Model Railroader Basic electricity and control

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DRILLING A FEEDER WIRE HOLE SOLDERING THE FEEDER WIRE
5 6
More on our Web site Since the original track plan had only one With the wire run through the hole, I was
To see the DCC-controlled Carolina wire running to the interchange track, I ready to solder the feeder wire to the rail.
Central in action, visit our Web site needed to add a second wire. That meant I Use caution when soldering the wire to the
www.modelrailroader.com. had to drill a feeder wire hole. I used a pin rail so you don t melt the plastic ties, and be
vise and a no. 60 bit on the top of the layout. sure to clean any paint off the side of the
Don t worry if the hole is too big. You can rail so the solder has a surface to stick to.
come back later and fill it in with ballast. In Once the new connection is cool, use needle
order to run the wire underneath the layout files to shape any excess solder to the con-
to the command station, I enlarged an tour of the rails to prevent derailments.
already existing opening in the hollow-core Touch up the soldered area with paint so it
door with a utility knife. blends in with the rest of the rail.
Converting an N scale
in an evening layout to DCC
6:38 PM 6:52 PM
CAROLINA CENTRAL
DCC WIRING DIAGRAM
Terminal rail joiners
Insulating rail
joiners
Generator
CUTTING THE RAIL
3
Double-pole
double-throw
Single-pole
Single-pole Command
With the operational hardware in place, the
switch
double-throw switch
single-throw switch station
third step is to begin preparing the layout
for DCC operations. Start by creating an iso-
ADDING A DOUBLE-POLE DOUBLE-THROW SWITCH
4
lated section of track for programming each
ILLUSTRATION BY RICK JOHNSON
locomotive s decoder address. It works best
to use a siding or seldom-used track as a With a double-pole double-throw (DPDT) When the switch is set for programming
programming track. I used a razor saw to cut switch in hand, I was ready to begin the mode, the isolated section of track can t be
gaps in the rails on the layout s interchange most time-consuming part of this whole operated. Once finished programming a
track. Be sure to cut the gaps carefully so project: replacing the single-pole single- locomotive s decoder, setting the switch to
you don t damage nearby rails or scenery. throw (SPST) switch with a DPDT switch. operational mode restores power to the
After the gaps were cut, I smoothed out the The DPDT switch allows you to use the programming track.
rough spots with a needle file. interchange as the programming track.
9:05 PM
7RUNNING THE TRAINS
The final step, and the one that lets you know To run multiple locomotives, I had to give After roughly three hours of work, the
if the wiring was done correctly, is to program each locomotive its own two-digit address. Carolina Central has been converted to DCC.
the locomotive s decoder address. The steps When operating the layout, you can toggle Now we can run multiple trains on the layout
for programming the locomotive s decoder are back and forth between the two locomotives at the same time, adding to the operational
included in the instruction manual. to control them independently. fun of this small layout.
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