Hello,
I am looking for an electrical schematic for an American Flyer 720A switch control box. Any help would be appreciated.
Thank you.
M
I did not respond to this post because I have never seen an internal controller wiring diagram. The wiring is fairly simple.
The description Rob provided is correct for the turnout in the image posted. That image is a 720 turnout, not a 720A. The 720 was made for a short time beginning in 1946. As the diagram shows the control levers are not self centering. The reason is there was a contact in the 720 turnout that cut the power to the solenoid when the turnout frog changed position.
The 720A eliminated that turnout contact and changed the design of the controller to make the levers self centering. Each lever is a SP4T set of contacts. Pushed all the way to one end, the controller engages the contact that powers the turnout coil. When released, the the lever automatically returns to a second contact that only powers the related position light in the controller. Pulled in the other direction, the process repeats for the other frog position.
A 720A controller can be used with 720 turnouts but a 720 controller must not be used with 720A turnouts.
1 Like