An R-clip, also known as an R-pin, R-key, hairpin cotter pin,. hairpin cotter,. bridge pin, hitch pin. or spring cotter pin,.
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A further use of the term "cotter pin" is the "crank cotter pin" used to lock bicycle pedal cranks to the bottom bracket axle. These are not "split" at all and are wedge shaped.
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Both castellated and slotted nuts are designed to use a pin (usually a cotter pin) that fits through the slots and through a hole in the screw to which the nut is attached. This pin prevents the nut from turning and loosening. Compared with slotted nuts, castellated nuts allow the cotter pin to be confined closer to the margins of the nut itself, providing added secureness. The bolt has one or two holes drilled through its threaded end.
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Cross-section of a connecting rod, showing strap (S), gib (G), and cotter pin (C) Another view, with scale, of bicycle crank cotter A cotter is a pin or wedge passing through a hole to fix parts tightly together. In British usage cotter pin has the same meaning,. but in the U.S. it refers to a split pin. Typical applications are in fixing a crank to its crankshaft, as in a bicycle, or a piston rod to a crosshead, as in a steam engine.
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One of the earliest standards of crank interface, cottered cranks are now considered obsolete in Western countries, but are still in common use in China, India and other developing nations. The spindle is a cylinder and has a flat region across it (a land). The crank has a hole through it to fit onto the spindle, with a transverse hole for the cotter pin. The cotter pin is cylindrical with one side flattened at an angle to form a wedge to match the spindle land.
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When tightened, this produces a simple and effective interface. The problem is that normally the interface cannot be tightened enough without a cotter press, a highly specialized tool, though still produced and for sale. Cotters can also be installed with an improvised tool designed for another purpose, such as a ball joint splitter or hammer, with mixed results. Because all the load is on one very small area of the cotter pin and the crank land the cotter pin deforms plastically under normal use and so must be replaced regularly.
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Investigation into Queen of Oak Bay Incident Continues. Press Release. On July 7, 2005, BC Ferries concluded that a missing cotter pin was to blame. The pin normally retained a nut on a linkage between an engine speed governor and the fuel control for one of the engines.
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The lock may be further secured with a cotter pin. Other styles of connection are also used, with the joint secured by clamps or bolts (usually three, occasionally two). The breastplate rests on the divers shoulders over the top of the suit, and over an optional padded breastplate cushion worn under the suit for comfort.
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One flattens the end of a strut and drills bolt holes at the needed length. A single bolt secures a vertex of struts. The nuts are usually set with removable locking compound, or if the dome is portable, have a castellated nut with a cotter pin. This is the standard way to construct domes for jungle gyms.
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Spencer claimed in his autobiography to have invented a "binding- pin" that was distributed by Ackermann & Company, and he shows a drawing of the pin in his Appendix I (following Appendix H). This pin looked more like a modern cotter pin than a modern paper clip, but it was designed to hold sheets of paper together. It is approximately 15 cm unfolded.
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Credo Reference. Web. 1 October 2012. In the military, lanyards were used to fire an artillery piece or arm the fuze mechanism on an air-dropped bomb by pulling out a cotter pin (thereby starting the arming delay) when it leaves the aircraft. They are also used to attach a pistol to a body so that it can be dropped without being lost.
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The nut is torqued properly and then, if the slot is not aligned with the hole in the fastener, the nut is rotated forward to the nearest slot. The nut is then secured with a split pin/cotter pin, R-clip or safety wire. It is a positive locking device. Castellated nuts are used in low-torque applications, such as holding a wheel bearing in place.
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A moused shackle There are two main types of clevis pins: threaded and unthreaded. Unthreaded clevis pins have a domed head at one end and a cross-hole at the other end. A cotter pin (USA usage) or split pin is used to keep the clevis pin in place. Threaded clevis pins have a partially threaded shank on one end and a formed head on the other.
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Green, Kristen, and Steele, Jeanette, "Reservists on training mission; one injured", 22 July 2004, The San Diego Union-Tribune, San Diego, California. ;15 August:A US Marine Corps CH-53D Sea Stallion lost tail rotor authority on approach to MCAS Futenma on the island of Okinawa. This was due to improper maintenance. The failure to install a cotter pin resulted in vibrations forcing loose a bolt, thus causing separation of the tail boom from the aircraft.
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Without the pin, the nut fell off and the linkage separated, causing the engine, clutches, and propellers to increase in speed until overspeed safety devices tripped and shut down the entire propulsion system. The faulty speed governor had been serviced 17 days before the incident during a $35-million upgrade and the cotter pin was not properly replaced at that time.BC Ferries Corporation (July 7, 2005). Preliminary Investigation into Queen of Oak Bay Incident Released.
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Castellated nut A car hub, with the central nut hidden behind a castellated nut cover that is locked against rotation using a cotter pin. The effect is similar to using a castellated nut. A castellated nut, sometimes referred to as a castle nut, is a nut with slots (notches) cut into one end.. The name comes from the nut’s resemblance to the crenellated parapet of a medieval castle. Castellated nuts are sometimes referred to incorrectly as castigated nuts.
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To stabilize the weapon after release from the aircraft, a tail cone assembly is attached to the aft end of the cargo section. The tail cone assembly houses four, spring-actuated folding fins. The fins are spring-loaded to the open position and secured in the closed position during ground handling by a fin release-band assembly. The fin release band is secured in the closed position by a safety cotter pin and by the fin release wire.
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The locomotives were fitted with the single slide-bar type piston crossheads, popular in Europe but prone to rapid wear under South African conditions. The valve spindle crossheads were screwed to the ends of the valve spindles and secured with locknuts. Although this made adjustment easier, it was not satisfactory in service and was later replaced by the usual taper fit with cotter pin. With these two exceptions, the mechanical parts of the Class 19 gave very little trouble.
