I love Chainsaws....BIG Vintage Saws from the 70's!!!! I've got a Homelite Super Wiz 70....95 CC/7.7 Horse engine...Gear Drive pulling a 1/2" pitch Chain. A McCullough G-70 72 CC Engine....gear drive pulling a 1/2" pitch chain. And a Pioneer P51 77 CC direct drive pulling a .404 pitch chain. All are running bow bars....Homie has a 30" Bar as well. They will still eat some wood UP!!!! Old saws I picked up and repaired from some Old Pulpwood Dudes....