{"product_id":"swan-twin-cyinder-vertical-egine-stock-code-3430","title":"Swan twin cyinder vertical egine","description":"\u003cp align=\"left\"\u003eA newly-completed example of a Swan \"Double Two\"  launch engine - a rare thing, I've only ever seen two running engines. This one  passed through a couple of years ago as a set of castings and a very nicely made  crankshaft, it's come back as a complete engine which runs like a sewing machine  on air.\u003c\/p\u003e  \u003cp align=\"left\"\u003eThe design was for a powerful engine up to a serious job of work  in a launch - it's a simple expansion twin, cast iron cylinders, slide valves  with Stephenson's reversing gear and a five bearing steel crank. The short  pillars at either end were originally intended for pumps, the builder has used  one to mount a mechanical lubricator - this has a drive to it but has yet to be  plumbed to the cylinders.\u003c\/p\u003e  \u003cp align=\"left\"\u003eDespite its nautical leanings, I think it could be used as the  basis for an interesting 7 1\/4 inch gauge \"Sentinel\" type locomotive.\u003c\/p\u003e  \u003cp align=\"left\"\u003eLength 21 inches\u003cbr\u003e  Height 15 inches\u003cbr\u003e  Flywheel 5 inch diameter\u003c\/p\u003e  \u003cp align=\"center\"\u003e\u003c\/p\u003e","brand":"Station Road Steam","offers":[{"title":"Default Title","offer_id":54010173194581,"sku":"3430","price":1250.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1023\/0094\/2677\/files\/3430-1.webp?v=1779900744","url":"https:\/\/stationroadsteam.com\/products\/swan-twin-cyinder-vertical-egine-stock-code-3430","provider":"Station Road Steam","version":"1.0","type":"link"}