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Originally Posted by Model Structures:

Is there a way to make an Atlas O turnout using the standard Atlas O switch machine non-derail without using the 6924 non-derail board? Maybe using a DPDT relay and isolated track as with Ross Turnouts?

Thanks

Joe

The problem would be that the Atlas switch motors burns out easily.  You could wire the isolated rail inputs to the push button circuits, but the continuous activation by each addition wheel set, most likely, with out the 6924 relay board time out feature, would burn the switch motor.  Some have switched to the DZ1000 or DZ2500 switch motors.

 

Last edited by Mike CT

Just a thought, and I suppose you have tried this already, but I have Atlas switches and don't have any 6924's hooked up yet. I also don't have my switching figured out yet (as far as which way they need to be for proper train routing). Still fiddling with the track layout. The springs in the switches have been preventing my stuff from derailing when I forget to point the switch in the proper direction (which seems like about every time I use one).

Originally Posted by Model Structures:

rtr:

I have been doing the same thing - ie relying on the springs to move but some lighter weight cars I use don't have enough mass to move the springs so they derail.

Joe

Yes, I have also recently noticed a car or two I have like that. I have a few 6924's, and have gotten a lot of help here on the wiring, but haven't added any yet. If I can get everything working pretty well I may only use a couple where absolutely necessary. I have also considered trying to make all my rolling stock comply with the weight recommended by the NMRA. Got some weights and their weight chart, but that's about all the further along I am with that project.

Looks like I will end up slowly going with DZ-1000 switch machines as replacements for the Atlas Switch machines as those machines burn out. The price of the 6924 board and the DZ-1000 are about the same. With the DZ-1000 all it takes is an isolated track and one wire to make the turnout non-derail. I love my Atlas O track but those Ross turnouts...................

In the meantime I have reconfigured my wiring to include diodes in the power lines to the Atlas switch machines. These have greatly improved their durability.

Looks like I will end up slowly going with DZ-1000 switch machines as replacements for the Atlas Switch machines as those machines burn out. The price of the 6924 board and the DZ-1000 are about the same. With the DZ-1000 all it takes is an isolated track and one wire to make the turnout non-derail. I love my Atlas O track but those Ross turnouts...................

In the meantime I have reconfigured my wiring to include diodes in the power lines to the Atlas switch machines. These have greatly improved their durability.

what size diode?

You can do it using a Tortoise machine and insulated rail. The down side is that Tortoise machines are slow motion machines unless you run them with 12VDC. We use 1/2 of the 14VAC via diodes at the club. Train operation would have to be sufficiently slow (or the sensing insulated rail sufficiently long) to allow enough time for the points to move.

 

 

Tortoise%20Non%20Derail%20Diagram

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ENichter:

I believe it is the 1N4001.

See attached sheet - http://www.vishay.com/docs/88503/1n4001.pdf

A friend who wired the San Diego layout recommended it. At 1 amp and 50 volts it seems like overkill but no switch machine has burned out since.

I will contact Dan and double check the part number.

Joe

 

You have to look close but you can make out the diodes in line on the power wires.

 

 

Dirty Dog Railway 009

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  • Dirty Dog Railway 009
Last edited by Joe Fauty

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