainline and reverse operations.
3. See no. 2
Other than that and Randy's south yard/SPDT correction, how's it look? Ready to go?
I think so.
BigDaddy I think so.
Gentlemen,
Thanks to all who contributed to addressing the question here. Problem solved!
GNMT76 Gentlemen, Thanks to all who contributed to addressing the question here. Problem solved!
What'd you end up doing?
-Dan
Builder of Bowser steam! Railimages Site
Dan,
Well, I took up skydiving instead of messing with all those wires!
Actually, this simple solution:
- center lug of each SPDT wired to its respective yard rail
- top lug of north yard SPDT wired to bottom lug of the south yard SPDT and
- bottom lug of south yard SPDT wired to the negative bus
Works like a charm!