I went down to the shed this afternoon to turn everything on
and run the track cleaning train all the way around the layout and to visit
most sidings as well. I fired up the track power and you guessed
it. I was getting a short. It was in power District number 4.
That is the section of track from Cougal Spiral just north of Kyogle through to
Acacia Ridge Yard until just short of Rocklea Sidings. Well that was a
disappointment! So I isolated that section and ran my track cleaning
train all the way up to Kyogle and them jumped into problem solving mode.
I quick glance at all the track work revealed nothing. The last time I
was in the shed, I had that section of track operational as I was testing my
narrow gauge 2300 class loco. So I knew the problem had to be relatively
simple. I then started looking under the layout at all the wire from the
power district track bus ensuring that the two wires in the bus, had not come
together at any of the points which had track power jumpers up to the track
soldered to them. Nothing was evident. My next thought was to get
out my multimeter and measure the resistance at various points along the track
to determine if I could find the point of least resistance. But as I got
to the farthest end of Acacia Ridge Yard on my visual inspection of track, I
started checking out my parked Steel train that was in siding no.2 of the
reversing loop. Well I looked at one wagon, it had a set of wheels
directly on the joiner that separates the section that is the beginning of the
auto reversing section on the return loop at that point. Well I moved the
wagon about 3mm so it was no longer on that section of track spanning the auto
reverser and turned track power on. My layout ammeter was no longer
spiking up to 3 and half Amps. That short had now gone.
I guess there may not be many power feeds in that section
and the track is getting the power feed along through the joiners in the
track. I single wheel on that join at track power up time was not enough
to trigger the auto reverser. I can drive trains through that section and
the auto reverser operates every time. Maybe this one wheel was not
suitable to act as a trigger. Well, eventually I completed the track cleaning activities all the way
from Grafton Yard to Cassino and then out along the Murwillumbah branch. I
then backed up to Cassino and proceeded to Dutton Park and took the Fisherman
Islands Branch, before again back tracking to Dutton Park, and then travelling
through to South Brisbane Interstate Station and Yard. The track cleaning train then ran back along the main line until it made it to its siding in Grafton Loco.
The fridge has been stacked with some more soft drinks and
ales. The outdoor setting and pergola were cleaned. The timetable
cards are ready and the updated train graph has been installed with the latest
trains included. So tomorrow the only things to do is to get the
tea/coffee, milk, suger and coffee cups out, turn on the layout lights and fire
up the Raspberry Pi for wifi access for the poor people who cannot afford an
NCE radio throttle – which is my preferred way to operate the layout. The
BBQ will be cleaned and then fired up for tomorrow’s snags for lunch.
I have about 9 coming over, but 2 will be late
starters. We have about 36 or so trains to run and I may pull a couple
from the timetable. The Fastclock will start at just before 15:00, so we
have about 10 hours to get through.
Well done on finding the short. Bridging a rail gap with a metal wheel is something that caused me a lot of problems on the exhibition layout 12th Street Yard a number of years ago. Possibly why Peco insulated rail joiners have a little piece of plastic that fits between the rail ends. You can do something similar with a piece of styrene glued in the track gap, at rail top height. Have fun on your operation session
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