The chain force trend lines are largely parallel, with Chain A exhibiting the lowest peak chain force of 100 N and Chain C having the highest peak chain force of 122 N. Again, feed force had the largest differences between chains with peak values of 88, 128, 145, and 100 N for Chains A-D, respectively. In cutting efficiency, Chain A was the best performer with a peak of 1.96 mm2/J, while Chain C had the lowest efficiency with a peak of 1.61 mm2/ J. Overall, Figure 8 clearly shows that the Chain A had the lowest cutting forces as well as the highest efficiency in the boring cutting mode. In the boring cutting mode, the performance differences between chains can be clearly seen from the feed force in Figure 8(g). The best-toworst ranking in terms of boring feed force is Chain A-DB-C. Another interesting result from the experiment comes from comparing Chain C and Chain D. The only feature separating these chains is a slight difference in the bumper drive link shape.
Step 5: If you are using your saw for felling or crosscutting, boring the chainsaw bar into the trunk may be the best way to cut. Step 7: Pay attention to the nose of your chainsaw bar and how it is positioned. Step 9: Use narrow-nose bars, such as Oregon Double Guard bars, to ensure maximum kickback safety.
I don’t recall ever seeing a chain get “Gummed” up from softwood to the point I would have to stop and clean the chain, again only used Low Kickback chains. The primary reason for low kickback chain is just what it says, low kickback, i.e. safety. Typically a low kickback chain is also a semi chisel chain, meaning that the outside edge and working corner are rounded versus the squared corner of a chisel chain.
As noted above, you may notice a bigger difference between different brands of chains, between full-chisel and semi-chisel chains, or by adjusting your sharpening angles. “Due to the reduced kickback bumpers, low kickback chain may not carry / clear wood chips as well on longer bars *if the bars are fully buried in the wood*. Not an issue if you are cutting a 12″ log with a 24” bar because the chips do not build up. Because kickback is usually associated with the upper portion of the bar tip, low kickback chains are specifically designed to not bite deeply there, so these bars and chains do not bore cut as well – they can be used for occasional bore cuts, or not an issue if you don’t bore cut.
what is low kickback chainsaw chain Related Question:
How can you tell if you have a low kickback chain?
The thicker the chip, the more severe the potential kickback. To minimize the possibility of reactive forces, kickback-reducing features on chains limit the amount of fiber that can be hooked by the working corner as it rounds the upper half of the bar tip, which is commonly referred to as the kickback zone.
What is a kickback chain?
Kickback is a term used to describe the sudden, upward motion of a chain saw’s guide bar and is one of the most common causes of chain saw accidents. If proper cutting techniques are not followed, the lightning-fast kickback of a chain saw can be very dangerous and may result in serious injury. Topics.
Why use a low profile chainsaw chain?
Low Profile Chainsaw Chain The advantage of using low profile chain is that it weighs less than standard chain, which makes it a good fit for low-horsepower saws and electric saws. The lighter weight of the chain places less strain on the engine. Low profile chain is generally available in a 3/8” pitch and a .
What is the most common chainsaw injury?
The most common hazards associated with chainsaws are injuries caused by kickback, pushback, and pull-in. Kickback is the most common and poses the greatest hazard. Kickback occurs when the rotating chain is stopped suddenly by contact with a more solid area throwing the saw rapidly backward toward the operator.
What makes a chainsaw chain more aggressive?
An aggressive chainsaw chain is one that has a higher cutting speed than other chains, and usually has full chisel teeth on a full or skip chain. Experts say the chainsaw brand that makes the best aggressive chains is Stihl, with Husqvarna and Oregon a close second.
What’s the best angle to sharpen a chainsaw chain?
Always file at right angles to the guide rail. The right sharpening angle depends on the saw chain and the wood that you want to cut. The sharpening angle will generally be between 25° and 35° – the harder the wood, the greater the angle.
Why is my chainsaw hard to pull and kicks back?
If your chainsaw is hard to pull, here are some common causes: The pully system is snagged or stuck. The starter assembly is stuck or sticky. The housing may be damaged.
What is the fastest cutting chainsaw chain?
A full chisel chain is a chain with square cornered teeth, and they’re known for being the fastest cutting blade shape available.
What is the difference between R56 and S56 chainsaw chain?
The difference is the width of the chain track. S56 is . 050″ and R56 is . 043″.
What are metal bucking spikes on a chainsaw?
Bumper Spikes: This series of sharp metal spikes protruding from the saw near the base of the bar provide leverage for easier, more controlled sawing. Jab the spikes into the log, then pivot the bar downward to guide the chain through the cut.
What causes a kickback?
The two main causes of injury from kickback is trauma from the wood striking the head, chest, or torso of the woodworker, or the wood moving so quickly that an operator doesn’t have time to take their hand off of it and it gets pulled across the saw blade.
What’s the safest chainsaw?
Chainsaws are useful when doing work on your home, but they can feel dangerous to use. It’s not too bad if you know what you’re doing, but it’s so easy to make one wrong move—and then it’s game over.
How common are chainsaw accidents?
They can also quickly cause severe injury or death. According to the Centers for Disease Control and Prevention (CDC), approximately 36,000 people are injured by chainsaws annually. Medical costs for chainsaw injuries based on these facts amount to about 350 million dollars per year.
Can you drill holes in chainsaw bar?
Re: Drilling a Chainsaw Bar Drilling that bar may not be as difficult as you think. It will be best if you use a drill press, start with a pilot hole, and then drill to the size you need. Make sure you have a sharp bit, run at the lowest speed you can, and use cutting fluid.
What chainsaws do loggers use?
The most popular brands known to fit this description are the Stihl, Husqvarna, and Oregon chainsaws, which are the most ideal for professional loggers. Bigger chainsaws are better for professional loggers, but they are not always the most ideal. The fact that these chainsaws are big also means that they are heavier.