Sunday, July 14, 2013

The Turntable - Part one

 Well, nothing is easy. I am starting to lay the track in the steam terminal and I realized I had the get the turntable set up so I could align the tracks coming in. I had purchased a Mill House Studio turntable which is a very nice unit but made for 3-railers. While making it sturdy, he used a way over size garden railway track for the ring rail. So, I had to remove the entire ring rail assembly to put in scale sized rail to support the bridge.
 Here we have the ring rail support out of the table pit. He made them from nice birch plywood. It was a problem getting them out as he had them screwed in from the bottom so I had to remove portions of the drive assembly to get at the screws.
 This is the offending ring rail which I will use as a template for my new one. You can see it looks rather large.
 You can see how much bigger it is than one made from a scale sized rail would be. The foreground track is what I am going to use. It is from Micro Engineering and the ties are so firmly mounted to the rail, I think I can rip the track in half and not have a problem with them shifting. The scale rail is about half the height of the over sized stuff. This brings up the next problem. The bridge of the turntable is supported by the ring rail assembly. Thus, it will be too low to meet the tracks around the turntable unless we raise the base for the ring rail. We have to raise it 0.20 inches. Not an easy number as it is not a standard dimension.
 Well, I found some old cabinet trim that was 0.185 in thickness. Now you know why I never throw anything away! The rail I am using on the bridge is 0.015 higher than the rails around the turntable so we are now close enough. I cut the trim into short pieces to fit around the ring.
 Here you see the supports glued to the bottom of the pit and the ring rail base going back in.
 The base is now in and screwed down from underneath. That wire sticking up is to power the ring rail from below.
 I have sealed the seams with some wood putty and am letting it dry before sanding it.
You can see the gap of additional height that we have created. I am now going to make a plastic template to put in the slope of plaster that will close the gap and simulate a pitched surface that would drain the water to a ring area around the pit, away from the center bearing and the ring rail. More on that later.

1 comment:

  1. I have been following this process. I have removed the oversize pit rail but I am having problems removing the wooded ring. looking at the photos, it dose not look like its glued down. a ran an xacto blade around the wood ring to cut the gray paint loose. but I am still have trouble getting it free.