Ask MR: Why were so many covered hoppers parked there?

A long line of covered hoppers recedes into the distance on a storage siding

Q: Recently, while driving along a highway in the vicinity of Lindsay, Mont., I came across a long, continuous line of covered hoppers. The photograph I took hardly does it justice. These cars stretched on for the better part of eight miles across the Montana prairie. I’d never seen such a thing before. From what […]

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Ask MR: Why are car wheelsets one solid piece?

Spare car wheel sets in a Union Pacific yard accumulate snow during a snowstorm

Q: Have the model railroad manufacturers ever considered making the wheels on car trucks free-wheeling, or more specifically, independent of the axles? It seems to me that trucks would bind less on tighter radius curves if each wheel could rotate independently. – Wilt Nelson, Leesburg, Fla. A: Wheels and axles on model trains are solid […]

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Ask MR: How long must a point-to-point layout be?

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Question: What is the smallest point-­to-­point layout that doesn’t look like just a section of test track? How long does a shelf layout have to be to look like a working operation could be taking place? – Richard Helton, Meridian, Idaho Answer: That’s a matter of taste and perception, not something that can be quantified […]

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Ask MR: What do different TTX marks signify?

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Question: I have six freshly painted brass O scale auto racks that I need decals for. I’ve found some TTX flatcar sets that might be close. Do auto racks have special letters before or after the reporting mark different from those on a regular TTX flatcar? – Tom Champley, Oregon, Ill. Answer: Yes. Each type […]

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Ask MR: When were knuckle couplers instituted?

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Question: What type of couplers should be used for various types of cars (freight, passenger, Railway Post Office, Express, etc.) for the era between 1890 and 1920? – Michael Prahl, Cedar Falls, Iowa Answer: What kind of couplers you use isn’t dependent on the type or class of car; all classes of car had to […]

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Ask Trains

Questions and Answers about full-sized, model, modern, and historic trains, from across Trains.com […]

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Ask MRVP: Episode 52

Host David Popp has scores of your hobby-related questions to address in his triumphant return to MRVP headquarters! As he tools around the MR workshop, MR&T layout, and other popular project railroads (several are up for sale!), he tackles inquiries regarding benchwork, trackwork, wiring, scenery, and so much more. […]

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Ask MR: What’s a control point?

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Question: I’ve been noticing the term “control points” (CPs) being used in train-watching videos and in your magazine. The article on John Schindler’s amazing St. Louis Junction [March 2020] mentions CPs including West Madison, Gratiot, and Chicago Throat. Canadian Pacific’s Paynesville Sub has CP 115 and CP 70. This tells me CPs can be designated […]

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Ask MR: Got any ideas for an uncoupling tool?

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Question: I model in N scale. I’m having problems uncoupling the cars. Is there a tool out there to assist with this task, or do you have a suggestion on how to make this easier? – William Semanko, Junction City, Kan. Answer: Many N scalers like yourself uncouple their cars by inserting the point of […]

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