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One of six 6 ft 8 in (2.03 m) driving wheels belonging to 60163 Tornado. Driving wheels are generally larger than leading or trailing wheels. Since a conventional steam locomotive is directly driven, one of the few ways to ' gear ' a locomotive for a particular performance goal is to size the driving wheels appropriately. [8] Freight ...
The earlier, Type-A Boxpok wheels had a fewer number of larger holes. The later, Type-B Boxpok wheels had more, smaller holes. The boxpok drivers proved an important modification in high-speed service. Many railroads employed Boxpok disc drivers during the 1930s and 1940s including the Union Pacific on their Big Boys. Photos
An F4 would output between 11,425 and 13,104lbs at 25mph (761-873hp). For example, a locomotive might be rated as 7P6F, a seven for passenger, six for freight. If the ratings were equal...
From tank engines and narrow gauge locomotives, to large freight haulers and those pulling high speed express trains, each and every type of steam locomotive operates differently and has a wheel set to match its purpose.
May 20, 2022 · The two general points I would draw is that more than 6 driving wheels is good for shifting heavy freight, and a 4 wheel pony truck at the front is good at high speed.
4-8-8-4 Steam Locomotive. The 4-8-8-4 steam locomotive has four leading wheels, two sets of eight driving wheels, and four trailing wheels. They were designed to haul heavy freight in mountainous regions. This locomotive had hinged frames to allow them to negotiate curves.
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The wheel arrangement is a good indication of the intended use of the locomotive. The more driving wheels, typically more reactive effort = pulling power. The more wheels on the front bogie, typically means a smoother ride at speed because it reduces hunting and guides the engine into the curve.
