Don't have the camera hookup for this computer, but I'll post the pics later
From tip of teeth to tip of teeth, the diameter is 12" without the teeth, the diameter is 11"
Mounting bolt hole to mounting bolt hole is the same as your pics, roughly 3"
Thickness of the entire flyhweel is 1-7/8"
Thickness @ the mounting holes is a little less than 1"
Like I said, I'll get the pics up later tonight, don't have the hook up on this computer