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  2. Breather switch - Wikipedia

    en.wikipedia.org/wiki/Breather_switch

    A breather switch, expansion joint, or adjustment switch is an intentional gap in railway tracks to allow for thermal expansion in long sections of otherwise unbroken rail. . They are placed between very long sections of continuous welded rail or at the transition from continuous welded rail to jointed track, and commonly in the vicinity of bridges, viaducts and tunnels where the ...

  3. Rail stressing - Wikipedia

    en.wikipedia.org/wiki/Rail_stressing

    Buckled CWR track. Stressing is a rail engineering process. It is used to prevent heat and cold tension after installation of continuous welded rail (CWR). Environmental heat causes CWR to expand and therefore can cause the fixed track to buckle. Environmental cold can lead to the contraction of the fixed railway track causing brittleness and ...

  4. Turnbuckle - Wikipedia

    en.wikipedia.org/wiki/Turnbuckle

    A turnbuckle, stretching screw or bottlescrew is a device for adjusting the tension or length of ropes, cables, tie rods, and other tensioning systems. It normally consists of two threaded eye bolts , one screwed into each end of a small metal frame, one with a conventional right-hand thread and the other with a left-hand thread.

  5. Tank steering systems - Wikipedia

    en.wikipedia.org/wiki/Tank_steering_systems

    The system is fully regenerative: all of the engine's power reaches the track either through the main driveshaft or the steering system; none of the energy is being lost to brakes or clutches. Additionally, since power is fed around the transmission to the steering system, in some designs the tank can be turned or even pivoted in place even ...

  6. Tensioner - Wikipedia

    en.wikipedia.org/wiki/Tensioner

    Chain tensioner on a single-speed bicycle Belt tensioner on a belt-drive bicycle Hydraulic bolt tensioner Hydraulic Puller-tensioner . A tensioner is a device that applies a force to create or maintain tension. The force may be applied parallel to, as in the case of a hydraulic bolt tensioner, or perpendicular to, as in the case of a spring ...

  7. Taut-line hitch - Wikipedia

    en.wikipedia.org/wiki/Taut-line_hitch

    Dress by snugging the hitch firmly around the standing part. Load slowly and adjust as necessary. This is the form most commonly used for aircraft tie-down. One taut-line hitch is tied 15–30 cm from the aircraft and adjusted for tension, then a second taut-line hitch is tied 5–20 cm further from the aircraft and finished with a half-hitch.

  8. Horstmann suspension - Wikipedia

    en.wikipedia.org/wiki/Horstmann_suspension

    The principal design feature is that two or more wheels are mounted to a common framework to form a bogie.In the original two-wheel version, the wheels are mounted on an L-shaped swing arm that forms a bell crank, so the upward movement of the wheel is turned into sideways motion of the top of the crank.

  9. Bombardier Bombi - Wikipedia

    en.wikipedia.org/wiki/Bombardier_Bombi

    The Bombardier Bombi or BR 100 is a small dual tracked vehicle which is used for grooming ski and snowmobile trails. Its weight is around 900 kg. it measures approximately 2.7(9 ft) x 1.8 meters (6 ft).