I'm working on a power hammer in my head. I'm planning a Rusty style helve hammer. Final size to be determined by how big of an anvil I end up with, and how big of set of springs I can scrounge. I'm going to use a tire clutch rather than belts and pulleys. I'm still stuck on whether to use the tire hub as the flywheel/eccentric, like on a tire hammer, vs. using the tire as the clutch only and having a separate flywheel/eccentric on the other end of the shaft. Anybody have any ideas on which would be better? I'd love to see pictures of that part of your hammer, if you've got one.