A chainsaw is similar to an ordinary saw with the exception of the addition of a power source, such as electricity, hydraulic power, compressed air, two-stroke engine, et cetera. The most common power source used on this type of portable, mechanical saw is the two-stroke engine. Chainsaws are used in a wide array of applications, including bucking, felling, pruning, and limbing trees; cultivating firewood; and carving chainsaw art. For chainsaw art, specially designed bar and chain combinations are employed. Concrete carving is also possible with the use of specialised chainsaws.
This guide covers comprehensive information about chainsaws, including their construction, maintenance, usage techniques, safety features, and storage instructions. Chainsaws of different brands, price ranges, and usages are available at several online outlets and brick and mortar stores. eBay boasts a wide variety of chainsaws for different purposes.
Construction of a Chainsaw
A chainsaw is mainly constructed of the engine, drive mechanism, guide bar, and cutting chain. Careful maintenance of each of these components is important.
Compressed air, hydraulic power, and electricity are all used to power chainsaws, but the most common way to power a chainsaw is a two-stroke, petrol internal combustion engine with a typical cylinder volume of 30 to 120 cubic centimetres.
Centrifugal clutch and sprocket are typically used as the driving mechanism. The advantage of deploying centrifugal clutch is that no control mechanism is needed, and it prevents the chain from moving while the saw is idling.
A guide bar is an elongated bar that has a wear-resistant, round end. It is usually around 40.64 to 91.44 centimetres in length. An edge slot typically guides the cutting chain. Loop-style or bow bars, which were once used for bucking logs and clearing bush, have now been abandoned due to increased levels of risk.
The cutting chain, or saw chain, is the key part of any chainsaw. Rivets hold the steel links together, and it resembles the roller chain and leaf chain in many ways, but it has extremely sharp cutting teeth on the outside of the chain loop. Drive links on the inside are also flat, unlike other chains. This helps hold the chain on the bar and facilitates the propulsion of the power source. It is important to note that the chain should match properly with the guide bar and the saw. Manufacturers usually recommend a specific set be used with a particular model of saw for optimum results.
Cutting chain has evolved with time, and there is a significant difference between early chains and modern chains. Modern chains are far more reliable and safer to use than old chains. In high-speed, high-power sawing applications, modern chains outperform their ancestors by a huge margin.
Maintenance of a Chainsaw
A chainsaw driven by a two-stroke petrol motor requires 2 to 5 per cent oil in the fuel for lubrication purposes, while the motor does not have to be lubricated for electrical saws.
Chain Oil or Bar Oil
For the lubrication of the guide bar and chain, separate oil is used. Unlike the normal oil used for lubricating a motor, chain oil depletes quickly because the sawdust absorbs a portion of the oil, and the centrifugal force acting on the saw tends to throw tiny bits of oil away from the blade.
Using an alternative oil of different viscosity leads to several problems that can damage chainsaws, including the seizing up of the chain. Motor oil is sometimes used in emergency situations by operators, and this can work temporarily, but it leaves the chain under-lubricated if it is used quite often. Therefore, motor oil is not recommended by vendors for long-term use.
Chainsaw training provides a basic level of technical knowledge and enlightens users about the safety measures that have to be taken in order to operate a chainsaw without any serious hazards.
Cutting the branches off a log or tree is called limbing. In order to avoid a kickback, the operator should properly reach the log cut.
In order for a tree to fall safely, the process of felling should be carried out professionally in order to make sure the tree does not fall on another tree or some other obstacle. Felling also helps with the limbing and cross cutting of logs. Several factors that should be kept in mind while felling include tree damage, obstacles, bend, branches, lean, wind, and snow load.
Felling is carried out in three main cuts once the path is cleared. In order to form a wedge in the directional cut line to control the fall, the top and bottom cuts should be at 45 degrees to each other. On the opposite side of the wedge, a horizontal felling cut should be made slightly above the bottom cut which ensures that the tree falls in the desired direction. A wedge can be placed in the felling cut to prevent any kind of sitback.
