Cool link Ammo. That thing is awesome. They using a motorcycle engine to power it? It has a good cutoff switch. Stopped instantly.
Chainsaws are dangerous from backlash if they sieze up. The result is unpredictable and instant. I think I got hit in the head with a small chainsaw one time, while clearing some limbs away in my back yard. I cut through a 3" limb under stress, and that sucker came up and hit me in the nose like a baseball bat. I was unconscious for a couple seconds, and when I came to...there was the saw idling along on the ground next to me. Was afraid to feel my face, for fear the chainsaw had got me. It was the limb and not the saw, thank God!!! But it knocked me down so fast, it might as well have been a bullet. I'll be careful from now on with chain saws.
Les