Private company

Cox Models

Logo: The logo is from the following website: http://www.coxmodels.com/, Non-free logo, via Wikipedia3

Former division of Estes Industries

Cox Models, formerly a division of Estes Industries of Penrose, Colorado, is currently owned by MECOA (Model Engine Corporation of America) in Irwindale, California. As one of the hobby industry's oldest and most iconic multimillion-dollar companies, Cox is renowned for its production of miniature internal-combustion engines.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

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Cox Models, formerly a division of Estes Industries of Penrose, Colorado, is currently owned by MECOA (Model Engine Corporation of America) in Irwindale, California. As one of the hobby industry's oldest and most iconic multimillion-dollar companies, Cox is renowned for its production of miniature internal-combustion engines.2

The story

The company, originally named The L. M. Cox Manufacturing Co, Inc., was founded in 1945 by the machinist Roy Cox in Placentia, California. Cox grew up in and around his father's bicycle shop, and he developed an interest in mechanical devices. Cox's first products were wooden pop guns, produced in his home garage. Cox chose wood for his basic material, since metal was scarce during WW II.

When metals became readily available in the United States in 1947, Cox turned his attention to new products, beginning with a diecast metal car. This product was developed into a "whip car", a tethered vehicle which could be manually swung in a circle at high speed. Nitro- and gasoline-powered tether cars with.60 cubic inch miniature engines capable of speeds of 100 mph (160 km/h) were quickly becoming popular. Cox's first contribution to that growing hobby was a cast aluminum midget racer powered by a.09 and.15 engine by Cameron Brothers of Chino, California.

Cox Manufacturing enjoyed a large postwar growth due in part to its production of miniature model internal combustion engines and control line model aircraft, finally moving to a new factory in Santa Ana, California, in 1963. The factory started at 80,000 square feet (7432 square meters). Three expansions in a few years' time saw expansion to 225,000 square feet (20,903 square meters) and introduction of a line of slot cars, model rockets, HO scale model trains, and a full-sized, one-horsepower gasoline-powered chain saw.

Roy Cox retired in 1969, and he sold the company to the hobby conglomerate "Leisure Dynamics". Kites, toy walkie-talkies, and yo-yos were added to the Cox company products. A major step toward participation in the growing radio controlled hobby business happened in 1976 with the acquisition of the radio manufacturer "Airtronics".

By 1983, Leisure Dynamics was facing bankruptcy. Their engineer William Selzer, the designer of the "Babe Bee".049 aircraft engine, joined with a local businessman to purchase the Cox company. The new company, Aeromil Engineering Company, changed the name of the company from Cox Company to Cox Hobbies, Incorporated, in 1984. Growth of the company continued, but its factory space became fragmented since the operations were spread out over a number of leased buildings. This prompted a move to a consolidated facility in Corona, California, in 1990.

In January 1996, a leading model toy rocket manufacturer, Estes Industries, purchased Cox Hobbies, Incorporated, and relocated operations from Southern California to the Estes facility in Penrose, Colorado. This signaled a major change in marketing direction for the new company, now known as Cox Models. A great many new products were aimed towards a mass market and they were sold in large chain stores and discount stores.

In February 2009, Estes Industries sold its surplus Cox inventory to several private buyers in the U.S. and Canada, while the former Cox model train line was acquired by the Wm. K. Walthers company. Although MECOA approached Estes that same year to purchase Cox Hobbies in its entirety, Hobbico simultaneously expressed interest in acquiring Estes along with all its subsidiaries. Ultimately, instead of divesting the Cox brand separately, Estes-Cox was sold to Hobbico in late 2009.

In January 2010, Hobbico, based in Champaign, Illinois, became the official owner of the former Cox name, logo, and the Cox Models product line. Following the bankruptcy of Hobbico in 2018, the Model Engine Corp. of America (MECOA) purchased Cox Hobbies in its entirety from the Estes Corporation in 2019.

Read the full text

Through this acquisition, MECOA obtained ownership of the COX product line, trademarks, and logos. The transaction included all original molds, machinery, inventory, tooling, and engineering drawings. Over the following years, amid the disruptions of the COVID-19 pandemic, these assets were relocated from the former facility in Penrose, Colorado, to MECOA’s headquarters in Irwindale, California.

From Wikipedia’s article on Cox Models, shared under CC BY-SA 4.0.4

Products and brands

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Sources

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