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  2. Roller coaster wheel assembly - Wikipedia

    en.wikipedia.org/wiki/Roller_coaster_wheel_assembly

    Side friction wheels: positioned on a horizontal plane, either inside or outside of the rails. These hug the sides of the rail, keeping the train centered. Up-stop wheels (also known as underfriction wheels or up-lift wheels): positioned under the rails to keep the train from lifting off of the track.

  3. GateKeeper (roller coaster) - Wikipedia

    en.wikipedia.org/wiki/GateKeeper_(roller_coaster)

    The track is Azure Blue (dark blue) and Strata Blue (light blue), and the supports are white. [41] There are 102 track pieces, each weighing approximately 7,500 pounds (3,400 kg). [ 27 ] [ 30 ] Unlike Raptor and Rougarou, the track and supports are filled with sand to reduce the noise as the ride traverses the main entrance.

  4. Train wheel - Wikipedia

    en.wikipedia.org/wiki/Train_wheel

    A train wheel or rail wheel is a type of wheel specially designed for use on railway tracks. The wheel acts as a rolling component, typically press fitted onto an axle and mounted directly on a railway carriage or locomotive , or indirectly on a bogie (in the UK), also called a truck (in North America).

  5. Dual-tracked roller coaster - Wikipedia

    en.wikipedia.org/wiki/Dual-tracked_roller_coaster

    As a result, the side of the station that a train begins on is not the same side on which it returns. For each cycle, each train travels half the track. In less common configurations, a Möbius loop coaster train travels the entire length of the track before returning, such as with Twisted Colossus and West Coast Racers at Six Flags Magic Mountain.

  6. History of the railway track - Wikipedia

    en.wikipedia.org/wiki/History_of_the_railway_track

    Train wheels rolling over the spikes loosened them, allowing the rail to break free and curve upwards sufficiently that a car wheel could get beneath it and force the end of the rail up through the floor of the car, writhing and twisting, endangering passengers. These broken rails became known as "snake heads". [14]

  7. Guard rail (rail transport) - Wikipedia

    en.wikipedia.org/wiki/Guard_rail_(rail_transport)

    Guard rails at Diêu Trì railway station, Vietnam This curved track in Myanmar, near Pekon, includes a guard rail on the inside rail of the curve. In rail transport, guard rails or check rails are rails used in the construction of the track, placed parallel to regular running rail to keep the wheels of rolling stock in alignment to prevent derailment.