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Collects steam at the top of the boiler (well above the water level) so that it can be fed to the engine via the main steam pipe, or dry pipe, and the regulator/throttle valve. [2] [5] [6]: 211–212 [3]: 26 Air pump / Air compressor Westinghouse pump (US+) Powered by steam, it compresses air for operating the train air brake system.
The size of engines depends on the scale and can vary from 700 mm (27.6 in) tall for the largest rideable live steam scales such as 1:4, down to matchbox size for the smallest: Z-scale (1:220) or T scale (1:450). A typical HO (1:87) engine is 50 mm (1.97 in) tall, and 100
HO or H0 is a rail transport modelling scale using a 1:87 scale (3.5 mm to 1 foot). It is the most popular scale of model railway in the world. [1] [2] The rails are spaced 16.5 millimetres (0.650 in) apart for modelling 1,435 mm (4 ft 8 + 1 ⁄ 2 in) standard gauge tracks and trains in HO.
Cox HO-Scale Trains Resource Details the 1970s line of COX model trains in HO-scale, includes online catalog resource. Cox Engine Forum Members include current and past employees, Cox family members, and experienced modelers and collectors. Also includes a resource for catalogs, product instruction manuals, and other documents.
A drawing of the Great Northern Class L-1 2-6-6-2 (engine only) in HO scale was published in Model Railroader in October 1953, followed by article on building the engine in April 1955. [ 70 ] Mantua Metal Products marketed models of both tender and tank versions of the 2-6-6-2 type.
Some build their own custom track layouts, including city street circuits, or countryside road circuit with scenery, some combined with an electric train layout. Others race in competition at the few remaining commercial HO scale tracks. The Aurora Thunderjet (or T-jet as it is informally called) was probably the best-selling slot car in history.
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The 37.5 mm length is not derived by a certain scale ratio. While HO scale is a 1:87 scale (3.5 mm to 1 foot), resulting in a 16.5 mm (0.65 in) gauge from real life prototype 1,435 mm (4 ft 8 + 1 ⁄ 2 in) standard gauge standard gauge. Conversely, modeling standard gauge in Lego trains would yield a scaling of (37.5:1435 =) 1:38.3.