NDtreehugger
ArboristSite Guru
This is not my advise but 1 I found on the web
Engine size, or displacement is a rough measure of what the power of a saw will be. Displacement is measured in either cubic inches CI or CID and cubic centimeters or CCs. CCs it the most common method of measuring displacement today and you can use an online calculator to convert CI to CC if you need to in comparing saws. There are numerous other factors that determine the power output of a saw but I won’t go into those here. The table below is a guide that I’ve personally developed from experience:
Up to 30cc is adequate to run up to a 14″ bar
30-50cc is adequate to run up to a 16″ bar
50-65cc is adequate to run up to a 18″ bar
(I would be hesitant to recommend a saw larger than 65cc to a first time user)
65-80cc is adequate to run up to a 20″ bar
80-90cc is adequate to run up to a 24ö bar
90cc+ You’d better know what you’re doing and what types of bar you run if you get into a saw this large
Engine size, or displacement is a rough measure of what the power of a saw will be. Displacement is measured in either cubic inches CI or CID and cubic centimeters or CCs. CCs it the most common method of measuring displacement today and you can use an online calculator to convert CI to CC if you need to in comparing saws. There are numerous other factors that determine the power output of a saw but I won’t go into those here. The table below is a guide that I’ve personally developed from experience:
Up to 30cc is adequate to run up to a 14″ bar
30-50cc is adequate to run up to a 16″ bar
50-65cc is adequate to run up to a 18″ bar
(I would be hesitant to recommend a saw larger than 65cc to a first time user)
65-80cc is adequate to run up to a 20″ bar
80-90cc is adequate to run up to a 24ö bar
90cc+ You’d better know what you’re doing and what types of bar you run if you get into a saw this large