HO scale model trains are 1/87 the size of real trains and 1/2 the size of O scale model trains (HO stands for "half O"). As with O scale trains, the letter "O" in HO is a misnomer since the designation was initially conceived as a zero to identify trains that were smaller in scale than 1. But the use of the letter O rather than the numeral 0 crept into everyday speech among model-train buffs and remains the standard way to refer to HO scale today.
Though first invented in the 1930s, HO scale model trains didn’t become popular in the U.S. and Europe until the 1950s when the scale was heavily promoted by Märklin, Lionel, Athearn, and others. HO never quite gained acceptance in England, though, where larger 00 scale trains still predominate.
HO has two important benefits over trains of larger sizes. First, an HO scale layout of reasonably ambitious detail and complexity can fit on a table rather than requiring an entire room, as is the case with larger scales. Second, HO trains are less expensive to manufacture than OO, O, and other large-scale trains, which makes them more affordable to collectors and enthusiasts alike.
Most HO scale trains run on two-rail tracks using direct current (DC). Adjusting the voltage delivered to the tracks can increase or decrease the speed of the trains; reversing the polarity causes the trains to roll in reverse. Some manufacturers, notably Märklin, produce HO scale trains that operate on alternating current (AC), which is delivered to the train via a conductive third rail.
The gauge used by the majority of HO scale model trains is a standard HO gauge track that’s roughly proportional to the size of the trains running on top of it. But as with the OO scale trains in England that run on HO gauge tracks, HO scale trains are also made to run on a variety of different gauge tracks, which themselves are scaled-down versions of historical railroad track sizes.
Of these variants, the most common is called HOn3. This code denotes an HO scale train running on a track similar to the 3-foot, narrow gauge tracks used by Rocky Mountain railroad operators in the late 19th century.
One of the most enjoyable aspects of HO for collectors is the opportunity to join a local module club. Members of such clubs build modules of predetermined size; each module has a finite length of track. When members get together at model train exhibitions or in private homes, the modules are linked up and trains are run on the resulting massive layout, which often feels like more than just the sum of its parts.
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Airfix Model Railways
Postwar Lionel Trains Library
Tech Model Railroad Club of MIT
Clubs & Associations
- Train Collectors Association
- National Model Railroad Association
- Lionel Collectors Club of America
- Toy Train Operating Society
- National Association of S Gaugers, Inc.
- Train Collectors Society (U.K.)
- Lionel Operating Train Society
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Recent News: HO Scale Model Trains
Source: Google News
Railroad club thrills area childrenAlton Telegraph, July 3rd
Residents in attendance are treated to an explanation and demonstration of the 18.6 by 27.6 foot HO scale layout model train track that takes up a majority of the building. The track has roughly 1,000 feet of a multiple layers. Those in attendance are...Read more
Open House and Train ShowOmaha World-Herald, July 1st
They have been promoting their Open House & Train Show since last May and the response from train enthusiasts has been very exciting. Knowing the community is in a very rural location, Dave ... We have chosen 3 HO model railroad clubs that showcase a...Read more
Model Railroad Club does Red, White and Blue July 4Crossville Chronicle, July 1st
Red, white and blue trains, historic cars and an army base and train will be on display along with the club's usual 4,500 square feet of operating model trains. Also open will be the Upper Cumberland Railroad Society railroad ... The club operates...Read more
Spring Creek Model Trains thrives in rural NebraskaLincoln Journal Star, June 27th
When a train whistle blew, Dave's mother knew where her son would be. “I would always watch the train until it left town,” Dave, 57, said. When he was 10 years old, he received his first model trains as a Christmas gift, an HO scale set produced by...Read more
Model train store on track for a 'wow factor'Hastings Tribune, June 26th
Invited guests — including model train clubs from Corpus Christi, Texas, Denver, Colo., and Free-mo, a nationwide club with chapters across the country — will exhibit some of the latest product coming down the track today. Included in the show will...Read more
ig tiny trains: Model rail club visits valleyConway Daily Sun, June 23rd
Approximately 100 model train enthusiasts throughout the country are staying at the resort this week for the convention, celebrating their love of model trains while also taking rides on real trains such as the Mount Washington Cog Railway and the...Read more
Marion man a finalist in Lionel train competitionMcDowell News, June 20th
The Train Shop was probably the best and most extensive model railroad store anywhere between Salisbury and Murphy. The shop had all kinds of antique railroad memorabilia in addition to trains and accessories in N, HO, O and G scales. And there were ...Read more
Next model train open house to be held June 20Log Cabin Democrat, June 13th
Kids who love Thomas trains will enjoy the fun of operating HO-scale trains. Thomas, Percy, James, Emily, and Gordon characters will be running on the tracks. Bob Huber, the CAMRC Coach at this layout, will show kids how to run the trains as a hands-on ...Read more