The size of a tree that a 20-inch chainsaw can cut depends on several factors, including the chainsaw’s power (measured in cc or cubic centimeters for gas-powered models), the skill of the operator, and the condition and type of wood. As a general rule, a 20-inch chainsaw is capable of cutting a tree with a diameter significantly larger than the length of the chainsaw bar through a technique known as “cutting from both sides.”
Basic Calculation
A chainsaw with a 20-inch bar can directly cut through a tree of up to 20 inches in diameter in a single pass. For larger trees, the operator can use techniques such as the plunge cut or making cuts from opposite sides of the tree to effectively fell trees with diameters twice the length of the chainsaw bar or more.
Factors to Consider
- Chainsaw Power – More powerful chainsaws can handle larger trees and tougher wood more efficiently.
- Operator Skill – Experienced operators can fell larger trees safely and efficiently by using advanced cutting techniques.
- Wood Type – Hardwoods (like oak or maple) require more power and effort to cut than softwoods (like pine or spruce).
- Safety – Felling large trees involves significant risk, and safety precautions are necessary. It’s important to have the right protective gear and understand tree-felling techniques thoroughly.
Advanced Techniques
For trees with diameters greater than the chainsaw bar, an operator might:
- Make a face cut on the side of the tree facing the direction it’s intended to fall.
- Perform a back cut from the opposite side to meet the inner point of the face cut.
- Use wedges or a felling lever to ensure the tree falls in the desired direction.
Conclusion
While a 20-inch chainsaw is quite versatile and capable of handling large trees, the actual limit on the size of the tree it can cut depends on the circumstances mentioned above. For very large or complex tree felling operations, it’s often best to consult with or hire a professional arborist or logger, especially when dealing with trees significantly larger than 20 inches in diameter, to ensure the work is done safely and effectively.
