Nutball
TreeHouser
I've always wondered at what rpm chainsaws cut. I always assumed around 6000-8000rpm, not a bad guess. I watched some old videos I have of my saws cutting, and listened to them while trying to match the frequency with a saw tooth tone generator on my phone. Just for fun, here's what I found:
Echo 271t: Max power ~10,600, Optimal cut speed in 4-8" wood 9250, max torque (before loss of power and stalling) 8100-8300.
Chinese husqvarna 365's
newer, stronger, with new aggressive chain: Optimal cut speed 7000, max torque 6250. (This saw may have still been tuned too rich, I know one I had was)
older, weaker design with old chain: Max power 9250, optimal cut speed 8500, max torque 6800.
Husqvarna 390 with 20" bar, 19" cut depth in 10" and 25" logs: Max power 9750-10,650, optimal cut speed 8500-9500, max torque 7800-8300.
All saws tested in solid hickory or oak.
Echo 271t: Max power ~10,600, Optimal cut speed in 4-8" wood 9250, max torque (before loss of power and stalling) 8100-8300.
Chinese husqvarna 365's
newer, stronger, with new aggressive chain: Optimal cut speed 7000, max torque 6250. (This saw may have still been tuned too rich, I know one I had was)
older, weaker design with old chain: Max power 9250, optimal cut speed 8500, max torque 6800.
Husqvarna 390 with 20" bar, 19" cut depth in 10" and 25" logs: Max power 9750-10,650, optimal cut speed 8500-9500, max torque 7800-8300.
All saws tested in solid hickory or oak.