stihl_lyfe
ArboristSite Lurker
Hey folks, been running a couple of different bar and chain setups for the slabs I've been cutting with the 660. 1x 32" sugi hara with 3/8" E&S skip chain (10deg) that runs and cuts like a dream, the other a 42" sugi hara with .404 Oregon skip (10deg) that has been workable but a chore to run by comparison. Obviously the bigger bar and chain take a lot more to drive but not convinced power is the issue, as despite trying a range of tensions on the 42" the chain on the trailing side always wants to lift and jump out of the bar groove mid bar when the RPMs come up. This means I can never really run the 660 in its powerband with that combo - again it has the power to do it but the chain starts jumping at the same speed that the 3/8" setup is just getting started.
Anyway, thinking I will ditch the .404 setup and put a 3/8 sprocket on the long bar, but interested to know what is not going right here. Slabs so far have mostly been macrocarpa (softwood cypress), pic for your viewing pleasure
Anyway, thinking I will ditch the .404 setup and put a 3/8 sprocket on the long bar, but interested to know what is not going right here. Slabs so far have mostly been macrocarpa (softwood cypress), pic for your viewing pleasure