Steam locomotive making clicking noises

A model steam locomotive in 3/4 profile on a white background

Q: My HO scale Broadway Limited Imports Reading Co. T-1 steam locomotive is making clicking noises. The strange popping, cracking noise is most noticeable in curves. Otherwise, the engine runs fine. Although it was bought some time ago, it is operationally new. I’ve attached a short video. Any thoughts? — Bill Franz A: It’s hard […]

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How do I calculate the grade on a double deck layout?

Two levels of a model railroad seen above each other

Q: I need to calculate the grade on a double deck layout. Though I’ve been interested in model railroading since I was a child, it’s been quite some time since I was active in the hobby. Now that I’m retired, I’m planning a layout. After much deliberation, I’ve settled on a two-level around-the-walls design. My […]

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Can I replace trucks on Walthers HO Horizon cars?

An undecorated silver modern passenger coach

Q: Do you have any suggestions on how to replace trucks on Walthers HO Horizon cars (item No. 932-6073)? — Daniel Kielty A: That part number corresponds to an HO scale Massachusetts Bay Transportation Authority commuter car. The Horizon fleet passenger cars, used by Amtrak as well as municipal transit authorities like MBTA, were built […]

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Is there a way to automatically slow DCC locomotives?

Three blue HO scale diesels pull a stack train over a high steel trestle

Q: I have a trestle bridge above a deep ravine on my HO scale layout and would like to automatically slow DCC locomotives approaching the bridge to avoid too rapid an entry. Using DCC, is there a method to provide such “auto deceleration?” — Paul Savello, Cedar City, Utah A: Hi, Paul. Such a thing […]

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How do I check the DCC momentum settings on my locomotive?

A hand holds a Digital Command Control throttle near a black-and-orange HO scale diesel on a scenicked layout

Q: In your “Ask MR” column “Speed matching DCC locomotives for better consisting”, you suggest to turn off the locomotives’ momentum, because momentum will interfere with accurately measuring the locomotives’ speed. My question is: How do I know if the ESU decoders that came with my locomotives are programed with momentum? I am using an […]

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Where do I get HOn3 track and trains? Can I use N scale?

A steam locomotive pulls an old-time passenger train on an HO scale layout

Q: I always thought N gauge track was the go-to gauge for narrow gauge HO operating equipment. I found out yesterday that is not true. I got a model kit for an HOn3 locomotive. Everything was going smoothly until I discovered the wheels and trucks supplied with the kit are spaced too far apart for N gauge […]

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How do I add a sound module to a layout?

A small circuit board attached to a speaker, activation button, and battery pack

Q: I recently added a Faller carousel to my HO scale model railroad. It is lighted and motorized. Now I would like to add a sound module to the layout to play carousel sounds. Any suggestions where I might find one? — Larry Gaiardelli A:  I couldn’t find a sound module pre-recorded with carousel sounds, […]

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Make and use a timetable for a model railroad

A model railroad employee timetable

Q: Do you know of any software for producing a timetable for a model railroad? I would like to create a timetable that uses the same fonts and formats as prototype documents once used by the Milwaukee Road and Chicago & North Western. — Cully Kowal, Fond du Lac, Wis. A: Java Model Railroad Interface (JMRI), […]

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Alcohol stain fogs Dullcote; but what if the stain is dry?

A model of a wood-sided hopper with chalky, faded paint

Q: I’m aware that India ink-alcohol stain fogs Dullcote and similar dulling lacquer products. But I’ve not been able to find anything on the internet that discusses what happens if you spray Dullcote onto something that has previously had an alcohol wash applied, but the alcohol has completely evaporated and is dry. I assume there is no effect, […]

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Locomotive electrical problems and how to solve them

A disassembled model locomotive truck with corroded contacts

Q: I’m having some N scale locomotive electrical problems. My 6 x 8-foot layout is powered by NCE Digital Command Control. My locomotives will roll a few inches, then stop. If I give them a push, they stutter on/off, on/off, on/off. When the locomotives are moving, the block occupancy detector’s light-emitting diode (LED) is on, […]

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Why is it needed to mark an F on the front of a diesel?

A black-and-white diesel hood unit seen in three-quarters view on a sunny day

Q: I am wondering why they mark a little F on the front of a diesel. I know it stands for “Front.” However, isn’t it obvious in most cases where the front is? And in the case of a center cab switcher, where it isn’t at all obvious, why does it matter? What is the practical purpose of […]

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