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Change Of Gauge (other)
Change of gauge is the process of converting a railway from one rail gauge to another. Change of gauge or gauge change may also refer to: *Change of gauge (aviation), change of aircraft without changing the flight number * Break-of-gauge a location where two railroad lines of different gauge meet * Bogie exchange, a system for operating railway wagons on two or more gauges by switching bogies *Variable gauge, a system using adjustable wheel sets where the gauge is altered by driving the train through a gauge changer *Dual gauge, the use of additional rails are laid to accommodate two different gauges on the same track * Track gauge conversion, replacing a railway track of one track gauge with a railway track of another track gauge See also *Gauge fixing In the physics of gauge theories, gauge fixing (also called choosing a gauge) denotes a mathematical procedure for coping with redundant degrees of freedom in field variables. By definition, a gauge theory represents each physi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Track Gauge Conversion
Gauge conversion is the changing of one railway track gauge (the distance between the running rails) to another. Sleepers If tracks are converted to a narrower gauge, the existing sleepers (ties) may be used. However, replacement is required if the conversion is to a wider gauge. Some sleepers may be long enough to accommodate the fittings of both existing and alternative gauges. Wooden sleepers are suitable for conversion because they can be drilled for the repositioned rail spikes. Being difficult to drill, concrete sleepers are less suitable for conversion. Concrete sleepers may be cast with alternative gauge fittings in place, an example being those used during the conversion of the Melbourne–Adelaide railway from to . Steel sleepers may have alternative gauge fittings cast at production, may be drilled for new fittings or may be welded with new fittings. Structures Conversion from a narrow to a wider gauge may require enlargement of the structure gauge of the bridges, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Change Of Gauge (aviation)
In air transport, a change of gauge for a passenger or cargo flight is a change of aircraft that retains the same flight number."Final Report on Airline Customer Service Commitment" , Report AV-2001-020, 12 February 2001, Office of Inspector General, The term is borrowed from the rail transport practice of gauge change. When a feeder flight connects to a flight on a larger aircraft, this is sometimes called a funnel flight. An example of a change of gauge flight from a larger aircraft to a smaller aircraft during the early 1970s can be found in the |
Break-of-gauge
With railways, a break of gauge occurs where a line of one track gauge (the distance between the rails, or between the wheels of trains designed to run on those rails) meets a line of a different gauge. Trains and rolling stock generally cannot run through without some form of conversion between gauges, leading to passengers having to change trains and freight requiring transloading or transshipping; this can add delays, costs, and inconvenience to travel on such a route. History Break of gauge was a common issue in the early days of railways, as standards had not yet been set and different organizations each used their own favored gauge on the lines they controlled—sometimes for mechanical and engineering reasons (optimizing for geography or particular types of load and rolling stock), and sometimes for commercial and competitive reasons (interoperability and non-interoperability within and between companies and alliances were often key strategic moves). Various solutions o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bogie Exchange
Bogie exchange is a system for operating railway wagons on two or more gauges to overcome difference in the track gauge. To perform a bogie exchange, a car is converted from one gauge to another by removing the bogies or trucks (the chassis containing the wheels and axles of the car), and installing a new bogie with differently spaced wheels. It is generally limited to wagons and carriages, though the bogies on diesel locomotives can be exchanged if enough time is available. Wagons and carriages Bogie wagons can have their gauge changed by lifting them off one set of bogies and putting them back down again on another set of bogies. The pin that centres the bogies and the hoses and fittings for the brakes must be compatible. A generous supply of bogies of each gauge is needed to accommodate the ebb and flow of traffic. The bogies and wagons also need to have standardized hooks, etc., where they may be efficiently lifted. The two wheel sets on four-wheel wagons can be change ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Variable Gauge
A variable gauge system allows railway vehicles in a train to travel across a break of gauge between two railway networks with different track gauges. For through operation, a train must be equipped with special bogies holding variable gauge wheelsets containing a variable gauge axle (VGA). The gauge is altered by driving the train through a gauge changer or gauge changing facility. In effect, the track widens or narrows. As the train passes through the gauge changer, the wheels are unlocked, are moved closer together, or further apart, and are then re-locked. Installed variable gauge systems exist within the internal network of Spain, and are installed on international links between Spain/France (Spanish train), Sweden/Finland (Swedish train), Poland/Lithuania (Polish train) and Poland/Ukraine (Polish train). A system for changing gauge without the need to stop is in widespread use for passenger traffic in Spain, for services run on a mix of dedicated high-speed lines (using St ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dual Gauge
In railway engineering, "gauge" is the transverse distance between the inner surfaces of the heads of two rails, which for the vast majority of railway lines is the number of rails in place. However, it is sometimes necessary for track to carry railway vehicles with wheels matched to two different gauges. Such track is described as dual gauge – achieved either by addition of a third rail, if it will fit, or by two additional rails. Dual-gauge tracks are more expensive to configure with signals and sidings, and to maintain, than two separate single-gauge tracks. It is therefore usual to build dual-gauge or other multi-gauge tracks only when necessitated by lack of space or when tracks of two different gauges meet in marshalling yards or passenger stations. Dual-gauge tracks are by far the most common configuration, but triple-gauge tracks have been built in some situations. Background The rail gauge is the most fundamental specification of a railway. Rail tracks and whee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_track%2C_South_Australian_Railways.jpg "Click for more on -> Dual Gauge")