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Company Outline

address 6-15, 3-Chome Imagawa Higashisumiyoshi-ku Osaka 546-0003 Japan

Telephone +81-6-6702-0225
Fax +81-6-6704-2722
E-Mail e-info@os-engines.co.jp
O.S. is one of the world leading companies devoted solely to the manufacture of model engines and Live Steam Locomotives. The high standards of skilled craftsmanship that have been developed through the 80 years of O.S. engine production history introduced the world's first model rotary engine, and, more recently, Electronic Fuel Injection system engine ranging from the small displacement .10 engine up to the larger Five cylinder radial four-stroke 3.0 engine. For the production of O.S. engines, modern precision machinery and carefully selected top quality materials are employed to ensure consistent performance and long life. O.S. will always seek "quality and performance" with worldwide users.


Shigeo Ogawa (1917-1992)

Born in 1917 in Tajimi City, Gifu Prefecture. Highly fond of tinkering with machines from childhood. Advances to an industrial school to learn actual technology where engineering fundamentals were acquired. Received a special award at a student science model fair, which becomes the start of model engine building. Received the FAI Paul Tissandier Diploma in 1984, the highest honor in the aviation world. Also widely known among fans in Japan as an avid live steam locomotive enthusiast.

Company History

1936.11 Established Ogawa Seisakusho in Tanabe Honmachi, Higashisumiyoshi-ku, Osaka, and started manufacturing and selling model engine TYPE-1.
1941.12 Established Ogawa Seiki Co., Ltd. in Kumata-cho, Higashisumiyoshi-ku, Osaka
1954 Started production of model radio control equipment
1957 Relocated the head office and factory to Hirano Baba-cho, Higashisumiyoshi-ku, Osaka (currently Imagawa 3-chome)
1970 Successful mass production of rotary engine for models
1973 Development of Japan's first scavenging glow engine
1976 Started mass production of 4-cycle engine for models
1978 Started manufacturing and selling live steam locomotives
1981.2 Acquired the planned site for the Nara Factory in Ando Town, Nara Prefecture.
1983.3 Construction of Nara factory
1986.11 50th anniversary of founding
1990 Developed a 4-cycle engine with a supercharger for models
1993.12 Became a member of Futaba Corporation Group.
1997.4 Completion of O.S. field (R / C car circuit mini SL running field) on the premises of the Nara factory
1998 LA series, 12LD wins GOOD Design Award
2000 Launched the first model engine equipped with an electronically controlled fuel injection system
2003 Completed factory building and engine test building at Nara factory
2006 70th anniversary of founding
2007 O.S. field complete renovation
2007.4 Announced the first bioethanol engine and dedicated bioethanol fuel for model engines that are environmentally friendly.
2009.2 Obtained certification after undergoing expanded examination with ISO14001 as the Futaba Group site
2009 Launched 2-stroke 55cc gasoline engine GT55
2011 Ogawa Seiki announces first O.S. motor, glow fuel
2014.4 Launched the industry's first glow gasoline engine
2014.11 80th anniversary of founding
2018 Launched GF40U-FI, an electronically controlled fuel injection device. specification gasoline engine for fixed-wing UAVs
2020 Launched 33cc Range Extender for Drone
2021.3 Discontinued production and sale of steam locomotives

2022.02.03 Current