How can I control turnouts with momentary switches?

A small panel next to a model railroad turnout has a toggle switch and two red and green LEDs

Q: I’m wondering how to control turnouts with momentary switches. Does a momentary SPDT toggle return to center off after it throws the switch machine? If so, will a light-emitting diode (LED) connected to the toggle stay on? — Ron Vowles A: It depends on how you wire it. A momentary single-pole double-throw (SPDT) toggle […]

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What does all that freight car lettering mean?

A close-up of lettering on the side of a bright yellow Milwaukee Road covered hopper

Q: What does all that freight car lettering mean? For example, I have noticed build or rebuild dates and brake information. – Jack Pfleeger A: There’s a lot of variation in freight car lettering. It can depend on the type of car, the car’s owner, and the era, since regulations and practices changed over the […]

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What are some compact industries that receive coal?

A red coal hopper is pushed onto a wooden trestle at a coal dealer on a model railroad

Q: I need some ideas for compact industries that receive coal. Though modeling coal mines on a layout seems a popular topic, what about the coal’s destination? The coal needs to go someplace unless it just disappears into staging. Steel foundries, shipping ports, and power plants seem typical, but these require a lot of layout […]

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Answers to track laying questions

A mini screwdriver is used to attach a wire to a terminal on a green circuit board under a model railroad

  Q: I’m excited to lay track on my HO scale shelf layout. I have a few track laying questions. I’m using the Walthers turnouts with the little tab on the side for the frog power. I remember one of your videos where you talked about these turnouts and connecting the power to the frog. […]

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How do I measure the model railroad car wheels?

A diagram showing the shape of the NMRA RP-25 wheel profile

Q: I want to replace some wheelsets on my 1:32 passenger cars but don’t know where to measure the model railroad car wheels’ diameter.  I’d like to keep the wheel sizes the same with the new as the old so I don’t need to deal with altering the height of my couplers. Is the wheel […]

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What is HOn3 scale? Is it bigger or smaller than HO?

A diminutive black model steam locomotive on narrow gauge track

Q: What is HOn3 scale? If it uses HO scale track (1:87 gauge), it seems the rolling stock must be scaled wider and taller. Conversely, if I modify an HO scale/gauge locomotive for narrow gauge, I’ll need to build new, narrower track. Help me understand this. – Mark Dice A: Hi, Mark. Your second guess is the […]

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How big are structural steel loads?

Black-and-white diesels pass a siding with a flatcar holding bundled steel plates

Q: I’m planning on making steel slab, H-column, and I-beam loads for my run through freight trains. What is the width, length, thickness and height of the load for these structural steel loads? – James Shepard A: Hi, James. You asked a similar question not long ago, which I answered in my January 2023 “Ask […]

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What tools does a model railroader need?

A modeler surrounded by an assortment of tools checks the wheel gauge on a locomotive

What tools does a model railroader need? Q: What are the tools needed to take an empty room to a full working model railroad? My focus is to build a layout with the best scenery, from streets to tall mountains and everything in between. – Carroll Shirkey, Seattle, Wash.  A: Many beginners are left wondering […]

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How do I model glazed block walls?

A small rural building constructed of shiny concrete blocks with a pebbly texture

Q: I am researching and modeling Jefferson, Ohio. There are a number of buildings that are constructed from glazed block, as in this photo. I’ve seen the hobby manufacturers make all kinds of brick, stone and block sheet material, but I have not found material that looks like this. Do you have any ideas on […]

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