I have installed a dozen blocks using current transducers (CT) to sense presence of an engine (or lighted car) in a block. I use DCC. The circuits were designed by Bill Hudson (see hudsontelcom.com). Some of my signal heads work fine. Some are showing a double indication, ie, the clear signal (green) stays lit. I can't figure out what's causing the problem even with Bill's guidance by emails. All the circuit boards work correctly if I install them in a block where a signal head works properly.

Something is terribly wrong with the gears in Bachmann's N scale locomotives.  After a few hours of running, the wheel gears split down the entire length of the shaft.  These gears feature a hollow press-fit feature for the wheel axles; this permits the wheels to be electrically isolated from each other.  When the shaft splits, two of the gear's teeth are split and cause jamming to the drive gear.  Further, the wheels' axles no longer fit correctly.

A thread for those of you who would like to follow along on my layout lighting progress.

Joe, or anyone who has done so, do you still mix vermiculite with plaster when you plan on carving rocks?

Thanks,

Gary