It would be helpful to know what type of turnouts you have.
Use Caboose Industries ground throws if the turnouts can be reached to throw by hand.
You're likely to wind up paying more for a home-made motor than the cost of an Atlas twin-coil mechanism if you're using Atlas turnouts.
If you want electric turnout motors, you have two types to consider:
If, OTOH, the object is simply to make the points move, it's possible to use a cheap slide switch at the fascia line (or imbedded in the layout surface - looks like a small relay case) and link it with fishing line and/or a bent paper clip to the throwbar. Extending the fishing line and hanging a used automotive nut from it will keep the whole system in tension. Total cost per turnout, about 20 cents more than the price of the slide switch, including a couple of screw eyes to act as cable guides.
The purely manual system requires the operator to be physically present at the point of operation - no big thing with a walkaround control system.
Chuck (modeling Central Japan in September, 1964 - twin-coil remote machines, mostly manual throws)
Thanks to each advisor! I'm using Atlas turnouts, pretty close together in a 6-track yard ladder, and the idea of a slide switch linked to each throwbar gets me thinking...I can do that.
bobbauie
Google found these.
http://www.westportterminal.de/manualturnout.html
http://members.aol.com/_ht_a/wdenton101/Tips.htm
http://www.proto87.com/turnout-controls.html
http://www.nmra.org.au/Layout_Tours/Saxon/Switch_Throw.html