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The actual overturning speed of a train is much higher than the limits set by the speed formula, which is largely in place for passenger comfort. There is no hard maximum unbalanced superelevation for European railways, some of which have curves with over 11 inches (280 mm) of unbalanced superelevation to permit high-speed transportation. [15]
GE steam turbine locomotives; Gov. Stanford; Grand Trunk Western 5629; Great Northern 2507; Great Northern 2584; Great Northern F-8; Great Northern H-5; Great Northern M-1; Great Northern O-1; Great Northern P-1; Great Northern P-2; Great Northern Q-1; Great Northern S-1; Great Northern S-2; Great Smoky Mountains Railroad 1702
The Milwaukee F7s are accepted as the fastest steam locomotives by a different measure—scheduled speed between stations. In 1939, shortly after they were introduced into passenger service, the Twin Cities Hiawatha schedule was modified such that the engines would need to run the 78.3 mi (126.0 km) between Portage and Sparta, Wisconsin in 58 ...
They also sported the most heating surface of any two-cylinder steam locomotive, with a combined heating surface of 9,654 square feet (896.9 m 2). Despite their overall success, their long-wheelbase made it difficult to maintain a proper counterbalancing scheme as the drivers wore unevenly in service.
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The highest posted speed limit in the country is 85 mph (137 km/h) and can be found only on Texas State Highway 130, a toll road that bypasses the Austin metropolitan area for long-distance traffic. The highest speed limit for undivided roads is 75 mph (121 km/h) in Texas. Undivided road speed limits vary greatly by state.
Western Maryland Railway Steam Locomotive No. 202: 1984 NRHP Hagerstown, MD: MI-01 Pere Marquette Railway Locomotive No. 1223: 2000 NRHP Grand Haven, MI: MI-02 Nahma and Northern Railway Locomotive No. 5: 2005 NRHP Nahma Township, MI: MI-03 Pere Marquette Railway Steam Locomotive No. 1225: 2004 NRHP Owosso, MI: MN-01 Soo Line Locomotive 2719: 4 ...
Most powerful steam locomotive ever static tested. PRR S1: Pennsylvania Railroad: 6100 Altoona Works: 1939 Steam 6-4-4-6: 487 tonnes (537 short tons) 340 kilonewtons (76,403 lbf) 5,369 kilowatts (7,200 hp) Fast passenger steam locomotive; the magazine Popular Mechanics cites 1941 a speed of 133.4 mph (214.7 km/h) PRR S2: Pennsylvania Railroad: 6200