Gudgeon pins are circular fittings used to attach devices while allowing some range of motion. They function similarly to bearings and are commonly used on sailboats to allow the rudder to rotate with ease. They can also be used in water wheels and wind chimes. They can be made of metal or hard plastic molds.
Gudgeon pins are simple, usually circular, fittings that are applied to some sort of surface. Normally, a goby is made up of metal and allows you to attach another device to the device while still allowing some range of motion. This allows the circular fitting to perform much of the same function as a bearing, although the device is used in situations where a bearing would not work.
The most common application of a goby is on a sailboat. Together with a hinge, the fitting is employed to allow a boat’s rudder to rotate with relative ease, making steering the boat much easier. In many designs, the hinge, which is simply a pin that is inserted into the hole in the gudgeon pin, establishes the connection between the body of the boat while still allowing the rudder to move as needed.
A circular fitting used on some types of seagoing vessels may be referred to as a rudder or stern stud. Determining which designation to use depends on where the fitting is actually attached, at the rudder or the body of the vessel known as the transom. Both names describe where the device is attached to the boat’s structure and give an idea of the function. Most designs call for the use of more than one kingpin and kingpin on any given rudder. Typically, some type of weight is placed on one end of the pin to prevent it from slipping out of the fitting once it is in place.
The plug can also be used in other applications. It has to do with water wheels on pedal boats. Here, the function is very similar to that of a steering wheel pin, in that the pins are used to keep the wheel in proper alignment, without inhibiting the free movement of the wheel as water falls on the wheel. The circular fitting design of the device makes it relatively easy to fix in place and also to replace as and when needed.
While the plug is normally constructed using a type of metal that stands up well to a lot of wear and tear, the device can also be constructed from hard plastic molds. Round fittings of this type are not used in situations such as attaching rudders to boats or other situations where wear and tear is constant. Plastic fittings like this are more likely to be used in devices that see less wear and tear, such as a wind chime swivel, which allows the chimes to turn whenever a strong wind arrives.
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