{"product_id":"5-inch-gauge-y6b-stock-code-3730","title":"5 inch gauge Y6B","description":"\u003cp\u003eThis is probably too big for your shed, certainly more than you and your best  friend could lift and will cause much consternation at the club when completed,  worried about the wear and tear on their loading ramps and steaming bays.    \u003c\/p\u003e\u003cp\u003eThe prototype Y6Bs were the last in an evolutionary line of Mallets developed  by the N\u0026amp;W, collossal machines weighing in 430 tons with tender, producing  127 000 pounds of tractive effort (with a further 15% boost available by  simpling the compound cylinders for starting), 114 feet long and carrying 22 000  gallons of water.    \u003c\/p\u003e\u003cp\u003eThis model was started twenty years ago by a prolific engineer who already  had several locomotives to his credit - having completed one of Don Young's  \"Lucky 7\"s in 3 1\/2 inch gauge (which is currently awaiting test in  the workshop) he obviously got bitten by the American bug in a big way. A  \"Lucky 7\" is a large engine, five feet long and a couple of  hundredweight (which for a 3 1\/2 inch gauge engine is going it some). However  his next project, this Norfolk \u0026amp; Western Y6B Mallet, was in a completely  different league - the general arrangement drawing that Sam and Steve are  holding up in the photograph below is full-sized for 5 inch gauge.    \u003c\/p\u003e\u003cp\u003eChassis is at a rolling stage - it is built, like the originals, in two parts  with a pinned joint connecting them. The builder produced his own patterns for  the driving, bogie and tender wheels which have all been machined.    \u003c\/p\u003e\u003cp\u003eBoiler is in steel, the correct mterial was bought and sent out for forming  before being professionally welded together - it's a super job, beautifully made  (and a two man lift). The 16 gauge drawn copper tubes are loosely fitted and  require expanding.    \u003c\/p\u003e\u003cp\u003eThe piston valve cylinders have been part-fabricated in bronze, there are  three safety valves and a pair of reflex water gauges part-fabricated.    \u003c\/p\u003e\u003cp\u003eSmokebox is part-built, along with a chimney, there is a quantity of  platework including boiler cladding and some cab work.    \u003c\/p\u003e\u003cp\u003eThe project comes with a large quantity of the builder's drawings, notes and  photographs in several folders - he was a fastidious man, there is a huge amount  of information both about the design and work completed to date, neatly written  in longhand in books and books of notes.    \u003c\/p\u003e\u003cp\u003eNot a quick or easy build from here, however it is a viable project that  would produce a very large, extremely rare engine. And yes, I'd like a go when  it's finished please.    \u003c\/p\u003e\u003cp\u003eLength 66 inches (locomotive - the tender will add another three feet)\u003cbr\u003e  Bore LP 3 1\/4 inch, HP 2 1\/16 inch\u003cbr\u003e  Stroke 2 3\/8 inch\u003cbr\u003e  Boiler 43 inches long, 8 1\/2 inch diameter    \u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003ccenter\u003e\u003c\/center\u003e","brand":"Station Road Steam","offers":[{"title":"Default Title","offer_id":54019245834581,"sku":"3730","price":1950.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1023\/0094\/2677\/files\/3730-1.webp?v=1779903292","url":"https:\/\/stationroadsteam.com\/products\/5-inch-gauge-y6b-stock-code-3730","provider":"Station Road Steam","version":"1.0","type":"link"}