Code 65 turnout spring switch?

[BOK]

I am constucting a small N scale layout and would like to use a few code 65 switches as "spring" switches. However, while the engine or car will physically go through the the points lined against movement the engine stops until the switch points are lined properly for the route.

Do any of you fine modelers know of a way to disable the wiring underneath the switch to make it a run through/spring switch?

Thanks in advance for any replies.

Barry


 

[mmagliaro]

Well, here's how I did my spring switch.
This was for a straight DC setup, but I don't think that will matter for this discussion.

When you run the train against the sprung-shut points, the engine stops (I assume) because you probably are using the points
themselves for power-routing to the legs of the turnout. Since the points are not lined to the leg that your train is coming out on,
it has no power.

It is common to use a tiny SPST (or DPDT) slide switch with a wire linkage to the throwbar to control the points AND to also reliably route the power to the turnout legs (not relying on the points themselves because their contact gets unreliable after a while).

I just used the slide switch to appropriately power the legs of the turnout, and the frog and points, so that you have
power to run out through the sprung points.  I also use a center-off switch so it can have 3 states to allow the siding to
be killed so the train can be parked there.

Here's a video of it. 
https://www.youtube.com/watch?v=0wWV_HAf8qg

[BOK]

Thanks, Max for that informative video.

It will help me figure out how to make the frog let current go through the code 65 turnout either way on my dcc layout.

Barry

[nkalanaga]

On DCC I'd probably isolate the points from the frog, jumper them to the outside rails, and power the frog with an auto-reverse of some kind.

[mmagliaro]

nkalanaga: 
When the spring-loaded points are pushed against one stock rail and the engine is about to push through them, the points are powered by the wrong rail.  As soon as the first engine wheel hits that spot to start pushing the point rail open, it will short.
Are you just counting on the auto-reverser detecting the short and flipping the polarity as soon as the wheel starts to push through the spring-loaded rail (where the short will occur)?  I would think the point rails would also have to be powered off the auto-reverse to make this work.

[nkalanaga]

Not if the points are isolated from the frog (gaps in the closure rails) and jumpered to the outside rails.  Then they have to be the same polarity as the adjacent rail, regardless of position.

Think of the old plastic-frog trainset turnouts.

Now, if your turnout has an all-metal throwbar, I'll admit that that would be difficult.  One would have to replace the throwbar.