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About the Model Railroad

RTAC Software


The Randall Museum in San Francisco hosts a large HO-scale model model railroad. Created by the Golden Gate Model Railroad Club starting in 1961, the layout was donated to the Museum in 2015. Since then I have started automatizing trains running on the layout. I am also the model railroad maintainer. This blog describes various updates on the Randall project and I maintain a separate blog for all my electronics not directly related to Randall.

2019-02-16 - New RDC Coming Soon

Category Randall

Courtesy of the nice folks from Rapido Trains Inc., I’ve experimented a bit with this on Saturday:

These are the latest Rapido RDC Santa Fe, numbers 191 and 192. A preliminary run worked fairly well -- I had to adjust the front plow as it was riding too close to the rails and actually binding on some flex track junctions. They need to run a bit more to be broken in, and I still need to do the LokSound “slow crawl” adjustment as well as adjust the volume.

I’m hoping they will be part of the daily automation in a couple weeks at most.

For more history on these unique RDCs, please visit this site: They have a unique story and is quite worth reading and this site actually explains why both cars are looking different.

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