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An axlebox, also known as a journal box in North America, is the mechanical subassembly on each end of the axles under a railway wagon, coach or locomotive; it contains bearings and thus transfers the wagon, coach or locomotive weight to the wheels and rails; the bearing design is typically oil-bathed plain bearings on older rolling stock, or roller bearings on newer rolling stock.
Also like the P Motors they used advanced nose suspended traction motors and the R-2s were some of the first North American locomotives to make use of the C-C wheel arrangement, which later became the standard for diesel electric road freight. The first R Motor was developed as a response to the Kaufman Act which banned steam locomotive use ...
A ZQDR-410 traction motor (the large, dark component on the axle with small ventilation holes) A traction motor is an electric motor used for propulsion of a vehicle, such as locomotives, electric or hydrogen vehicles, or electric multiple unit trains.
Early models were usually powered by a gasoline engine, with either a mechanical drive train or a generator providing electricity to traction motors ("gas-electrics"). In later years, it was common for doodlebugs to be repowered with a diesel engine. Doodlebugs sometimes pulled an unpowered trailer car, but were more often used singly.
The converters are water cooled and have individual inverters for each traction motor (Bombardier MITRAC DR 3700F series). [ citation needed ] Power at rail is increased to 7,500 hp (5,600 kW) and top speed is increased to 125 miles per hour (201 km/h), [ 8 ] though NJ Transit limits them to 100.
In 1963 the New York, New Haven and Hartford Railroad stepped in. The New Haven was cash-strapped but in need of power to replace 1910s-era boxcabs on its electrification between New York and New Haven. The N&W sold all 12 locomotives, including the slug as a parts source, for $300,000. The New Haven designated the locomotives EF-4 and ...
However, the EF-4 "Little Joes", which were also retrofitted, were more often seen leading diesel electrics than boxcabs, which had by then been largely relegated to the role of helper or bank engine. The maximum speed of an EF-1 as built was 35 miles per hour (56 km/h). Higher speeds led to excessive strain on the traction motor armatures.
Northport Traction Company was a trolley service in the Town of Huntington in New York. It ran from 1902 to 1924 and served East Northport and Northport, New York . The company only had one line throughout its history which ran from Northport (LIRR station) to Northport Harbor, at what is today Cow Harbor Park.