Possible Homasote Replacement

Like most model railroaders, I'm always on the lookout or looking for a way to stretch funds and I just might have found a way to accomplish this. The fall of 2019 I spent some long deserved time with close friends operating on one of their layouts. While spending time with them a conversation on layout construction came up. One of the subjects was on Homasote. I had mentioned that I was using Homasote and Dave Cochrun turned to me and told me he had found a much cheaper replacement for Homasote. A type of fiber board that could be acquired at a local Home Depot. Upon returning from my trip and with pictures in hand, I immediately went in search for this fiber board at my local home depot. I was unable to find the same material that Dave had used but did find something close to it. I had found a fiber board impregnated with a light coat of asphalt called Southern Pine Asphalt Board. the coating has a light tacky feel to it, but once I got it home and after a few days the tackiness went away. I will update the blog as my experience with this material continues.

As you can see in the photo, the coating does not penetrate the full thickness of the board.

The photos below are examples of the material Dave Cochrun had located and used. At the time he mentioned this to me, he was unsure it was still available since it had been 18 months since he last purchased it. The material in the photos above was all I could locate that seemed to come close to what Dave had used. (Photos below provided by Dave Cochrun)

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Helix Construction

Its been a while since I posted to the blog and wanted to show progress that was made the summer of 2019. This should have been posted before the "Getting Prepped for Helix and Mainline Connection" post. The helix was a summer long project and I am quite satisfied with its turn out. The helix climbs 27 3/4 inches with a total circumference of 67 5/8 inches outside edge to outside edge. Track radius for the inside loop is 28 inches and the outside loop is 30.5 inches. Construction for the helix was based on the method attained from Jeff Johnston on YouTube. (Helix How To Part 1) Thanks Jeff for your video! The most important part for the helix is the first loop because all other layers on top follow right along with the first loop as building progress continues upward. I got very frustrated with this step as it took some time to perfect this first layer and getting it right. One attempt, I spent a whole days work getting things the way I thought they should be to find out it wasn't right and had to start over the next day.

Construction of the first layer.

Continuing layers to the top.

Wiring for the helix is shown in the photo below. There are 2 of these 180 degrees apart to feed the helix and minimize voltage loss.

Close up view of the feeders to the track.

Birds eye view of the completed helix. As close as I can figure, the helix grade is just over or just under 2%. Construction entailed 3.5 sheets of 1/2 inch plywood and close to three boxes of 100 piece code 100 Atlas flex track. 

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