Troop train operations during World War II

Color photo showing portion of Pullman HO scale troop sleeper painted dark green and black with gold lettering on white background.

Q: While thinking through the operating scheme for my World War II-era (1944) model railroad, I wondered where troop trains sat in timetable priority. Obviously they were extras, but were they bumped up in priority to first class due to the war effort? — Callum Day A: I reached out to our former On Operation […]

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Which combinations of HO scale couplers work well together?

Color photo of red and gray HO scale EMD hood unit switching maroon boxcars at tan and blue industry with faded black tank car in background.

Q: I’m getting back into model railroading after a 50 year hiatus. I’m having trouble with knuckle couplers that won’t connect. I have new rolling stock from Athearn, Walthers, ScaleTrains, and Accurail. I also have several cars that I converted to Kadee. Couplers from different manufacturers don’t seem to work together. Are there any combinations […]

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Can DC and DCC locomotives run on the same layout?

Color photo showing two HO scale locomotive shells, one dark blue and one light blue, with mechanisms in foreground on white background.

Q: I have several On30 locomotives with Digital Command Control (DCC), but was recently gifted a passenger set that has a direct-current (DC) locomotive. If some DCC locomotives are sitting on the track, can I use a DC transformer to operate the DC engine on the same track without damaging the DCC locomotives? What would […]

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Veedersburg, Ind., signals

Color photo on HO scale model railroad showing diesel-powered passenger train and steam-powered freight train passing a signal. There are various structures in the background.

Q: The cover of the November 2025 issue of Model Railroader shows the signals for the west end of the Veedersburg, Ind., siding. The signal for entering the siding has no middle head so the best it could display is slow clear, but the signal for leaving the siding has a middle head and only […]

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Understanding N scale couplers

Color photo of N scale freight car truck with Micro-Trains Line Co. Magne-Matic knuckle coupler

Q: I have gone to train shows and garage sales and bought many N scale cars with all sorts of different couplers. I am trying to create my own standard and stick with the majority of people with N scale rolling stock. I know there are many vendors out there. Can you help me sort […]

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SD units on branch lines

Color photo of HO scale EMD hood unit painted orange and black on scenicked base with sky backdrop.

Q: In the May 2025 Ask MR, the answer to a question about early diesel power for the Milwaukee, Racine & Troy included this statement: “For road power, the MR&T would most likely turn to four-axle units, such as the Alco RS1 through RS3 and EMD GP7 and GP9. It’s possible the MR&T could have […]

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Railroad bus service to New York City

People in street outside two-story building with Coca-Cola sign on roof

  There are standard-gauge tracks close by, but they can’t be seen here, since they’re underground in this neighborhood. We’re at Columbus Circle in New York’s borough of Manhattan, on Thanksgiving Day in 1951, Nov. 22. How can that be deduced? Well, that’s the famous Macy’s parade that’s passing down the street, complete with a […]

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Backdating the MR&T locomotive fleet

Color photo of HO scale steam switcher on scenicked base

Q: The historic cars for the Milwaukee, Racine & Troy featured in the January 2025 episode of Ask Trains were very interesting (I grew up in Spokane, Portland & Seattle territory and am modeling some of that). What sort of steam and early diesel power would have been used to go with the cars of […]

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The Amtrak Floridian returns

a black and white photograph of a locomotive

  As an entity with 50-plus years under its belt, Amtrak now has plenty of its own history, in addition to that of the trains it took over as of May 1, 1971. Thus, it probably should not have been a total surprise when Amtrak launched a through train service in November 2024 between Chicago […]

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Types of model rail bridges and when to use them

Two model trains cross two elevated bridges in separate directions

Chances are good that if you’re building a model railroad, you’ll want to include a bridge. After all, who doesn’t love a good bridge? I can’t speak for anyone else, but when I think of San Francisco, I think Golden Gate. When I think of Duluth, Minn., I think of the Aerial Lift Bridge (well […]

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Finding the right freight cars

Color photo of three HO scale freight cars.

As many of you know, my primary modeling interest is the early days of the Burlington Northern (1970-1974) in Crookston, Minn., my hometown. One of the rail-served industries that has long intrigued me is the Otter Tail Power Co. (OTPCO) power plant. The 10,000 kilowatt plant, which hugged the banks of the Red Lake River […]

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Southern Pacific fans remember ‘The Bear’

"The Bear" Jim Mahon in white hard hat looking out window

When mourners gather Thursday for services at the Church of Christ of Latter-Day Saints in Auburn, Calif., it will mark a special occasion for anyone associated with the once-upon-a-time Southern Pacific Railroad: a moment to appreciate a true SP hero, James C. Mahon, known from Sacramento to San Antonio as “The Bear.” Railroaders in charge […]

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