here is a followup, this head is a piece of junk, no matter how I straighten it after just spinning it deforms, last set of blades curled.
what I am doing is machining a hub to fit the shaft, then plan on plasma cutting a disc to mount new blades onto, at least a disc will not hammer any debris and should remain flat and not bend, what I need to know on other mowers of this type how thick is the disc? was thinking 3/8, where the blades mount with a 1 inch bolt thickening it up to 3/8 plus a 1/2 boss, boss on the underside, I could make these mountings at 60 degrees allowing relocation of the blades should the hub deform
thaughts?