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February 6th, 2016

Posted by [email protected] on February 7, 2016 at 5:45 PM

CMRRC Newsletter Update

I thought I would give you an update on some electrical problems that we didn't know we had have now been corrected since the newsletter release.

Last Thursday night Dale discovered that on the center peninsula the two power supplies were somehow connected together by mistake.


The peninsula has an upper level line and lower level line with a power supply for each. In addition each side of the peninsula has an upper and lower power bus. The south side has an additional power bus on the section that was part of the old layout. The lower level buses on both sides are connected to one power station while the upper level buses on both sides are connected to the other power station. They should be independent. However it was discovered that a short in one area anywhere in the peninsula would cause both power supplies to short. Since both power supplies were shorted they would fight to try to reset and in most cases would not reset on their own. The main power to both would have to be recycled off-on.

This indicated that somewhere the upper and lower buses were connected; the main suspect would be in electrical drops from the tracks.


Saturday Dale, Bob, Keith and John spent a few hours tracing electrical drops and found a few other problems as well. One section of a main bus was not connected and another bus segment in a new area which should have been connected was not. This means that the electrical power was only making contact through the track and not the full bus line. Those were corrected. For the power station shorts, we found several track drops that were connected to the wrong bus lines which causes the upper and lower buses to be connected instead of independent.


I ran a locomotive around after the corrections and things seemed to run a lot smoother. If a short happens, such as a derailment, on one level, it does not affect the other level.


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