{"product_id":"undertype-portable-engine-stock-code-6275","title":"Undertype portable engine","description":"\u003cp align=\"left\"\u003eA finely built undertype semi-portable engine of imposing size -  highly detailed, fit and finish of the motionwork is excellent. We think this  one was a commercial build - no maker's plate on it, but possibly by a builder  of full-sized engines - in the early twentieth century. It looks to have been  little used - mechanically it's in excellent condition, without signs of bodgery  or other unlooked for messing with over the years - all the nuts still have  crisp edges, castings are all still in good condition, the engine turns over  smoothly with little sign of wear in the bearings.  \u003c\/p\u003e    \u003cp align=\"left\"\u003eIt has lost its chimney - this would be a medium height job, not  as tall as a portable engine chimney - pressure gauge, studs and nuts securing  the dome. There is a flywheel with it which has been bored to fit the  crankshaft, but its proportions are too heavy - it needs a straight spoke  flywheel with thinner rim and possibly slightly larger diameter. Valve gear is  Stephenson's, this has been set up to run in one direction only - there is a  weighshaft, but no lifting gear for the link.  \u003c\/p\u003e    \u003cp align=\"left\"\u003eBoiler is in steel, unusually fitted with a superheater - two  superheater flues, a copper superheater pipe dives down one, makes a couple of  circuits around the top of the firebox, then back up t'other, effectively an  early form of radiant superheater. Stroudley type regulator, there is a  mechanical boiler feed pump.  \u003c\/p\u003e    \u003cp align=\"left\"\u003eEngine itself looks to be a compound, slide valves actuated by  Stephenson's gear, twin mechanical lubricator feeding direct to each valve  chest. Watt type governor, fitted horizontally driven by belt and bevel gears.  Draincocks at the front for cylinders and valve chests.  \u003c\/p\u003e    \u003cp align=\"left\"\u003eI've put a lot of pictures of this one up, it's a particularly  fine model (currently enhancing our hall at home, opposite the Bentley BR2).  Paintwork is old, in nice patinated condition - it really wants nothing more  than a rub over with some linseed oil  \u003c\/p\u003e    \u003cp align=\"left\"\u003eLength 34 inches\u003cbr\u003e  Height 17 inches\u003cbr\u003e  Weight est 250 pounds  \u003c\/p\u003e    \u003cp align=\"center\"\u003e\u003c\/p\u003e","brand":"Station Road Steam","offers":[{"title":"Default Title","offer_id":54019805839701,"sku":"6275","price":2950.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1023\/0094\/2677\/files\/6275-1.webp?v=1779907460","url":"https:\/\/stationroadsteam.com\/products\/undertype-portable-engine-stock-code-6275","provider":"Station Road Steam","version":"1.0","type":"link"}