{"product_id":"5-inch-gauge-polly-ok-caroline-stock-code-6399","title":"5 inch gauge \"Polly O\u0026K Caroline\"","description":"\u003cp align=\"left\"\u003eA new, unsteamed \"Polly \"Caroline\", the inspired  makeover of their well-proved chassis and boiler into an Orenstein \u0026amp;  Koppel-inspired tank engine. Until this year I'd have said it was the best  looking \"Polly (I'm a bit of an O\u0026amp;K fan), however with the recent appearance  of their \"Trojan\" it's a close run thing - I think both engines look  super.\u003c\/p\u003e  \u003cp align=\"left\"\u003eHaving built a \"Polly IV and steamed it a handful of times, the  original owner embarked on this one as his follow up project. Unfortunately he  didn't live to see the fruits of his labours, the engine was finished by members  of his club on behalf of his family - the engine has never had a fire in it and  remains in ex-works condition.\u003c\/p\u003e  \u003cp align=\"left\"\u003eSilver soldered copper boiler, 90psi working pressure, feed by  axle pump and injector. Cast iron cylinders with slide valve actuated by what's  adervtised as \"Orenstein \u0026amp; Koppel patent valve gear\" but which  looks for all the world like Marshall gear - I'm sure somebody will put me right  on the subtle differences.\u003c\/p\u003e  \u003cp align=\"left\"\u003e\u003ca href=\"http:\/\/www.pollymodelengineering.co.uk\/sections\/polly-locomotive-kits\/caroline.asp\" target=\"_blank\"\u003eThere's  a full technical specification on the \"Polly Engineering website here\u003c\/a\u003e.\u003c\/p\u003e  \u003cp align=\"center\"\u003e\u003c\/p\u003e","brand":"Station Road Steam","offers":[{"title":"Default Title","offer_id":54019252715861,"sku":"6399","price":4750.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1023\/0094\/2677\/files\/6399-1.webp?v=1779903340","url":"https:\/\/stationroadsteam.com\/products\/5-inch-gauge-polly-ok-caroline-stock-code-6399","provider":"Station Road Steam","version":"1.0","type":"link"}