{"product_id":"3-12-inch-gauge-os-britannia-stock-code-3617","title":"3 1\/2 inch gauge OS \"Britannia\"","description":"\u003cp\u003eShigeo Ogawa was a life-long model engineer, building his first steam engine  on a flat-belt driven lathe in 1936 when he was nineteen years old. At the  request of an American friend he designed and built a 1.6cc engine for a model  aeroplane - such was its success that he formed a company using his initials as a  name and went on to produce 200 of the \"Type-1\" engine. The company, OS,  went on to become a world-leader in model IC engines, produced in two stroke, four stroke and  rotary forms for a wide variety of planes, cars and boats.\u003c\/p\u003e  \u003cp\u003eThis is a 3 1\/2 inch gauge OS-produced Britannia. It has been carefully  assembled but never steamed - it is in pristine condition, having spent its life  on a length of display track under a fitted perspex cover.\u003c\/p\u003e  \u003cp\u003eCoal-fired silver-soldered copper boiler, four-element superheater, working  pressure 80psi. Feed by injector and axle pump with auxiliary hand pump in the  tender. Twin safety valves.\u003c\/p\u003e  \u003cp\u003eGunmetal cylinders with piston valves actuated by Walschaert's valve gear  with pole reverser in cab. All axles and the connecting rods run on needle  roller bearings.\u003c\/p\u003e  \u003cp\u003eThe engine comes complete with a fitted perspex case, parts list, assembly  and operating booklets. OS still list the Britannia in their range of models  along with several other locomotives in both 3 1\/2, 5 and 7 1\/4 inch gauges.  Current price for the kit is £10499.\u003c\/p\u003e  \u003cp\u003eDimensions (including tender) Length 52 1\/2 inches Width 7 1\/2 inches Height  10 5\/8 inches Weight 110 pounds\u003c\/p\u003e  \u003cp\u003eBore 1 3\/16 inch Stroke 1 13\/16 inch\u003c\/p\u003e  \u003cp align=\"center\"\u003e\u003c\/p\u003e","brand":"Station Road Steam","offers":[{"title":"Default Title","offer_id":54019217588565,"sku":"3617","price":6250.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1023\/0094\/2677\/files\/3617-1.webp?v=1779903022","url":"https:\/\/stationroadsteam.com\/products\/3-12-inch-gauge-os-britannia-stock-code-3617","provider":"Station Road Steam","version":"1.0","type":"link"}