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Wednesday, April 3, 2024

Trackwork wars, Part 11

When last we visited this topic, the subject was the need to replace a pair of switches on my layout that had caused derailments and other trouble many times, over numerous operating sessions. Sometimes severely, sometimes not, but definitely trouble. I showed the location after removal of one of the switches (see that post at: https://modelingthesp.blogspot.com/2024/03/trackwork-wars-part-10.html ). 

I next completed removal of the two switches by taking out the curved one at the right of the photos I have been showing in prior posts. Here is the area with both of the offenders removed. At the top of the photo below is the new Walthers curved switch that will be installed.

After some careful fitting, a replacement No. 6 switch was placed at the left of the scene shown above. Rails were painted a kind of “Roof Brown” color, and aligned with the trackage at upper left (two tracks: one is the lead to the Jupiter Pump & Compressor plant, the other is the main track in Ballard). Testing of the new switch seemed to work well, though of course locomotives could only be run onto the new switch at this point, not completely through it and beyond. Here I was checking level.

With an operating session coming up, it occurred to me to carefully test other switches on the layout which have been problematic in the past. Almost immediately I found that one of the point rails at the east end of the Ballard double main had come un-soldered. This happened once before during an operating session, so I was glad to find it now, and re-solder. Here is how it looked when it had just failed.

My next project was to fit the second replacement switch into the area being worked. As I was starting this, I realized what a  different scene was being created by the work tools and materials, compared to the layout scene that usually exists here.

The new switch was readily fitted into the existing track alignment, but a new problem arose: the throw bar on this switch is located differently that was the case for the previous switch, and not even close — instead, it’s around three-fourths of an inch away. And what’s worse, it’s different in the direction that is closer to the adjoining switch, meaning the two MP1 switch machines can’t remain in their present locations.

I’ve shown all this below, with a large red arrow aligned with the current location of the throw bar of the switch that was previously located to the right. You can readily see, not only that this location isn’t at all close to the throw bar of the new switch, but equally seriously, that the new bar location would practically touch the switch machine to the left.

Obviously, I have to dig up the actuating rod that is buried at right, as it no longer connects to anything. One possibility then is to simply rotate the machine at right somewhat clockwise, and then operate a connecting rod at an angle to the track, instead of perpendicular.  It might also be practical to move or rotate the MP1 at left. Rotating it 180 degrees would probably be easiest. Then the one at right could be relocated so as to operate perpendicular to the track. Moving both switch machines isn’t attractive but might prove necessary. More on all this later, when progress has been made.

Tony Thompson

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