{"product_id":"set-guy-compound-launch-castings-stock-code-3699","title":"Set Guy compound launch castings","description":"\u003cp\u003eA set of castings, mainly in iron and gunmetal, for a replica late nineteenth century Guy compound launch  engine. I bought these from my friend Bob nearly ten years ago – he'd had  them for twenty years then, acquired from a local engineering company that had  closed down on the demise of its owner.\u003cspan style=\"mso-spacerun: yes\"\u003e \u003c\/span\u003eSome  machining had been done, to a high standard as might be expected from the  owner's occupation, including the boring of the cylinders – however most of  the castings are a they arrived from the foundry.\u003co:p\u003e  \u003c\/o:p\u003e  \u003c\/p\u003e  \u003cp\u003eIn the last ten years they have sat in another friend's workshop – he has  now had one of those painful rationalisations we all need now and again, whereby  you take a long hard look at man-hours committed to planned projects versus  years left to you in this life…\u003co:p\u003e  \u003c\/o:p\u003e  \u003c\/p\u003e  \u003cp\u003eThe engine is a slide valve compound, the crank runs on roller bearings to  main and big end bearings. Reversing is by Stephenson's gear – whilst there  are no drawings with the engine, there are several good sources of information  to derive a workable set of dimensions for the valve gear. I would particularly  recommend Don Ashton's excellent book “Design Procedures for Walschaert's  and Stephenson's Valve gear”.\u003co:p\u003e  \u003c\/o:p\u003e  \u003c\/p\u003e  \u003cp\u003eWeight of castings 200 pounds\u003cbr\u003e  Bore 4 7\/8 + 2 3\/8 inches\u003cbr\u003e  Stroke 4 inches\u003cspan style=\"font-family:\" book antiqua\u003e\u003co:p\u003e  \u003c\/o:p\u003e  \u003c\/span\u003e\u003c\/p\u003e    \u003cp\u003e\u003c\/p\u003e\u003ccenter\u003e\u003c\/center\u003e","brand":"Station Road Steam","offers":[{"title":"Default Title","offer_id":54019655303509,"sku":"3699","price":750.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1023\/0094\/2677\/files\/3699-1.webp?v=1779905842","url":"https:\/\/stationroadsteam.com\/products\/set-guy-compound-launch-castings-stock-code-3699","provider":"Station Road Steam","version":"1.0","type":"link"}