The process of cutting the logs in a cross-sectional direction is called bucking. A log may have changing compressions and tensions, and binding the chainsaw can be avoided with a proper set up. Special cutting techniques may also help prevent binds. Wedges, bars, winches, and lifts are helpful in some cases, as well.
Binds occur when a chainsaw gets stuck in the compression of a log and is hard to remove. Extreme care should be taken in order to avoid equipment damage and physical injury.
The quick removal or clearance of small trees and branches that are typically less than 12.7 centimetres in diameter is called slashing. A hand piler may be used afterwards to remove debris.
How to Store a Chainsaw
Once a user is done with a chainsaw for the season, it has to be cleaned and safely stored. Extreme care should be taken when storing a chainsaw, as it can corrode and the lubricants can become sticky or gummy. The following steps outline the proper storage process for a chainsaw:
For electric chainsaws, spark plug wires should be disconnected from sockets to avoid accidents while cleaning. User manuals usually provide diagrams and instructions for disconnecting spark plugs.
- A clean rag can be used to clean any dust from the surface of the chainsaw.
- A different rag or towel soaked in water can be used to wipe down the entire surface of the chainsaw, including the chain and the bar, until everything is visibly clean.
- A cloth soaked in kerosene oil can be used to rub off any stubborn stains.
- A fresh application of bar and chain oil should be applied and the chainsaw should be briefly turned on so the fresh oil can spread throughout the chain and bar area.
- Once the chainsaw has cooled back down, it should be wrapped in packaging paper. If one side of the paper is waterproof, that side should be placed on the outside.
- The chainsaw should then be stored in a dry, secure location outside of the reach of children until it needs to be retrieved.
If the chain has dirt that is hard to reach, users can use an old toothbrush to reach the cracks. Chainsaws should not be stored in airtight containers because it traps the moisture inside, and that can cause chainsaws to corrode.
Safety Features of a Chainsaw
Chainsaws are typically equipped with several safety features, such as scabbards, anti-vibration systems, centrifugal clutches, safety throttles, and chain catchers. The use of all safety features is obviously the recommended practice.
Chainsaw safety clothing is also recommended by professionals, and there is a general consensus worldwide on what is ‘suitable’ clothing. Gloves, boots, trousers, helmets, and visors are some of the commonly used and recommended accessories.
Finding a Chainsaw on eBay
Enter your desired search term in the search bar on the eBay homepage (e.g., "chainsaw"), and the different varieties of chainsaws available on the site are displayed in a comprehensive list. You can narrow down the search results according to a particular brand, price range, condition, buying format, et cetera, by selecting the filters on the results page. Entering a location and postcode may help you find items that are nearby that are available for local pickup, which enables you to avoid delivery charges.
To find specific types of chainsaws, such as chainsaws with a particular power source, simply add the additional terms to your search, such as "petrol chainsaw" or "electric chainsaw". Comfort and safety may be important considerations, so you might want to search for things like "anti vibration chainsaw", "automatic chain oiler", or "chainsaw case". Operators sometimes require protective clothing when using a chainsaw, so searching for protective items like "chainsaw leg protection" or "chainsaw hard hat" may be important.
Chainsaws are different from ordinary saws because they feature a power source connection. The two-stroke petrol engine is the most commonly used power source. Chainsaws are used in a wide array of applications. They are generally constructed with an engine, drive mechanism, guide bar, and a cutting chain.
A chainsaw driven by a two-stroke petrol motor requires 2 to 5 per cent oil in the fuel for lubrication purposes, while the motor does not require lubrication in electric saws. Chain oil or bar oil is used for the lubrication of the guide bar and chain.
Usage techniques for chainsaws include limbing, felling, bucking, and slashing. Care should be taken when storing a chainsaw in the off-season to avoid rust accumulation. The use of safety features, such as a scabbard, anti-vibration system, centrifugal clutch, safety throttle, and chain catcher, is highly recommended. Chainsaw safety clothing is also recommended to protect users. eBay boasts a huge variety of chainsaws, accessories, and safety clothing.