{"product_id":"4-inch-scale-case-45hp-traction-engine-stock-code-7093","title":"4 inch scale Case 45hp traction engine","description":"\u003cp align=\"left\"\u003e   \u003cfont color=\"#FF0000\"\u003eWe sold this one back in 2010, it's recently come back  along with a 4 inch Foster from a long-time customer of ours who's bought an 8  ton Burrell roller (lucky man). Completed in 2008 the engine has been rallied  regularly since - it's coming up for a repaint, there's some wear in the valve  gear but it still steams and runs well.\u003c\/font\u003e\u003c\/p\u003e\u003cp align=\"left\"\u003e\u003cfont color=\"#FF0000\"\u003ePictures  below were taken this morning, words are from last time it was here in 2010.\u003c\/font\u003e  \u003c\/p\u003e\u003cp align=\"left\"\u003eYou've got to admire anybody with a name like Jerome Increase  Case, I think it's a transtlantic version of Isambard Kingdom Brunel. Like John  Fowler over here, Case started out manufacturing agricultural machinery in the  mid nineteenth century, before realising that a prime mover with a bit more go  than a farm labourer was required. Case built his first traction engine in 1869,  by the time production stopped they'd built 36000 (and you thought Aveling \u0026amp;  Porter built a lot of steam engines).\u003c\/p\u003e  \u003cp align=\"left\"\u003eThis is a Case 45hp traction engine, based on the engines  produced at the beginning of the twentieth century. A rarely seen model in this  country, it's a large engine with a good deal of technical interest (and fun to  drive to boot). The model was completed in 2008 to the Ralph Andres design  published in the USA - castings are available in this country from John Rex.\u003c\/p\u003e  \u003cp align=\"left\"\u003eSteel boiler with expanded tubes by Bell Boilers, working  pressure 100psi. Feed by injector and half-speed double-acting pump (I know,  \"so why isn't that the same as a crank speed pump on a Burell\" I hear  you ask. In terms of output it is, but by gearing the pump down and then using  both strokes to pump water you get a much smoother delivery, without hammering  when running along on the road - pains me to say it, but the Americans got it  right here). Nabic pop-type safety valve with a \"takes no prisoners\"  action - we had four takes on the video until Karl stopped flinching. People  seem to make a great fuss over \"proper\" pop valves, I think they're a  wonderful invention and would take one every time over a wretched Ramsbottom  valve that opens at working pressure then needs to be beaten senseless with the  shovel until it finally stops leaking at about 50psi.\u003c\/p\u003e  \u003cp align=\"left\"\u003eCylinder is cast iron with slide valve actuated by Woolf valve  gear - looks to me like another radial \"Hackworth with a twist\" type  mechanism, but no doubt some scholar of valve gears will give chapter and verse  on it's particular strengths. Mechanical lubricator. Regulator is by one of the  excellent stainless steel ball valves which are leak-proof, cheap to replace,  silky smooth in action... I could go on, suffice to say they're what I've fitted  on a batch of new locomotives currently in build in the workshop and, given  sufficient available space, wouldn't use anything else.\u003c\/p\u003e  \u003cp align=\"left\"\u003eDownstairs there's a single speed transmission with differential  - this is where things start to get seriously different to what we're used to.  There's a clutch in the flywheel, actuated by the right hand lever on the  dashboard. Middle one is regulator (\"throttle\" I suppose we should  call it), so you start the engine running then engage the clutch. Sounds awkward  described, in practice the clutch is a delight to use, progressive in action and  quick to uncouple (which, given the size of the machine, is probably as well).\u003c\/p\u003e  \u003cp align=\"left\"\u003e\u003ca href=\"http:\/\/www.youtube.com\/watch?v=joGZ9n5bqVc\u0026amp;feature=channel_page\" target=\"_blank\"\u003eThere's  a clip of Karl next door taking a break from fixing cars to have a run round our  car park here.\u003c\/a\u003e\u003c\/p\u003e  \u003cp align=\"left\"\u003eLength 82 inches\u003cbr\u003e  Width 32 inches\u003cbr\u003e  Height 41 inches\u003cbr\u003e  Weight 1\/2 ton\u003c\/p\u003e","brand":"Station Road Steam","offers":[{"title":"Default Title","offer_id":54020178805077,"sku":"7093","price":9200.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1023\/0094\/2677\/files\/7093-1.webp?v=1779911699","url":"https:\/\/stationroadsteam.com\/products\/4-inch-scale-case-45hp-traction-engine-stock-code-7093","provider":"Station Road Steam","version":"1.0","type":"link"}