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For the larger peaked cap versions, the crown was again attached at one point and attached to the back copper plate. All officers' cap and collar insignia were initially backed in black felt. Cap badges were fastened with double loops which were held in place with a cotter pin. Officers' models for the peaked cap used a brass metal support strip under the crown wire to strengthen the badge and to keep it flush against the cap.
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Chicken eyeglasses were often made from celluloid or aluminum and typically consisted of "two oval panels that fit over the upper beak of the chicken. A pin is put through the nostril to-hold the oval pieces in place." Different designs were produced that attached to the chicken's head in different ways. Some were held in place by a strap, some by small hooks into the nares (nostrils) and some by piercing the bone septum between the nostrils with a cotter pin.
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Without the pin, the nut fell off and the linkage separated, causing the engine, clutches, and propellers to increase in speed until overspeed safety devices activated and shut down the entire propulsion system. The faulty speed governor had been serviced 17 days before the incident during a $35-million upgrade, and the cotter pin had not been properly replaced at that time. Queen of Oak Bay was quickly repaired and tested at sea trials. She returned to regular service on July 8.
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Toxicology reports conclusively ruled out toxic gases, alcohol, and drugs as possible cause for the crash. Milton Helpern, Chief Medical Examiner, decided that having relatives attempt visual identification of the crash victims was inhumane and ordered dental and fingerprint comparisons. In early July, the CAB announced their investigators believed that a cotter pin and a bolt missing from the rudder mechanism might have caused Flight 1's crash. Though considered to be a "mechanic's oversight", the CAB nevertheless wired all 707 operators to inform them of the potential danger of the assembly.
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The pin itself may be as simple as a metal rod inserted into a channel drilled through two moving parts, locking them in place as long as the pin is intact. It may also be a plain metal rod inserted through a hub and axle; the diameter of the rod, alloy and tempering of the metal, are all carefully chosen to allow the pin to shear only when the predetermined threshold force or shock is reached. A split pin (cotter pin in American usage) can also be used as a shear pin.
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In the locomotive's cab, the boy discovers that the girl has been made to supervise driving the train while the engineers Steamer and Smokey replace the headlight. The boy applies the brakes and the train stops coming across a herd of caribou blocking the tracks. The conductor pulls Smokey's beard, causing him to let out animal-like noises, and the caribou herd clears the tracks. The train continues on at extreme speed, and the throttle's split pin (cotter pin) shears off, causing the train to accelerate uncontrollably down a 179-degree grade and onto a frozen lake.
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On July 1, 2005, BC Ferries issued a statement that Transport Canada, the Transportation Safety Board, and Lloyd's Register of Shipping were reviewing the control and mechanical systems on board to find a fault. An inspection revealed minimal damage to the ship, with only some minor damage to a metal fender, paint scrapes to the rudder, and some minor scrapes to one blade of a propeller. On July 7, BC Ferries concluded that a missing cotter pin was to blame. The pin normally retained a nut on a linkage between an engine speed governor and the fuel control for one of the engines.
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A moused shackle Mousing (pronounced ) is the application of a molly or safety wire, called mousing wire in this use, to secure a threaded clevis pin to a shackle. This is done by passing a couple of turns of mousing wire through the reach-hole provided for this purpose in the unthreaded end of the clevis pin and around the body of the shackle's hoop. Alternatively, some threaded shackles are provided with a hole through the threaded end of the pin beyond where it emerges from the threaded hole. A cotter pin or a couple of loops of mousing wire through this hole serves the same purpose and secures the shackle in a closed position.
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An accident investigation determined that the crash was caused when the aircraft's rudder operating mechanism disconnected the flight controls from the rudder actuators and caused the rudder to deflect 30° to the left. This induced an uncontrollable yaw and a resulting roll, causing the aircraft to depart controlled flight, a condition that is unrecoverable in the T-38. The report stated that contributing factors to the crash were a structural fatigue failure or structural break in a critical component or bolt, and a maintenance error in which a nut or cotter pin did not properly secure a bolt connecting two critical components. Citing two historical cases of rudder failure, the report concluded that maintenance error was the more likely cause.
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A Honda VFR750R (RC30) racing on the Isle of Man in 1992 The RC30 front suspension was made by Showa and had wheel and brake pads that had quick-release mountings. The rear wheel carried a brake disc to the inside and a chain sprocket to the outside of a single-sided swingarm (originally patented by ELF of France), and attached with a single castellated nut and cotter pin. It was also equipped with fully adjustable Showa suspension which, as it only had a single seat thus focusing suspension performance, gave superior ride and handling characteristics. The engine and low storage position of the fuel in the fuel tank combined to give a low centre of gravity which aided its handling prowess.
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The second turn never occurred. When the ship did not respond as expected the helmsman advised the captain that Sea Witch was no longer responding to steering inputs, Captain Paterson quickly ordered steering control transferred from the port side steering system to the starboard system, while Cahill ordered the rudder put hard over to port. Both the captain's and the pilot′s attempts to regain control of Sea Witch proved futile, as both the port and starboard steering systems were connected into a single mechanism atop the vessels rudder post by a faulty "key," a device similar to a cotter pin, which had failed. Without this small fastener in place all steering control of Sea Witch was lost, and with the ship rapidly moving out of the channel toward Staten Island Cahill ordered the engines to full astern, began sounding a series of short rapid blasts on the ship's whistle, and asked Captain Paterson to sound the general alarm to alert the ship′s crew.
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