Switch - Part 2 - Tortoise switch motor

This is part 2 on switches. I focus here on putting the switch machine in place and testing it directly without a digital command.

Introduction to the Tortoise switch machine

The Tortoise is very easy to use: it takes 12V DC in terminal 1 and 8. Switching the polarity will make the machine to move in the other direction. The Tortoise can be powered either continuously or momentarily. The Tortoise will not be damaged by an AC courant as long as it is less than 12V.

Here's how it works:

A quick note about connectors: I decided to not solder on the Tortoise and to use a connector that can be clipped on the connections of the Tortoise. It is the "Accu-Lites SNAPS Wiring Connector for Tortoise Switch Machine" bought from Traintek: https://www.traintekllc.com/accu-lites-snaps-wiring-connector-for-tortoise-switch-machine/

In addition, I put ferrules that I crimped at the end of my wires for a more durable connection. I use this set from Amazon: https://www.amazon.com/gp/product/B07LCF39W9

Mechanical installation

Three electrical wires need to go under the table from the Peco switch to the Tortoise - this is for the polarity of the frog. An addition larger hole is needed to move the throwbar.

First, I use the wired Peco switch to mark the location of the holes from the top of the roadbed.

 

I then followed the instructions about the size of the hole for the throwbar, but it turned out that it needed to be enlarged horizontally to allow for the spring wire to move freely:

From the top of the table

Under the table

The notice provides a template to locate where to put the screws that hold the Tortoise in place. It is important to draw the line between the frog and the throwbar to make sure the spring wire moves perpendicularly to the stock rails. I use 3/4'' screws with a #4 flat head:

The spring wire then needs to be shaped with pliers according to the instructions. The setup is then straight forward:

Now, I can plug the connector and test!

And from the top; nice and smooth!

Tortoise switching the frog's polarity

Now, I just have to connect the wires from the Peco switch to the Tortoise; the instructions are very clear: the stock rails go in terminal 2 and 3, then the frog in terminal 4. When the Tortoise moves from one position to another, the frog will be connected to the other stock rail, hence switching its polarity.

Here is it in action: