timberwolf
Addicted to ArboristSite
I think you see single rings less in bigger saws due to lower RPM. Sort of general rule of thumb is that rings do little of the actuall sealing at over 8000 RPM. It's at speeds below 8,000 the sealing of the extra ring really shows up.
I have a few big race saw pistons though with single rings, but for that application were working in the cut well over 8,000.
Second ring also helps some with cooling getting the heat out of the piston to the cylinder wall.
I have a few big race saw pistons though with single rings, but for that application were working in the cut well over 8,000.
Second ring also helps some with cooling getting the heat out of the piston to the cylinder wall.