founded december 10 1941 1941 12 10 in higashisumiyoshi ku osaka japan founder shigeo ogawa headquarters higashisumiyoshi ku osaka japan key people seiichi arata total assets 90 000 000 jpy 2012 number of employees 54 2012 parent futaba corporation website www.os engines.co.jp o.s. engines is a japanese model engine manufacturer . the company was founded in 1936 by machinist shigeo ogawa ogawa shigeo in the japanese surname first tradition for the production of model steam engines . the name of the firm could have either originated from the traditional japanese family name first tradition being the source of the os name or from the firm s actual japanese name ogawa seisakusho . at the suggestion of american buyer paul houghton ogawa tooled up for his first gasoline powered engine the 1.6 cc o.s. type 1 of which 200 units were produced and exported under the brand name pixie . after world war ii ogawa seisakusho expanded to produce the max line of engines which won acclaim for their performance and durability . o.s. 25 fsr 1977 legendary part of o.s. history shown with muffler in 1976 os pioneered the field of modern four stroke glow plug ignition model engines with the fs 60 10 cm3 displacement exposed valve gear engine and has been one of the top producers of four stroke glow plug ignition model engines worldwide ever since . today o.s. engines produces a much larger line of engines that includes the only available wankel rotary aircraft engine which was first introduced in 1970 in cooperation with graupner of germany . 1 since graupner s demise in 2012 o.s. now makes this 4.9 cm3 displacement engine on their own still under license from nsu . the 1980s brought increasing competition which increased across the 1990s and into the 21st century . o.s. is now a leading manufacturer of single and multi cylinder model aircraft engines ranging from the small .10 la two stroke to the ff 320 four stroke giant scale flat four cylinder and the fr7 420 sirius7 7 cylinder radial engine giant scale radial . o.s. engines in current production include the .21 tm the .18 tz the .46 ax and many others . o.s. also makes required accessories for their engines including glow plugs exhausts mufflers and air filters . o.s. has also extended their expertise to model cars offering many reliable and powerful engines for these vehicles . typical engines include os 18 cv r and os 30vg . four strokes include fs26 c s 0.26 ci displacement meant to replace 0.12 0.15 two strokes and fs40 c s 0.40 ci displacement meant to replace 0.21 and up two strokes with an updated fs26 c s ii currently out of production . it is very easy to decode some facts from the engine name . in the above mentioned four stroke models the c means car . this is to avoid confusing them with the aircraft engines they are based on . additionally an x in the name denotes a recoil start . o.s. engines main competitor for both two and four stroke model engines is yamada engines ys also designed and produced in japan with the saito seisakusho firm being a stronger rival than the ys firm in volume production of popular four stroke model engines . o.s. has also produced model steam locomotives . 2 see also edit model engines live steam references edit chinn peter 1986 . model four stroke engines . wilton ct usa air age publishing . pp. 74 81 . isbn 0 911295 04 6 . o.s. live steam locomotive external links edit o.s. engines mfg. co. ltd. japan . in english o.s engines home page saito engines technopower engines radial engines yamada engines further information . retrieved from https en.wikipedia.org w index.php title o.s. engines & oldid 724851655 categories wankel enginescompanies of japanjapanese brandsradio controlmodel engines navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a bookdownload as pdfprintable version languages italiano norsk bokm lsuomisvenska edit links this page was last modified on 11 june 2016 at 23 05 . text is available under the creative commons attribution sharealike license ; additional terms may apply . by using this site you agree to the terms of use and privacy policy . wikipedia is a registered trademark of the wikimedia foundation inc. a non profit organization . privacy policy about wikipedia disclaimers contact wikipedia developers cookie statement mobile view